12V Battery Charger with L200 and 741
R10 adjust charge drawn to battery. Ampmeter can be used to get right charge level.
1/10 from battery value.
| Component | Ref./Value | Type |
|---|---|---|
| R1 | 220R | Resistor |
| R2 | 15K | Resistor |
| R3 | 1R | 1/2W Resistor |
| R4 | 47K | Resistor |
| R5 | 220R | Resistor |
| R6 | 100K | Resistor |
| R7 | 1K | Resistor |
| R8 | 470R | Resistor |
| R9 | 470R | Resistor |
| R10 | 100K | Adjust. Resistor |
| C1 | 2200uF | 25V Electrolytic Capacitor |
| IC1 | L200 | Voltage Regulator w/ Heatsink |
| IC2 | LM741 or TL081 | Ampop IC |
| D1 | 1N4004 | 1A 400V diode |
| D2 | 1N4148 | Diode |
| D3 | LED | Green Led |
| D4 | LED | Red Led |
| D5 | Rectifier Bridge 1A | 4 x Rectifier Diodes 1A |
| BZ | BUZZER | Optional |
| T1 | AC-AC Transformer | 220 or 110 AC to 15V AC 10VA |
