| To: | amps@contesting.com |
|---|---|
| Subject: | Re: [Amps] tube fils..again |
| From: | "Jerry Kaidor" <jerry@tr2.com> |
| Reply-to: | jerry@tr2.com |
| Date: | Sat, 16 Jun 2012 09:46:01 -0700 (PDT) |
| List-post: | <amps@contesting.com">mailto:amps@contesting.com> |
>
>
> I have a 1929 transmitter I built. I used dc on the filaments to reduce
> hum, and polarity switches each time I power up.
*** Not insurmountable. A dpdt relay driven by some kind of flipflop
could do that.
- Jerry
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