Showing posts with label x. Show all posts
Showing posts with label x. Show all posts
Monday, November 3, 2014
SAFELY DISCHARGE X CAPACITORS ELECTRONIC DIAGRAM
SAFELY DISCHARGE X CAPACITORS ELECTRONIC DIAGRAM
When the AC voltage is disconnected, CAPZero automatically and safely discharges the X capacitor by closing the circuit through the bleed resistors and directing the energy away from the exposed AC plug. This approach provides engineers with total flexibility in their choice of the X capacitor used to optimize differential- mode EMI filtering without worrying about the effect of the required bleed resistors on system no-load and standby power budget. The innovative design inherently meets international safety standards for all open and short-circuit fault tests, allowing CAPZero to be used before or after the system input fuse. CAPZero is suitable for all AC-DC converters with X capacitors that require very low standby power. It’s offered with 825- or 1,000-V MOSFETs to support a variety of power supply design needs. It is ideal for a wide range of applications, including PCs, servers/workstations, monitors and TVs, printers and notebooks, and appliances requiring EuP Lot 6 compliance and adapters requiring ultra-low no-load consumption. CAPZero devices are available now in an SO-8 package at $0.40 each for 10,000- piece quantities. [www.powerint.com]
Saturday, September 13, 2014
2 x 25 W Power amplifier for car radio TDA7376B
Features
High output power capability:
2 x 40 W max./ 4
2 x 35 W/4 EIAJ
2 x 25 W/4 (14.4 V, 1 kHz, 10 %)
2 x 25 W/ 2 (14.4 V, 1 kHz, 10 %)
Differential inputs
Minimum external components count
Internally fixed gain (26 db)
Mute function (cmos compatible)
Automute at minimum supply voltage detection
Standby function
No audible pop during mute and standby operations
Clipping detector with programmable distortion threshold
short circuit (out to ground, out to supply voltage, across the load)
overrating chip temperature with soft thermal limiter
load dump voltage
fortuitous open ground
loudspeaker dc current
ESD
Description
High output power capability:
2 x 40 W max./ 4
2 x 35 W/4 EIAJ
2 x 25 W/4 (14.4 V, 1 kHz, 10 %)
2 x 25 W/ 2 (14.4 V, 1 kHz, 10 %)
Differential inputs
Minimum external components count
Internally fixed gain (26 db)
Mute function (cmos compatible)
Automute at minimum supply voltage detection
Standby function
No audible pop during mute and standby operations
Clipping detector with programmable distortion threshold
short circuit (out to ground, out to supply voltage, across the load)
overrating chip temperature with soft thermal limiter
load dump voltage
fortuitous open ground
loudspeaker dc current
ESD
Description
The TDA7376B is a new technology dual bridge audio amplifier in Multiwatt 15 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output stage configuration the TDA7376B delivers a rail-to-rail voltage swing with no need of bootstrap capacitors. Differential input pairs, that will accept either single ended or differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications.The audio mute control, that attenuates the output signal of the audio amplifiers, suppresses pop On - Off transients and cuts any noises coming from previous stages. The standby control, that de-biases the amplifiers, reduces the cost of the power switch. The on-board programmable distortion detector allows compression facility whenever the amplifier is over driven, so limiting the distortion at any levels inside the presettable range.
Circuit diagram:
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| 2 x 35 W Power amplifier for car radio |
PCB layout
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| pcb layout for TDA7376B Power amplifier for car radio |
Saturday, September 6, 2014
2 x 40 W car radio power amplifier
FEATURES
Low dissipation due to switching from Single-Ended (SE) to Bridge-Tied Load (BTL) mode
Differential inputs with high Common Mode Rejection Ratio (CMRR)
Mute, standby or operating mode selectable by pin
Load dump protection circuit
Short-circuit safe to ground; to supply voltage and across load
Loudspeaker protection circuit
Thermal protection at high junction temperature
Device switches to single-ended operation at high junction temperature
Clip detection at 2.5 % THD
Diagnostic signal indicating clipping, short-circuit protection and pre-warning of thermal protection.
GENERAL DESCRIPTION
The TDA1565TH is a monolithic power amplifier in a 20-lead heatsink small outline plastic package. It contains two identical 40 W amplifiers. Power dissipation is minimized by switching from SE to BTL mode only when a higher output voltage swing is needed. The device is developed primarily for car radio applications.
