11-01-2022, 08:41 PM
Hi all,
My liquid metal heat sink compound turned up so I've completed the Chinese 2m amp and performed some tests.
Final test for the night I got 416w out for 5w in
I had to take one turn off the input transformer and reduce the series cap to a few pF to increase gain to just about 20dB
Power consumption is 12.1A@50v so 600w in for 416w out and that computes as 68% efficiency ! - that's not bad
Next tests are 10 minute key down tests to see what melts, if anything.
cheers
Tim
My liquid metal heat sink compound turned up so I've completed the Chinese 2m amp and performed some tests.
Final test for the night I got 416w out for 5w in
I had to take one turn off the input transformer and reduce the series cap to a few pF to increase gain to just about 20dB
Power consumption is 12.1A@50v so 600w in for 416w out and that computes as 68% efficiency ! - that's not bad
Next tests are 10 minute key down tests to see what melts, if anything.
cheers
Tim