Forum Diagram: September 2014

Sunday, September 21, 2014

Fuse Box BMW E34 540i Diagram

Fuse Box BMW E34 540i Diagram - Here are new post for Fuse Box BMW E34 540i Diagram.

Fuse Box BMW E34 540i Diagram

Fuse

Fuse

Fuse Panel Layout Diagram Parts: roller sun blind, servo tronic, shifting gate illumination, speed control, heated washer jets, heater, heater blower, horn, immobilizer, independent heater, instrument cluster, light module, multi function steering wheel, multi information display, windscreen washer system, windscreen wiper, diagnosis plug, driver seat adjustment, electric seat heating, engine control, fuel pump, steering column adjustment, telephone, thermal sensor, tyre pressure control system, window lift, airbag, anti glare inside mirror, automatic stability control, auxiliary fan, brake light, central locking system, charging socket, courtesy mirror illumination, on board monitor, outside mirror adjustment, garage door opener, headlight cleaning system, heated rear window, heated steering wheel, ABS diesel, ABS gasoline, air conditioner, park distance control, passenger comp, passenger seat adjustment, radio.

Saturday, September 20, 2014

Portable headphone amplifier circuit

This is an easy built portable headphone amplifier schema. You can use this headphone amplifier to amplify your radio receiver, mp3/mp4 player, computer or dvd/cd player. You may connected the input channel directly to those devices.

Portable


R1 _______________ 10K
R2 _______________ 100K
R3 _______________ 68K (see notes)
R4 _______________ 1K5
R5 _______________ 3K3
R6 _______________ 330R
R7 _______________ 4K7
R8 _______________ 2R2
C1 _______________ 1uF 63V
C2 _______________ 100uF 25V
C3 _______________ 470uF 25V
Q1 _______________ BC239C 25V 100mA NPN High-gain Low-noise Transistor
Q2 _______________ BC337 45V 800mA NPN Transistor
Q3 _______________ BC327 45V 800mA PNP Transistor
J1 _______________ Stereo 3mm. Jack socket
SW1 _______________ SPST Switch
B1 _______________ 3V Battery (2xAAA)

R3 value was calculated for headphone impedance up to 300 Ohms. Using 600 Ohms loads or higher, change R3 value to 100K.
Take a note that above schema only show single channel.

Simple No Fly Zone

Some places and things need full focus and concentration. its in these places where such a toy will become as annoying as a fly circling round the head. thats the explanation why a no fly zone may be terribly helpful in anyplace where silence is needed.

The creation of this zone is achieved by generating a code thats transmitted to the helicopter, so as to prevent it from operating, and consequently flying. because the helicopter is operated via an infra red remote signal, the code can ought to be transmitted within the same method.

A microprocessor sends the firmware on to the transmission unit. The transmission unit consists of 4 infra red LEDs pointing in numerous directions. An infra red signal sensor is connected to every LED. When an infra red signal from the helicopter’s remote is detected, the system triggers the transmission of the jamming code.

The code might not be terribly effective, however the interference created within the transmission is enough for the helicopter to prevent functioning in a very predetermined no fly zone.

Wireless transmitter microphone circuit

Wireless

Wireless FM transmitter circuit Microphone Hi Fi using a model-ready transmitters, this is because the buil-up transmitter module has a transmission capability of a stable and very effective to emit 10 mW RF. so that the target of Hi Fi FM Wireless Microphone transmitter circuit Hi Fi can be realized. The series can be seen from the FM transmitter Microphone Wireless Hi Fi transmitter module is that it stands alone with an additional R7, R8 and C6 to produce high-quality RF frequency.

In the series of FM transmitter Microphone Wireless Hi Fi module requires power consumption of a battery 12 VDC. Transmission antenna is directly connected with the circuit module Wireless FM transmitter Wireless FM Microphone Hi Fi.

Wireless

Input section of the circuit transmitter Wireless FM Microphone Hi Fi signals to the modulation of 100mV RMS. A microphone preamplifier with IC TL081 is used to reproduce the signal from the microphone into a signal with 100mV rms level as needed this wireless FM transmitter module. strengthening the signal from the microphone preamplifier circuit in FM transmitter Microphone Wireless Hi Fiini regulated by P1. R1, R2 and C1 in the range of an FM transmitter Microphone Wireless Hi Fi is used to provide supply to the microphone electred used.

