[Amps] AMPS

[Ian White GM3SEK]

R L Measures wrote:
>
>On Jul 20, 2006, at 4:42 AM, Harold Mandel wrote:
>
>> The GM3SEK and WD7S Triode and Tetrode Controller boards,
>> when suitably integrated, when properly adjusted, serve to
>> protect tubes and power supplies in a much faster time frame
>> than fuses.
>
>Hal --- Does the GM3SEK / WD7S Triode Controller board for an 8877
>use a grid protect transistor rated at >50A?

Despite requests in the past, you have never provided a specific example 
of a  circuit that needs a "grid protect transistor rated at >50A".

The schematic of my grid-protection circuit is in the Triode Board user 
manual which is downloadable from the website. The only transistor in 
this circuit is a 2N2222 that senses a small fraction of the grid 
current, and can handle even extreme fault conditions.


-- 
73 from Ian GM3SEK         'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek