[Amps] Alpha 77D anode choke swap?
ranchorobbo at gmail.com
Mon Apr 16 09:05:46 EDT 2018
>50 uh will also work just fine on 80-10m. A buddy uses a 50 uh choke on his
>hb YC-156, which is a 80-10m amp.
I have doubts about 50 microhenries being adequate for 80 m. Well, it
might be okay if you used a tremendous amount of bypass capacitance
but I'd prefer more inductance, less capacitance. A couple
questions: How much bypass capacitance does your buddy use, and how
much RF voltage is he willing to subject his power supply to? I'm
assuming his filter is a bank of electrolytic caps.
The best way to not have to sweat the h.v. power supply plate choke is
to use a balanced output network with the choke in series with the
center of the output network coil where the RF v. is already low.
More information about the Amps