4 × 40 W BTL quad car radio power amplifier

FEATURES:

Requires very few external components

High output power

Low output offset voltage

Fixed gain

Diagnostic facility (distortion, short-circuit and temperature pre-warning)

Good ripple rejection

Mode select switch (operating, mute and standby)

Load dump protection

Short-circuit safe to ground and to VP and across the load

Low power dissipation in any short-circuit condition

Thermally protected

Reverse polarity safe

Electrostatic discharge protection

No switch-on/switch-off plop

Flexible leads

Low thermal resistance

Pin compatible with the TDA8568Q, except for the gain.

GENERAL DESCRIPTION:

The TDA8571J is a integrated class-B output amplifier contained in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in a BTL configuration, each with a gain of 34 dB. The output power is 4 × 40 W (EIAJ) into a 4 Ω load.

APPLICATIONS:

Primarily developed for car radio applications

Circuit Diagram:

4 × 40 W BTL quad car radio power amplifier

Friday, September 19, 2014

Build a Automatic Water Tank Filler Wiring diagram Schematic

This schema has been very useful in filling a header tank for a reticulated water supply on a farm. Eight troughs are supplied in different paddocks where a lack of water would have serious consequences for the stock. In the past, the tank had been filled daily by a time clock which was not successful. During hot weather, the stock would empty the tank on a regular basis and then be without water for several hours or the tank would overflow and flood the area if the weather was wet and the cattle did not drink much.1

Automatic Water Tank Filler Circuit Diagram

Automatic Water Tank Filler Schematic Circuit Diagram

The schema described has been used to maintain the level of water in the header tank within prescribed limits. It controls a 3HP submersible bore pump which has a high starting current, necessitating a solid-state relay sufficient to take the starting load. Two Darlington transistors, Q1 & Q3, in conjunction with Q2 & Q4, are connected to the upper and lower water sensors in the tank. Q2 & Q4 have a common 5.6kO load resistor and function as a NOR gate. The output of the NOR gate drives Q5 which activates relay RLY1.

Initially, when the water level is low, both sensors will be open-schema, the NOR gate output will be high and the relay will be turned on. This causes the normally closed (NC) contacts of the relay to open and disconnect the lower sensor. However, the upper sensor will still be open schema and the NOR gate output will be high, keeping the relay closed. The normally open (NO) contact of the relay will be closed to operate the solid-state relay RLY2 to run the pump.

This state continues until the water reaches the top sensor which will then drop the output from the NOR gate to 0V. The disables relay RLY1 and the pump is stopped. In practice the upper level sensor is just below the overflow from the tank and the lower sensor about half way up the tank. The sensor contacts are simply two stainless steel screws about 25mm apart and screwed through the poly tank walls. The wiring junctions on the side of the tank are protected by neutral-cure silicone sealant.

Fuse Box BMW 1978 82 Euro 630CS 635CS Diagram

Fuse Box BMW 1978-82 Euro 630CS-635CS Diagram - Here are new post for Fuse Box BMW 1978-82 Euro 630CS-635CS Diagram.

Fuse Box BMW 1978-82 Euro 630CS-635CS Diagram

Fuse

Fuse

Fuse Panel Layout Diagram Parts: high beam, low beam, auxiliary fan, turn signal, windshield wiper and washer, intensive cleaner, brake light, cruise control, horn, engine electrical equipment, back up light, instrument cluster, main and auxiliary relay, fuel pump, radio, check control, on board computer, without connection, heater blower, back up relay, outside power mirror, mirror heating, air conditioner, power seat memory, power sliding roof, heated seat, rear window defogger, interior light, radio, glove box, rechargable flashlight, side light, engine compartment light, hazard warning light, open door buzzer, central locking system, door lock heating, burglar alarm system, lighters, power antenna, parked car heater, booster, fog light.

Fuse Box Toyota 1998 Sienna Junction Box Diagram

Fuse Box Toyota 1998 Sienna Junction Box Diagram - Here are new post for Fuse Box Toyota 1998 Sienna Junction Box Diagram.

Fuse Box Toyota 1998 Sienna Junction Box Diagram

Fuse

Fuse Panel Layout Diagram Parts: high current, instrument panel wire, floor wire, roof wire, medium current, noise filter, taillight relay, cowl wire, power relay, defogger relay, integration relay,

Solar Power Supply

This circuit delivers either 4.8 or 7.2 V regulated at 15 mA with a 3-V input from a bank of photocells. Rl should be 453 kQ for a 7.2-V output and 274 РЁ for a 4.8-Vdc output. Regulator efficiency is around 70%. This should be considered when selecting suitable solar cells.

