Simple Car Battery Charger Circuit Schematic

Eltronicschool. - For you who want to complete your car with battery charger, we think we will suggest you to make it your self with simple circuit schematic like in figure 1 below. We think this this circuit very useful for you to provide battery charger in your car and can used in every time.

Circuit Schematic

Figure 1. Simple Car Battery Charger Circuit Schematic (CircuitsToday)

Component List

Please see all the components from figure 1 above.

Description

Circuit schematic like in figure 1 above is Simple Car Battery Charger Circuit Schematic. Circuitstoday site describe this circuit as like that The circuit is based on the IC MC78T12ABT from Freescale.The IC is nothing but a 7812 in TO-3 package with 3A capacity. 

The transformer T1 steps down the mains voltage and diodes D1&D2 does the job of rectification. Capacitor C1 does the filtering and C2 acts as a decoupling capacitor. The ground terminal of IC1 is lifted to 2.1V using the diodes D3 , D4 and D5 . 

So the output from the IC1 will be a regulated 14.1V (12+2.1).The battery is charged via diode D6.The D6 blocks reverse flow of current from battery to charging circuit when the mains power is not available. Meter M1 shows the charging current and M2 shows the charging voltage.