Circuit Diagram:
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| Circuit diagram 2 x 40 W car radio power amplifier |
PCB layout:
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| PCB layout TDA1564 2 x 40 W car radio power amplifier |
2 X 30Watt home amplifier circuit
Audio amplifier circuit is very suitable for use at home, using a subwoofer speaker, or woofer speaker. Usually, also called home amplifier, audio amplifiers are based on the IC and ic are used still in series with type STK457 STK and besides it also can use the STK459, 460, 461, 463, 465. And each ic has the quality of each one, please look at alldatasheet.com.
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Read more
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Sunday, August 31, 2014
TDA1552Q 2 x 22 W BTL stereo car radio power amplifier
GENERAL DESCRIPTION
The TDA1552Q is an integrated class-B output amplifier in a 13-lead single-in-line (SIL) plastic power package. The circuit contains 2 x 22 W amplifiers in Bridge Tied Load (BTL) configuration. The device is primarily developed for car radio applications.
Features
- Requires very few external components
- High output power
- Low offset voltage at outputs
- Fixed gain
- Good ripple rejection
- Mute/stand-by switch
- Load dump protection
- AC and DC short-circuit-safe to ground and VP
- Thermally protected
- Reverse polarity safe
- Capability to handle high energy on outputs (VP = 0 V)
- Protected against electrostatic discharge
- No switch-on/switch-off plop
- Low thermal resistance
- Flexible leads.
Circuit diagram:
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| Circuit diagram for TDA1552Q 2 x 22 W BTL stereo car radio power amplifier |
Monday, August 25, 2014
2 X 30Watt home amplifier circuit
Audio amplifier circuit is very suitable for use at home, using a subwoofer speaker, or woofer speaker. Usually, also called home amplifier, audio amplifiers are based on the IC and ic are used still in series with type STK457 STK and besides it also can use the STK459, 460, 461, 463, 465. And each ic has the quality of each one, please look at alldatasheet.com.
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C5 = 0.1uF
C8 = 0.1uF
Read More..
Part List :
R1 = 22K
R2 = 22K
R3 = 330R
R4 = 33K
R5 = 1K
R6 = 1K
R7 = 4.7R
R8 = 3K3
R9 = 3K3
R10 = 4.7R
R11 = 100R
R12 = 33KR13 = 330R
C1 = 0.1uF
C2 = 0.1uF
C3 = 100uF
C4 = 100uFC5 = 0.1uF
C6 = 47uF
C7 = 47uFC8 = 0.1uF
C9 = 100uF
C10 = 100uFU1 = STK457,STK459, 460, 461, 463, 465.
Sunday, August 24, 2014
2 x 2 3 Watts power amplifier schematics
Do not misunderstand, this series is one of several series of power amplifiers that have output / low output power. This amplifier output is only possess more or less 4Watt. Or 2 X 2Watt stereo power amplifier. Minimum required voltage is not less than 3 volts and a maximum voltage of no more than 14 volts, and voltage must be rectified and filtered to obtain the maximum of the processed audio.
Thursday, August 21, 2014
TDA2005 2 X 20 Watt Power Amplifier
This time, there is a series of audio amplifer 20W as well, but using IC TDA 2005 as a series of his base amplifier.
Read moreSunday, August 17, 2014
4 x 46 W quad bridge car radio amplifier TDA7384A
Features
■ High output power capability:
– 4 x 46 W / 4 max.
– 4 x 27 W / 4 @ 14.4 V, 1 kHz, 10 %
■ Low distortion
■ Low output noise
■ Standby function
■ Mute function
■ Automute at min. supply voltage detection
■ Low external component count:
– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
■ Protections:
– Output short circuit to GND, to VS, across
the load
– Very inductive loads
– Overrating chip temperature with soft
thermal limiter
– Load dump voltage
– Fortuitous open GND
– Reversed battery
– ESD
Description
The TDA7384A is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed
■ High output power capability:
– 4 x 46 W / 4 max.
– 4 x 27 W / 4 @ 14.4 V, 1 kHz, 10 %
■ Low distortion
■ Low output noise
■ Standby function
■ Mute function
■ Automute at min. supply voltage detection
■ Low external component count:
– Internally fixed gain (26 dB)
– No external compensation
– No bootstrap capacitors
■ Protections:
– Output short circuit to GND, to VS, across
the load
– Very inductive loads
– Overrating chip temperature with soft
thermal limiter
– Load dump voltage
– Fortuitous open GND
– Reversed battery
– ESD
Description
The TDA7384A is an AB class audio power amplifier, packaged in Flexiwatt 25 and designed
for high end car radio applications. Based on a fully complementary PNP/NPN configuration, the TDA7384A allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced boundary components count allows very compact sets.
Circuit Diagram
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| 4 x 46 W quad bridge car radio amplifier |
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