Solar Power Supply Circuit diagram :

Thursday, September 18, 2014

10W AUDIO AMPLIFIER WITH MUTING

DESCRIPTION

The TDA 1910 is a monolithic integrated circuit in MULTIWATT® package, intended for use in Hi-Fi audio power applications, as high quality TV sets. The TDA 1910 meets the DIN 45500 (d = 0.5%) guaranteed output power of 10W when used at 24V/4W. At 24V/8W the output power is 7W min.

Features:

muting facility
protection against chip over temperature
very low noise
high supply voltage rejection
low "switch-on" noise.
easy assembly
simple heatsink

Circuit Diagram

10W AUDIO AMPLIFIER WITH MUTING

Test Beeper For Your Stereo

The test beeper generates a sinusoidal signal with a frequency of 1,000 Hz, a common test frequency for audio amplifiers. It consists of a classical Wien-Bridge oscillator (also known as a Wien-Robinson oscillator). The network that determines the frequency consists here of a series connection of a resistor and capacitor (R1/C1) and a parallel connection (R2/C2), where the values of the resistors and capacitors are equal to each other. This network behaves, at the oscillator frequency (1 kHz in this case), as two pure resistors. The opamp (IC1) ensures that the attenuation of the network (3 times) is compensated for.

In principle a gain of 3 times should have been sufficient to sustain the oscillation, but that is in theory. Because of tolerances in the values, the amplification needs to be (automatically) adjusted. Instead of an intelligent amplitude controller we chose for a somewhat simpler solution. With P1, R3 and R4 you can adjust the gain to the point that oscillation takes place. The range of P1 (±10%) is large enough the cover the tolerance range. To sustain the oscillation, a gain of slightly more than 3 times is required, which would, however, cause the amplifier to clip (the ‘round-trip’ signal becomes increasingly larger, after all).

Circuit diagram:

Test

Test Beeper Circuit Diagram

To prevent this from happening, a resistor in series with two anti-parallel diodes (D1 and D2) are connected in parallel with the feedback (P1 and R3). If the voltage increases to the point that the threshold voltage of the diodes is exceeded, then these will slowly start to conduct. The consequence of this is that the total resistance of the feedback is reduced and with that also the amplitude of the signal. So D1 and D2 provide a stabilizing function. The distortion of this simple oscillator, after adjustment of P1 and an output voltage of 100 mV (P2 to maximum) is around 0,1%. You can adjust the amplitude of the output signal with P2 as required for the application. The circuit is powered from a 9-V battery. Because of the low current consumption of only 2 mA the circuit will provide many hours of service.

Author: Ton Giesberts - Copyright: Elektor Electronics 2007

Two Cell LED Torch

It sometimes comes as a bit of a shock the first time you need to replace the batteries in an LED torch and find that they are not the usual supermarket grade alkaline batteries but in fact expensive Lithium cells. The torch may have been a give away at an advertising promo but now you discover that the cost of a replacement battery is more than the torch is worth. Before you consign the torch to the waste bin take a look at this circuit. It uses a classic two-transistor astable multivibrator configuration to drive the LEDs via a transformer from two standard 1.5 V alkaline batteries.

The operating principle of the multivibrator has been well documented and with the components specified here it produces a square wave output with a frequency of around 800 Hz. This signal is used to drive a small transformer with its output across two LEDs connected in series. Conrad Electronics supplied the transformer used in the original circuit. The windings have a 1:5 ratio. The complete specification is available on the (German) company website at www.conrad.de part no. 516236. It isn’t essential to use the same transformer so any similar model with the same specification will be acceptable.

Two-Cell

Two-Cell

The LEDs are driven by an alternating voltage and they will only conduct in the half of the waveform when they are forward biased. Try reversing both LEDs to see if they light more brightly. Make sure that the transformer is fitted correctly; use an ohmmeter to check the resistance of the primary and secondary windings if you are unsure which is which. The load impedance for the left hand transistor is formed by L in series with the 1N4002 diode. The inductance of L isn’t critical and can be reduced to 3.3 mH if necessary. The impedance of the transformer secondary winding ensures that a resistor is not required in series with the LEDs.

Unlike filament type light sources, white LEDs are manufactured with a built-in reflector that directs the light forward so an additional external reflector or lens glass is not required. The LEDs can be mounted so that both beams point at the same spot or they can be angled to give a wider area of illumination depending on your needs. Current consumption of the circuit is approximately 50 mA and the design is even capable of producing a useful light output when the battery voltage has fallen to 1 V. The circuit can be powered either by two AAA or AA size alkaline cells connected in series or alternatively with two rechargeable NiMH cells.

