I'm after some help with a circuit for a current limiter ..
What I'm trying to do is charge a battery (slowly) in a trailer by tapping into the car parker light wire .. As the battery is not used a lot but is a car battery and the voltage has the potential of going flat I would like to limit the current to 2 amps max, no matter the output voltage .. I think the Parker lights should handle an extra 2 amps as the trailer has all leds .. I'm not smart enough to work out all the part numbers although there are a few circuits on the web .. Can someone draw me a circuit with all parts & values that I can pick cheap from JayCar ..