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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.

Battery Charger with L200 and 741

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

Print Control board for Battery Charger with L200 and 741

layout and components for battery charger