Versatile Micropower Battery Protector

Protect your expensive batteries from discharge damage with this mini-sized electronic cutout switch. It uses virtually no power and can be built to suit a wide range of battery voltages.

Main Features

Disconnects load at preset battery voltage
Automatically reconnects load when battery recharged
Ultra-low power consumption (<20ma)
Miniature size
10A maximum rating
Suitable for use with 4.8-12.5V batteries
Transient voltage protection (optional)

Suitable for use in...

Cars, boats & caravans
Security systems
Emergency lighting
Small solar installations
Camera battery packs
Many other low-power applications

Picture of the project:
versatile-micropower-battery-protector-schema1

versatile-micropower-battery-protector-schema1

versatile-micropower-battery-protector-schema-backside

Back in May 2002, we (Silicon Chip) presented the "Battery Guardian", a project designed specifically for protecting 12V car batteries from over-discharge. This unit has proven to be very popular and is still available from kit suppliers. This new design does not supersede the Battery Guardian – at least not when it comes to 12V car batteries. Instead, it’s a more flexible alternative that can be used with a wide range of battery voltages.

Parts layout:
front-parts-layout-versatile-micropower-battery-protector-schema

front-parts-layout-versatile-micropower-battery-protector-schema

back-parts-layout-versatile-micropower-battery-protector-schema

In this new "Micropower Battery Protector", we’ve dispensed with the low-battery warning schemary and the relatively cheap N-channel MOSFET used in the Battery Guardian in favour of a physically smaller module that steals much less battery power. It costs a little more but can switch lower voltages, allowing it to be used with 6V & 12V lead-acid batteries and 4-cell to 10-cell NiCd and NiMH battery packs.

PCB layout:

pcb-layout-versatile-micropower-battery-protector-schema

Most battery-powered equipment provides no mechanism for disconnecting the batteries when they’re exhausted. Even when the voltage drops too low for normal operation, battery drain usually continues until all available energy is expended. This is particularly true of equipment designed to be powered from alkaline or carbon cells but retro-fitted with rechargeables.

Circuit diagram:
versatile-micropower-battery-protector-schema-diagram

versatile-micropower-battery-protector-schema-diagram

Another example is emergency lighting and security equipment designed to be float-charged from the mains. In an extended blackout period, the batteries can be completely drained and may not recover when the mains power is finally restored.

Source: Silicon Chip 27 July 2004

Wednesday, September 17, 2014

Fuse Box BMW 02 Touring Diagram

Fuse Box BMW 02 Touring Diagram - Here are new post for Fuse Box BMW 02 Touring Diagram.

Fuse Box BMW 02 Touring Diagram

Fuse

Fuse

Fuse Panel Layout Diagram Parts: parking and side light, license plate light, instrument lighteng, fog warning light, fog lamp relay, low beam headlight, turn indicator flasher, cigar lighter, jeater blower, clock, iterior light, hazard warning flasher, triling turn indicator, heated rear window, fuel pump, automatic choke, fuel gauge, coolant thermometer, oil pressure telltale, revolution counter, handbrake telltale, stop light, turn indicator light, horn relay, wier motor, washer, reversing lght.

Simple 40 Watt Inverter

This is the schematic of a simple 40W , 12 volts to 220 Volts inverter.You don’t believe, this is simple and cheap and working for me for last 4 years.The heart of the circuit is a CD 4047 IC which is wired as an astable multi vibrator here.Resistance and Capacitance at pin 1&2 determines the out put frequency.

Circuit diagram :

simple-40-watt-inverter

Simple 40 Watt Inverter Circuit Diagram

Here it is set to 60Hz.Due to this a two 180 degree out of phase ,120 Hz , 50% duty cycle waveforms will appear at pin 10 & 11.These waves are amplified by the complementary symmetry amplifier made of transistors BC 337 & TIP 3055 to drive the out put transformer.Don’t get feared of the technical terms, just wire it on a all purpose PCB.It is simple and will work.Don’t worry about the transformer windings ,buy a 220-110-0 primary,12-0-12 secondary , <50w transformer.you can select output voltage of 110v or 220v by a two way switch using such a transformer.

Don’t worry if you don’t have such a transformer, a simple 220 to 12-0-12 will also do the trick sacrificing the 110V option or vice versa.The best way to get a transformer is to break all useless electronic devices in your trash.Most probably you will find the transformer or more components needed here!

Tips :

First wire to oscillator part only.Then check out put Pin 10 &11 of CD4047 to obtain the required wave forms ( two 120Hz ,180 degree out of phase,50% duty cycle waves.

