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Vehicle nickel-cadmium battery charger circuit diagram

2015-03-22 13:29  
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Vehicle nickel-cadmium battery charger circuit diagram
Vehicle nickel-cadmium battery charger circuit is shown in the above picture. It makes use of NE555 timer and two voltage multiplier circuits composed of power transistor so as to convert the voltage of vehicle battery from 12V to above 20V and then charge the 12V nickel-cadmium battery without changing the current. The voltage which has been multiplied sends the power current to three-end current stabilizer. NE555 are connected and form multi-vibrator, and the switch frequency is 1.4KHz. The charging current is set at 50mA, which can charge 10 pieces of 500mA·h nickel-cadmium batteries.