[Boatanchors] Carbon Comp V ratings

Bill Cromwell wrcromwell at gmail.com
Wed Feb 14 21:15:02 EST 2018


That parasitic surpessor is not across the B+ supply to ground. It is in 
series in the plate circuit so 1200 volts B+ on one side and um...pretty 
darn close to 1200 volts on the other end. Just keep the golden 
screwdriver clear of it ;)

73,

Bill  KU8H

On 02/14/2018 07:44 PM, Rob Atkinson wrote:
> I don't recall ever hearing of v. being a concern with parasitic
> suppressors.  Why not use whatever resistor you want and wind a new
> coil on it?
>
>
> Rob
> K5UJ
>
> On Wed, Feb 14, 2018 at 3:32 PM, Barry Pfeil <barrypfeil at gmail.com> wrote:
>> Digging into a Viking Adventurer here and found many of the carbon comp
>> resistors high by 30-300%.  As I look at ordering replacements it seems
>> standard voltage ratings for these things are only 350V, at least for the
>> 1/2 W jobs.  But 1/2 W is all that will fit inside the parasitic chokes on
>> the 807 plate and grid where I believe they will see lots more than 350V.
>> Thoughts?  Sources?
>>
>>
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Gary Harmon, K5JWK
> ** For Assistance: gharmon at idworld.net **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

-- 
bark less - wag more


More information about the Boatanchors mailing list