Then connect transistors ,transformer and load (25 W bulb for test).See it working!.

Explanation Fuse Box Chevy Blazer 1997 Diagram

Fuse Box Chevy Blazer 1997 Diagram - This show you about Fuse Box Chevy Blazer 1997 Diagram.

Fuse Box Chevy Blazer 1997 Diagram

Fuse

Fuse

Fuse Panel Layout Diagram Parts: battery radio, auxiliary power, mirror locks, headlamp, power lock, courtesy lamp, cigar lighter, HVAC, cruise control, ABS system, turn lamp, gauges, rear wiper, instrument cluster, illumination, t=redio ignition, park lamp.

IR Beam Breaker Schematics

This is an Infrared beam breaking alarm ideal to use in entry or passages.It is based on the working of the popular IR sensor Module TSOP 1738 which senses 38 kHz Infrared pulses from the IR LED of the transmitter. Range of the circuit is about 5 meters if the transmitter and receiver are properly aligned TSOP 1738 IR sensor module responds to only 38kHz pulsed infrared rays. Circuit diagram : IR Beam Breaker Schematics Circuit Diagram It will not sense continuous IR ray from the IR LED.So a transmitter circuit(as one in TV remote handset) based on 555 IC is required. Any standard transmitter circuit based on 555 IC can be used. But its output should be 38kHz exactly.TSOP 1738 gives 5 volt output and 5mA current in the off position. That is when IR rays are not available.Its output is current sinking so that when it receives 38kHz IR rays, output becomes zero.Pin 2 of the module should get a supply voltage between 4.5 to 6 volts.Higher voltage above 6 volts will destroy the device. The module is generally immune to ambient light, but may responds to sources of noice such as electronic ballasts. Out put from the IR module is given to the inverting input of IC1. LM311 is a precision voltage comparator . It looks like the common Op Amps like LM741, CA3130,CA 3140,TL071 etc.But its pin connections and output are different from other Op Amps. Pin 2 Non inverting Pin3 Inverting Pin 1 Ground Pin8 Vcc Pin7 Current sinking Output

The non inverting input of IC1 is connected to a potential divider comprising R1 and R2. When the IR sensor gets IR pulses from the transmitter, output of IC1 remains high. When the IR beam breaks, output from the sensor becomes high which triggers IC1. It then sinks current to activate buzzer and LED.

Tuesday, September 16, 2014

30W bridge car radio amplifier TDA7256

Description of TDA7256:

The TDA7256 is a class AB fully protected bridge power amplifier designed for car radio application. The high current capability allows to dirve low impedance loads up to 22 Ohm. The differential inputs availability makes it particularly suitable for boosters and active loudspeakers applications

Features of TDA7256:

NO AUDIBLE POP DURING MUTE AND
STANDBY OPERATIONS
MUTING TTL COMPATIBLE
VERY LOW STANDBY CONSUMPTION
PROGRAMMABLE TURN ON DELAY
DIFFERENTIAL INPUT
SHORT CIRCUIT PROTECTIONS:
RL SHORT - OUT TO GROUND - OUT TO VS
OTHER PROTECTIONS:
Load dump voltage surge
LoudspeakerDC current
Very inductive load
Overrating temperature
Open ground

Circuit diagram for TDA7256:

30W bridge car radio amplifier TDA7256 circuit diagram

PCB and layout for TDA7256:

30W bridge car radio amplifier TDA7256 pcb

PCB and layout for TDA7256: Download

Fixed Voltage Power Supply

The fixed voltage power supply is useful in applications where an adjustable output is not required. This supply is simple, but very flexable as the voltage it outputs is dependant only on the regulator and transformer you choose. The maximum output current is 1.5A. Fixed Voltage Power Supply Circuits diagram : Parts : Part Total Description C1 1 2200uF 35V Electrolytic Capacitor C2, C4 2 0.1uF Ceramic Disc Capacitor C3 3 10uF 35V Electrolytic Capacitor

D1, D2 1 1N4007 Silicon Diode

BR1 1 2A 30V Bridge Rectifier

U1 1 Regulator (See Notes) T1 1 Transformer (See Notes) S1 1 SPST 2 Amp Switch F1 1 2A 250V Fuse and Holder Misc 1 Heatsink For U1, Line Cord, Case, Wire

Notes :

Since this project operates from 120 (or 220, or 240, etc.) volts AC, it MUST be built inside a case.
U1 will reauire a heatsink.
You will need to choose T1 and U1 to match the voltage you want. Use the table below as a reference.

