Automatic charger circuit diagram

Published:2011/7/25 0:11:00 Author:Sophia | Keyword: Automatic charger | From:SeekIC

Circuit theory The circuit is designed aiming at a single-cell Ni-MH battery. Figure: electricity is transformed through the transformer and rectified by full-bridge. Capacitor C1 is filtered into DC. LED1 is the power indicator, LED2 is the charge indicator. T1 is the charge control transistor, which works in the switch state; T2, T3 and C2 constitute a monostable flip-flop. R6 and RP constitute a limited pressure sampling circuit. R7 is limiting the sampling resistor. Standby: the power must be on, if not, transistor T2 will be cut-off because of no base voltage, and transistor T1 is also closed, no voltage is outputed. At this moment, only the power indicator LED1 lights.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/Battery_Charger/Automatic_charger_circuit_diagram.html

Print this Page | Comments | Reading(3)