Investigating potential power current sources capable of handling both AC and DC currents using the LM317 current source.

After finding a download of the circuit diagram for his CSI3003X ... just order a prebuilt kit from [Ian]. Adding off-load constant current setting. Replacing the front panel push-button switch ...

[YS] was inspired to come up with the circuit after reading Wednesday’s Re:load dummy load post. That was a constant current load, not a constant resistance load. [YS] started with the schematic ...