1600 Watt generator electrical problems
I have an obsolete generator (no longer supported). It uses two brushes. Recently I have needed it and got it running. But there is no AC output. If I energize the brushes with 13 VDC it will put out AC voltage, but as soon as I remove the 13 VDC the AC output stops immediately. So, I replaced the capacitor, and not it will put out AC for a second on startup, then nothing, until I energize the brushes with DC voltage again.
I tested the two diodes inside the head, and they both test OK. There is a small black box and a voltage regulator left. The black box doesn't test out as a diode, and has a resistance going both ways of around 6.4 ohms.
The voltage regulator is a 4 wire unit. One wire goes to the large capacitor, another wire goes to one of the brushes, another wire goes to the ground, and another wire goes back to the generator coil.
Can anyone give me some advice? maybe building my own regulator?