Quick question about the transistor choice. Could you also use IRF520 transistors as well as the 510s? I am wondering as I have some 520s left over from another project.?
WK4DS?
On Sat, Nov 18, 2023 at 10:45 Ashhar Farhan <
farhanbox@...> wrote:
I have observed that any linear amplifier when operated on keydown for more than a few seconds starts to reduce the output power gradually.
My sbitx v3 amplifier is using IRF510s. The output power starts at 25 watts on CW keydown, registering 100 v peak to peak. However, in about 30 seconds, the output is reduced to 20 watts.?
This is probably due to the drift of gate bias with temperature.
- f?
WK4DS