05-06-2013, 10:24 PM
Hi Gents,
No it wasn't from 4HV, I found it a while back. The problem is probably down to the coil form/layout, It just wouldn't start unless I reduced the gate biasing and then the waveform was very bad. I removed a few components so that it is a very simple Hartley and now it starts reliably and the output waveform is basically a sine wave.
I was a bit surprised with the heating of the caps, I had thought that the quality of them was quite good, they are rated at 600V and the frequency is quite low at 82KHz.
I can understand the coil getting hot as the wire is only 0.8mm dia.
Mike
No it wasn't from 4HV, I found it a while back. The problem is probably down to the coil form/layout, It just wouldn't start unless I reduced the gate biasing and then the waveform was very bad. I removed a few components so that it is a very simple Hartley and now it starts reliably and the output waveform is basically a sine wave.
I was a bit surprised with the heating of the caps, I had thought that the quality of them was quite good, they are rated at 600V and the frequency is quite low at 82KHz.
I can understand the coil getting hot as the wire is only 0.8mm dia.
Mike
