To: | <amps@contesting.com> |
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Subject: | [AMPS] AL1500 |
From: | Ian White, G3SEK" <g3sek@ifwtech.com (Ian White, G3SEK) |
Date: | Wed, 5 Dec 2001 12:41:02 +0000 |
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. -- 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.com/g3sek -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com |
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