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Total 9 documents matching your query.

1. [AMPS] Safety resistor (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Mon, 11 Oct 1999 11:09:17 -0700; In the common circuit used for GG triode amplifiers that separates the B- from ground in order to allow for convenient plate and grid current metering, there is a 'safety resistor' from B- to ground.; /archives//html/Amps/1999-10/msg00377.html (8,048 bytes)
2. [AMPS] Safety resistor (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 11 Oct 1999 13:27:36 -0700; ? Destructive surge current, provided that the resistor is installed where it belongs. ? This resistor belongs in the positive side of the hv supply, not the negative. When the glitch resistor is in; /archives//html/Amps/1999-10/msg00379.html (8,657 bytes)
3. [AMPS] Safety resistor (score: 1): Author: rakefet@rakefet.com (Vic Rosenthal); Date: Mon, 11 Oct 1999 13:31:20 -0700; No, Rich, I'm not referring to the glitch resistor. I know that goes in series with the plate supply. I am asking about the one that goes from the negative power supply output to ground. 73, Vic, K2V; /archives//html/Amps/1999-10/msg00380.html (9,118 bytes)
4. [AMPS] Safety resistor (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 11 Oct 1999 20:00:38 +0100; The resistor is there to keep the B-minus rail somewhere close to ground (chassis) potential, even if the high voltage supply is operated separately from the rest of the amplifier. Without it, the wh; /archives//html/Amps/1999-10/msg00382.html (9,620 bytes)
5. [AMPS] Safety resistor (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 11 Oct 1999 15:14:26 -0700; from there requires Only if one inadvertently forgets to connect the grid-current meter shunt R between gnd and the positive side of the anode-current meter shunt. - Rich..., 805.386.3734, www.vcnet; /archives//html/Amps/1999-10/msg00386.html (8,822 bytes)
6. [AMPS] Safety resistor (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 11 Oct 1999 15:14:24 -0700; This is the grid current meter shunt resistor. It must have glitch diodes across it to protect it from hv to gnd arcs so it can not be a "safety" device. Typical values are around 1-ohm. - Rich...,; /archives//html/Amps/1999-10/msg00387.html (9,622 bytes)
7. [AMPS] Safety resistor (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Mon, 11 Oct 1999 19:25:55 -0500; I think Vic is asking about the resistor that goes from the bottom of a diode bridge in the P.S. to chassis ground. This raises B- a few volts above ground so you can measure Ig and Ip in the B negit; /archives//html/Amps/1999-10/msg00388.html (10,624 bytes)
8. [AMPS] Safety resistor (score: 1): Author: measures@vcnet.com (measures); Date: Mon, 11 Oct 1999 19:39:06 -0700; Agreed Ig, yes. However, even if the cathode were grounded, anode-current would be metered by connecting the anode-current meter shunt between gnd and hv negative. - Rich..., 805.386.3734, www.vcnet; /archives//html/Amps/1999-10/msg00391.html (7,811 bytes)
9. [AMPS] Safety resistor (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 12 Oct 1999 06:33:59 +0100; Exactly! Nothing to argue about, then. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.demon.co.uk/g3sek -- FAQ on WWW: http://www.contest; /archives//html/Amps/1999-10/msg00394.html (7,906 bytes)

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