>
>2 wrote:
>>Whenever the anode potential is not substantially more positive {more
>>attractive} than the grid, most of the cathode current will go to the
>>grid. Thus, the transistor that that is used to stop the flow of
>>grid-I during a parasite should have a substantial current rating.
>>However, the transistor the designer typically selects has a 1 - 2
>>ampere rating. Thus, when the wolf comes to the door with 40 or so
>>amperes, the transistor shorts and does not interrupt the flow of grid
>>current in time.
>
>We're still waiting for a specific reference to the circuit that has
>this design flaw.
>
There is no one circuit that has this flaw. There are several. I have
never seen an 8877 grid-I-trip ckt that used a >2a transistor. If you
know of one, please enlighten.
>--
cheers, Ian
- R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
end
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