[AMPS] AL1500

[2]

>
>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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