>
>On Fri, 11 Jul 97 17:40:42 -0700 Rich Measures <measures@vc.net> writes:
>>snip...
>>> The correct choke rating is 100ma
>>
>>Not acording to the Heath parts list. #27ga. wire in a 100mA choke?
>
>The Heath chokes are #30 wire Rich, at least all the ones I have checked
>here.
As I recall, #30 copper wire has a fusing current rating of around 8A.
>I just dont like that resistor idea since it adds all those extra 1000pf
>caps into the equation.
So check it with a dipmeter. The difference in grid resonant frequency
between the original 600pF and 1600PF is quite small.
>If you want a resistor, why not just wind a 1 mh
>choke ... ...?
Because chokes have pesky resonances that resistors do not have, AND it
doesn't take 8A of grid-current to blow a 20 to 39 ohm 1/2w carbon film
resistor. .
>Guess I'll stick with what I'm comfortable with until I can be convinced
>otherwise. For sure, I will not directly ground the grids without some
>form of a fuse link or other protection. I have fixed too many AL-82,
>AL-80A, SB-1000 type amps to want to go that route.
Amen to that, Carl.
Rich---
R. L. Measures, 805-386-3734, AG6K
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