Temperature Sensor Wiring diagram Schematic

Simple Temperature Sensor Circuit Diagram. The LM35 temperature sensor provides an output of 10 mV/C for every degree Celsius over 0C. At 20C the output voltage is 20 10 = 200 mV. The schema consumes 00. The load resistance should not be less than 5 kQ. A 4- to 20-V supply can be used.

Simple Temperature Sensor Circuit Diagram

Simple

Overheat Detector Alarm Switch

At the heart of this circuit is a precision integrated temperature sensor type LM35 (IC1), which provides an accurately linear and directly proportional output in mV, over the zero to +155 degrees C temperature range. The LM35 develops an output voltage of 10 mV/K change in measured temperature. Designed to draw a minimal current of its own, the LM35 has very low self heating in still air. Here the output of the LM35 is applied to the non-inverting input of a comparator wired around a CA3130 opamp (IC2). A voltage divider network R3-P1 sets the threshold voltage, at the inverting input of the opamp. The threshold voltage determines the adjustable temperature trip level at which the circuit is activated.

Circuit diagram:

Overheat

Overheat Detector Alarm/Switch Circuit Diagram

When the measured temperature exceeds the user-defined level, the comparator pulls its output High to approx. 2.2 V causing transistor T1 to be forward biased instantly. T2 is also switched on, supplying the oscillator circuit around IC3 with sufficient voltage to start working. The 555 set up in astable mode directly drives active piezoelectric buzzer Bz1 to raise a loud alert. Components R7, R8 and C4 determine the on/off rhythm of the sounder. A transistor based relay driver may be driven off the emitter of T1 (TP1). Similarly, replacing the piezo sounder with a suitable relay allows switching of high-power flashers, sirens or horns working on the AC mains supply.

Author: T. K. Hareendran - Copyright: Elektor Electronics 2007

Monday, September 15, 2014

2005 Gmc H2 Wiring Diagram

2005 Gmc H2 Wiring Diagram

This is 2005 Gmc H2 Wiring Diagram: driver window switch, switch power, front passenger switch,
left rear window, right rear window switch, window lockout switch, window lockout indicator, global window down signal, power window motor left front down control, window motor driver, front passenger window switch, passenger door module, driver door module, memory heated seat switch, window motor front passenger.

1000W MOSFET stage Master MK2

1000W MOSFET Description:

Fifth Generation HEXFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET Power MOSFETs are well known for, provides the designer with anextremely efficient and reliable device for use in a wide variety of applications.

The TO-247 package is preferred for comme rcial-industrial applications where higher power levels preclude the use of TO-220 devices. The TO-247 is similar but superior to the earlier TO-218 package because of its isolated mounting hole. The 1000Watt MOSFET LEGEND stage Master MK2 is a very good and powerful amplifier. It is not into the classroom HiEnd sure, but very respectable sounding unit with lots of of power. It was not designed with home interior as the primary goal before, such a power used only rarely in the house and indoor except perhaps in some larger nightclubs. Frankly, due to a high performance, could PA light rather go class, but other specifications and great quality over the PA standards and needs! My only additional suggestion for you to think about it at length, Master internship as a Master MK2.Internship Master 500 ... 1000W, but is aa little easier (and cheaper) to build. "PCB show thus as below 1000W mosfet PCB 1000W mosfet PCB.

1000W MOSFET Circuit Diagram:

1000W MOSFET circuit diagram

1000W MOSFET PCB:

1000W MOSFET pcb

Datasheet for transistors:

IRFP260 Datasheet (PDF) - International Rectifier - IRFP260 Click to view
MJE340 Datasheet (PDF) - Motorola, Inc - MJE340 Click to view
MJE350 Datasheet (PDF) - Motorola, Inc - MJE350 Click to view

50W audio amplifier LM3876 Wiring diagram Schematic

LM3876 is a high performance audio power amplifier IC from National Semiconductors. The LM3876 can deliver 50watts of output power into an 8 ohm loudspeaker. LM3876 has excellent signal to noise ratio and has wide supply voltage range. Other features of LM3876 are output to ground short schema protection, input mute function, and output over voltage protection, etc. Applications of LM3876 are component stereo, compact stereo, surround systems, self powered speakers, etc.

