>On Sat, 26 Apr 97 09:35:57 -0800 Rich Measures <firstname.lastname@example.org> writes:
>>I think Denny ought to get the Bandini Award for using disc ceramic
>>caps as tank circuit padders. "Roundfiling" Eimac's recommendations
>>to worth another sack.
>Poor Denny....always someone bitching. All he did was try and bring out
>an affordable product. After Heathkit I would wager that there are more
>Dentron/Amp Supply amps around than all the surviving companies combined.
>If that is true then Denny accomplished some good...along with his
According to Mr. Foote, he reportedly stiffed Eimac for major kilobucks.
Why did Denny send Eimac a prototype for evaluation if he placed more
value on Denny's evaluation than he placed on Eimac's?
>In the MLA -2500 he used all HEC RF doorknobs. In the LK series he went
>to Teflon dielectric discs......snip...
The LK-500 I repaired had garden-variety disc-ceramic capacitors with
titanium dioxide dielectric.
I initially tried using a bank of 9, paralleled 56pF 6000v disc
ceramic capacitors for the 80m load-padder in my first Class AB1
amplifier. The disc ceramic capacitors caught fire. I conducted some
bench tests. I discovered that with 1 ampere of RF, 6000v disc ceramic
capacitors typically exhibit substantial heating. The tank circulating
current in the amplifier was around 33 amperes. Oops. OTOH, it would
have made a nifty Rube Goldberg charcoal lighter for the barbeque, Carl.
R. L. Measures, 805-386-3734, AG6K
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