Recent content by Basil

I have a 137kHz amateur band RF amp built to this schematic and it works beautifully with the same designers LPF. The gate and drain waveforms are excellent. I built the MF version and I am having a nightmare with it. Poor gate and spiky drain waveforms took out many FET's. I replaced the...

I am a radio amateur in the UK with a great interest in operating on LF and MF (circa 137kHz LF and circa 470 kHz MF). I am having problems with two amps I have built from professionally designed schematics, these are home brew Class D amps for MF which have terrible drain waveforms, one 400W...