Re: LF: output transformer problems

[G0MRF@aol.com]

In a message dated 5/18/04 9:19:13 PM GMT Daylight Time, knaap159@zonnet.nl writes:

> Wonder what current I should have when applying lower supply voltages
> to the FET's.
> For example. what currents to others have at 15V or 20V or so.
>
> 73, Dick, pa4vhf


The amplifier follows the standard relationship of output power to supply voltage.
i.e.  Twice the voltage will give four times the output power.

If you are using voltages much lower than 28V then you can increase the secondary turns or decrease the primary winding to compensate.

Removing the diodes will cause a negative voltage pulse on the FET gates as they has now lost their low impedance reference to ground. This may or may not be a problem.

Good luck

David