HM3S, Great work with this circuit, oks. Is HM3S a Goldmund clone? I experienced the oscilation problems when I used the 2sk135/J50 mosfets. I tried many different compensation techniques, but only the oscilation frequency changed. The sound and oscilliscope measurements are otherwise very good. I am now trying your suggested driver changes. I also found a fault on the PCB with the offset trimpot pin arrangement, which is different to the circuit diagram layout and did not adjust properly. I changed the trimpot pins to connect like in the circuit diagram.
Are you using the Source resistors or did you remove them? What value Gate resistors did you use?
Are you using the Source resistors or did you remove them? What value Gate resistors did you use?
