Car Charger Circuit Diagram. Here is a simple and easy to build circuit diagram of a 12v car battery charger. Heart of the circuit is a lm78m05 ic which is a 5v positive voltage regulator ic.
For lower power circuits typically wires are bundled together with plastic sheathing. Charger s input voltages are 20 volt ac. Here is a simple and easy to build circuit diagram of a 12v car battery charger.
R1 1kohms d1 1n4001 t1 220v 17v 4a transformer r2 1 2kohms d2 6 8v 0 5w zener ld1 green led r3 470 ohms tr1 4 7kohms trimmer ld2 red led r4 470 ohms q1 bty79 or similar 6a scr m1 0 5a dc ampere meter r5 10kohms q2 c106d scr s1 10a d p on off switch c1 10uf 25v gr1.
This ic has many built in featuers like thermal overload protection short circuit protection safe operating. Ic 7815 reg. The regulation also requires that no diversity be allowed where a final circuit supplies more than one charging point. Here the desired load is a car battery with rating of about 40ah.
