Showing posts with label ni. Show all posts
Showing posts with label ni. Show all posts
Monday, September 1, 2014
Simple Ni cad charger Wiring diagram Schematic
Simple Ni-cad charger Circuit Diagram uses constant current LEDs to adjust charging current. It makes use of LEDs that pass a constant current of about 15 mA for an applied voltage range of 2-18 V. They can be paralleled to give any multiple of 15 mA and they light up when current is flowing.The schema will charge a single cell at 15, 30 or 45 mA or cells in. series up to the rated supply voltage limit (about 14 V).
Simple Ni-cad charger Circuit Diagram
Wednesday, August 27, 2014
Ni Cd and Ni MH Adjustable constant current Wiring diagram Schematic
This is a battery charger schema with adjustable current for Ni-MH or Ni-Cd. It can be used for a constant current power, which can be set to any value from a few milliamps to about 500 mA. The maximum current is 500 mA, because that is the limit of transistor BC140. The input voltage must be above 5.25V output voltage, this is due to losses as 1.25V current limit and approximately 4V regulator.
Battery Charger Ni-Cd and Ni-MH Adjustable constant current Circuit Diagram
Battery Charger Ni-Cd and Ni-MH Adjustable constant current Circuit Diagram
The LM317 regulator is used, it should have a sink.
Components
R1 100Ω resistor
VR1 trimpot or potentiometer 500Ω
Capacitor C1 0.1μF
C2 Capacitor 0.01μF
Diode D1 1N4001
Q1 Transistor BC140
IC1 Voltage Regulator LM317
Subscribe to:
Posts (Atom)