Circuit diagram :
50-w-audio-amplifer-schema

50W audio amplifier Circuit Diagram

The 50 watt audio amplifier schema shown below is designed based on the application diagram from the data sheet of LM3876. Some modifications are made on the original schema for improving the performance. The bipolar electrolytic capacitor C7 is the input DC decoupling capacitor. R4 is the input resistance. R2 & R1 and bipolar electrolytic capacitor C5 forms a feedback schema. C2, C1 are filter/by-pass capacitors for the positive supply rail. C4 & C3 are the filters/by-pass capacitors for the negative supply rail. The feedback resistor R2 sets the gain of the amplifier. L1 provides high impedance at high frequencies so that R7 may decouple capacitive loads. R3 is the mute resistance which allows 0.5mA to be drawn from pin8 to turn the mute function OFF. S1 is the mute switch. Resistor R6 and capacitor C8 forms a Zobel network which improves the high frequency stability of the amplifier and prevents oscillations.

Notes :

The LM3876 can be operated from a supply voltage range of +/-12V to +/-49V DC.
I recommend +/-35V DC for powering the IC.
LM3876 requires a proper heat sink.
Quiescent current of LM3876 is around 70mA

New 100W Inverter 12VDC to 220VAC circuit diagram

The following diagram is an inverter schema which will give you 220V AC 50Hz with maximum power of 100W. This inverter built using transistors both the square wave generator and the amplifier.The Q1 and Q2 used generate square wave. Q5-Q8 amplify the signal and the transformer to increase the AC/square wave current from 12VAC to 220V AC 50HZ.

100W Inverter 12VDC to 220VAC schema diagram

100W

Inverter PCB layout

Sunday, September 14, 2014

FUse Box Chevrolet Blazer Instrument Panel 1997 Diagram

FUse Box Chevrolet Blazer Instrument Panel 1997 Diagram - This show you about FUse Box Chevrolet Blazer Instrument Panel 1997 Diagram.

FUse Box Chevrolet Blazer Instrument Panel 1997 Diagram

FUse

Fuse Panel Layout Diagram Parts: battery, auxiliary power, headlamp switch, amplifier, power lock, courtesy lamp, cigar lighter, HVAC, cruise control, ABS system, turn light, gauges, wiper, instrument cluster, park lamp, radio ignition, illumination, stear wheel illumination.

Long Duration Timer using A Ttiny 2313

This timer schema is designed to switch on a 12 V load in a solar-powered installation for a preset period at the press of a button. When the period has expired a latching relay disconnects both the load and the controller schema from the 12 V supply. The length of the period can be configured by making suitable changes to the microcontroller’s source code.

Software

When button S1 is pressed a voltage appears across relay coil L1, and the relay switches the load on. Since the relay is a latching type, it remains in this state when the but ton is released. There is now a supply to the 78L05 voltage regulator (a low-dropout type such as the LP2950CZ-5.0 may also be used) and the microcontroller is powered up. In the microcontroller the timer program runs until the configured time interval has elapsed. Around 90 % of the way through the time period LED D2 lights as a warning that the load will shortly be switched off, and this time can also of course be configured by changing the software.

When the full time interval has elapsed the microcontroller sets an output (pin 7) high, which triggers the CNY 17-3 optocoupler and in turn drives relay coil L2. The relay returns to its initial state, disconnecting the load as well as the controller (which is also powered via the relay contact) from the 12 V supply.

Long Duration Timer Circuit Diagram

Long

The author used a miniature 16 -by-2 LCD panel type HMC16223SG in his prototype, measuring just 52 mm by 20 mm. It is of course possible to use any standard LCD module that uses an HD44780-compatible controller. Note that P1 is used to adjust the contrast of the LCD: if the display appears blank it is worth checking the contrast set-ting before suspecting a more serious problem! If desired, the LCD can be dispensed with, along with the corresponding parts of the source code.

The upper line of the LCD shows the total time period, in seconds, for which the soft-ware is configured, while the lower line shows the time, in seconds, since the button was pressed.

The Lcddump shows the LCD settings under BASCOM-AVR. The source code for the program is available for download. Link

10 Band Equalizer Wiring diagram Schematic

The equalizer presented in this article is suitable for use with hi-fi installations, public-address systems. mixers and electronic musical instruments. The relay contacts at the inputs and outputs, in conjunction with S2, enable the desired channel to be selected. The input may be linked directly to the output, if wanted. The input impedance and amplification of the equalizer are set with S1 and S3. The audio frequency spectrum of 31 Hz to 16 kHz is divided into ten bands. Ten bands require ten filters, of which nine are passive and one active. The passive filters are identical in design and differ only in the value of the relevant inductors and capacitors. The requisite characteristics of the filters are achieved by series and parallel networks.

The filter for the lowest frequency band is an active one to avoid a very large value of inductance. It is based in a traditional manner on op amp A1. The inductors used in the passive filters are readily available small chokes. The filter based on L1 and L2 operates at about the lowest frequency (62 Hz) that can be achieved with standard, passive components. The Q(uality) factor of the filters can, in principle, be raised slightly by increasing the value of R19 and R23, as well as that of P1–P10, but that would be at the expense of the noise level of op amp IC1. With component values as specified, the control range is about ±11 dB, which in most case will be fine. A much larger range is not attainable without major redesign.

Circuit diagram:

10-Band_Equalizer_Circuit_Diagramw

10-Band Equalizer Circuit Diagram

The input level can be adjusted with P1, which may be necessary for adjusting the balance between the channels or when a loudness control is used in the output amplifiers. Several types of op amp can be used:in the prototype, IC1 is an LT1007, and IC2, an OP275. Other suitable types for IC1 are OP27 or NE5534; and for IC2, AD712, LM833 and NE5532. If an NE5534 is used for IC1, C2 is needed; in all other cases, not. The schema needs to be powered by a regulated, symmetrical 15 V supply. It draws a current of not more than about 10mA.

4x7W OR 2x22W CAR RADIO POWER AMPLIFIER

Features:

HIGH OUTPUT POWER CAPABILITY:
4 x 9.5W OR 2 x 32W/4Ω MAX
4 x 8.5W OR 2 x 28W/4Ω EIAJ
4 x 7W OR 2 x 22W/4Ω @14.4V,1KHz; 10%
MINIMIZED EXTERNAL COUNT
- NO NEED OF DECOUPLING CAPACITORS
- NO NEED OF BOOTSTRAP CAPACITOR
- NO NEED OF EXTERNAL COMPENSATION
- INTERNALLY FIXED GAIN (20dB)
POP-FREE AUDIO SECTION
ST-BY FUNCTION (C-MOS)
MUTE FUNCTION (C-MOS)
CLIP DETECTOR, THERMAL WARNING,
SHORT CIRCUIT DETECTION
BUILT-IN VOLTAGE REGULATORS:
- 5V @ 150mA WITH RESET
- 5V @ 500mA WITH ST-BY
- 8.5V @ 200mA WITH ST-BY

Circuit Diagram:

TDA7451 2x22 W

TDA7451 4x7W

Saturday, September 13, 2014

Morning Alarm Wiring diagram Schematic Using LDR

Morning

Description

Circuit showing a morning alarm.Here we have used a switching transistor.When the sun rise up ldr is low resistance so the ldr is conduct and a positive volt coming to the base of the Q1 there for the transistor will switch.This time the buzzer is ON . Adjust the preset control the intensity of light.Manually cut off the power.Are you interested please comment and join this site

Component Required

Resistor 4.7k preset , LDR

Transistor BC 548

Buzzer

0 5V Negative Supply Wiring diagram Schematic

This is a Simple 0.5V Negative Supply Circuit Diagram. This simple schema consists of two LEDs and a photo diode. It generates a negative voltage with a current level of a couple milliamps. It is ideal for supplying a negative rail to low power “rail to rail” op amp diagram, which need to have a true zero volts output. Note: This diagram is not particularly efficient.

Simple 0.5V Negative Supply Circuit Diagram

0.5V

Treble Tone Control

The treble control works in a similar manner as the bass control elsewhere in this site, but contains several modifications, of course. One of these is the series network C1-C2– R1– R1 1. The d.c. operating point of IC3 is set with resistors R12 and R13. To ensure that these resistors do not (adversely) affect the control characteristics, they are coupled to the junction of R9 and R1 0. In this way they only affect the low-frequency noise and the load of the opamp. Their value of 10 kΩ is a reasonable compromise. The functions of switches S1– S3 are identical to those of their counterparts in the bass tone control; their influence is seen clearly in the characteristics.

Circuit diagram:

Treble_Tone_Control_Circuit_Diagramw

Treble Tone Control Circuit Diagram

Good symmetry between the left-hand and right-hand channels is obtained by the use of 1% versions of R1– R1 3 and C1, C2. The value of resistors R2– R1 0 is purposely different from that of their counterparts in the bass tone control. In the present schema, the control range starts above 20 kHz. To make sure that a control range of 1 0 dB is available at 20 kHz, the nominal amplification is 3.5 (11 dB ). The control schema draws a current of about ±10 mA.

Subscribe to: Posts (Atom)

blogspot visitor counter