I am putting together a simple ALC circuit for my homebrew amp and TS870. The
ALC circuit is found in Orr, K8RA Hanbook amp, K5DR webpage, etc. It uses a
capacitive divider off the RF input line and a variable DC supply. My TS870
requires a -6 to -20v range for ALC adjustment as per the manual. So I'm
having some trouble figuring out what capacitor values I need in the divider.
I tried this in SPICE but cannot get the modeled circuit to generate negative
voltage.
Thanks,
Steve KK7UV
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