On Tue, Mar 29, 2022 at 08:57 PM, <bc3910@...> wrote:
Where he measures the voltage from the doubler, between D3 and D5. running the same rail voltage of 12.7v he got about 70VDC between the two diodes. I got about 8VDC. Hopefully, that might be a clue to help someone smarter than I toward the next steps.
Bryan,
The voltage at that point comes from rectifying and doubling the output of the amp.? Since the amp is not amplifying RF, there is not signal to double.? The value you are measuring seems reasonable if there is no RF being supplied to the amp.
In place of the oscilloscope, you can in some cases use an RF Probe.? I have one built from a kit that I tested for our Build Club:
Or if you have parts already:
That would at least let you know if you are getting RF from the QCX through to the IRF510s.?
73
Evan
AC9TU
?
