Ok Latest Status.
With the last remaining Fet I made a few mods to make a single ended Hartley.
this time the gate has 2 zeners back to back. It's a bit more efficient, with no load the power input is 2.5W. With a 50 ohm load and FW rect, the O/P is around 16V ie about 5W, Power I/P with load about 14W. The Fet runs cold and the coil is only warm. There is a snag though........................It won't start on its own !!!!!!!!!!!!!!!!!!!!!!!#$%^&
to start I have to touch another cap across the cap in the gate cct. I have tried putting other Resistors between the + supply line and gate (100K...to...15K) but it still won't start.
This was starting to look good !!! ANY IDEAS?
Pics are Drain waveform, and cct
Mike
With the last remaining Fet I made a few mods to make a single ended Hartley.
this time the gate has 2 zeners back to back. It's a bit more efficient, with no load the power input is 2.5W. With a 50 ohm load and FW rect, the O/P is around 16V ie about 5W, Power I/P with load about 14W. The Fet runs cold and the coil is only warm. There is a snag though........................It won't start on its own !!!!!!!!!!!!!!!!!!!!!!!#$%^&
to start I have to touch another cap across the cap in the gate cct. I have tried putting other Resistors between the + supply line and gate (100K...to...15K) but it still won't start.
This was starting to look good !!! ANY IDEAS?
Pics are Drain waveform, and cct
Mike
