Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+A\s+Grounded\s+Grid\s+biasing\s+question\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+A\s+Grounded\s+Grid\s+biasing\s+question\s*$/: 6 ]

Total 6 documents matching your query.

1. [Amps] A Grounded Grid biasing question (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Wed, 9 Jul 2008 09:44:43 -0700 (PDT); Has anyone ever seen a design wherein an 8877, or similar triode, operated in grounded grid has the bias generator placed in the grid return line, rather than in the typical cathode (grid + cathode c; /archives//html/Amps/2008-07/msg00084.html (7,379 bytes)
2. Re: [Amps] A Grounded Grid biasing question (score: 1): Author: TexasRF@aol.com; Date: Wed, 9 Jul 2008 13:08:45 EDT; Marv, I have used this method in several grounded grid tetrode amplifiers with excellent results. There is an added advantage that a big diode can be placed from B- (cathode) and ground to snub any b; /archives//html/Amps/2008-07/msg00086.html (8,540 bytes)
3. Re: [Amps] A Grounded Grid biasing question (score: 1): Author: "Alex" <alexeban@gmail.com>; Date: Wed, 9 Jul 2008 21:08:36 +0300; ...you misunderstood the schematic: the bias generator is supplying bias just to the 2 opamps in order to set the trip reference. The tube is controlled by the IRF 540 as a two state switch only, mov; /archives//html/Amps/2008-07/msg00089.html (9,512 bytes)
4. Re: [Amps] A Grounded Grid biasing question (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Wed, 9 Jul 2008 20:39:41 +0200; A negative voltage source will not work for biasing at the cathode, it will do the opposite. I see the necessary (preadjusted) positive voltage reaches the cathode when the IRF540 switches through. 7; /archives//html/Amps/2008-07/msg00091.html (10,231 bytes)
5. Re: [Amps] A Grounded Grid biasing question (score: 1): Author: "Alex" <alexeban@gmail.com>; Date: Thu, 10 Jul 2008 07:31:16 +0300; ...noooo, it doesn't: the source of the FET is connected to the -HV point through the 0.1 resistor! This is where it goes when the FET turns on. The FET is just replaces the usual Operate/ Standby sw; /archives//html/Amps/2008-07/msg00094.html (11,652 bytes)
6. Re: [Amps] A Grounded Grid biasing question (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Thu, 10 Jul 2008 07:19:31 +0200; Yes, that works as well with the grid lifted, but it´s much better to have it tight RF grounded and supply positive voltage to the cathode, which is done on that circuitry The positive bias voltage i; /archives//html/Amps/2008-07/msg00095.html (12,598 bytes)

Current List: 1 - 6
Page: [1]