🐇 Power Supply With Current Limit

There are two ways to provide a current-limited supply to charge a battery. a) The current limiter way. Use an active current limiter. The simplest of these, if you have the voltage headroom, is an LM317, which maintains 1.2v between its output and adjust terminals. If you connect (for instance) 12ohms between them, it will limit at 100mA. .

power supply with current limit