Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Grid\s+Current\s+Advice\s*$/: 7 ]

Total 7 documents matching your query.

1. [Amps] Grid Current Advice (score: 1)
Author: "Keith Dutson" <kdutson@sbcglobal.net>
Date: Mon, 15 Aug 2005 21:22:29 -0500
What is the maximum recommended grid current for a pair of Eimac 3-500G tubes? Thanks. 73, Keith NM5G _______________________________________________ Amps mailing list Amps@contesting.com http://list
/archives//html/Amps/2005-08/msg00538.html (6,901 bytes)

2. Re: [Amps] Grid Current Advice (score: 1)
Author: R.Measures <r@somis.org>
Date: Mon, 15 Aug 2005 19:52:41 -0700
There is no max grid-I rating. The max rated grid dissipation is 20w, but several experimenters have found this to be somewhat conservative -- probably because the grid is made from Mo, which melts a
/archives//html/Amps/2005-08/msg00540.html (7,151 bytes)

3. Re: [Amps] Grid Current Advice (score: 1)
Author: "Steven Cook" <sccook1@cox.net>
Date: Mon, 15 Aug 2005 20:10:39 -0700
So if you are running AB2 at circa 3,000 volts on the plate, and let's say... 5 volts of zener bias, and 230 ma of grid current -- would be a little over 1 watt of grid dissipation. (.230 X 5 = 1.15
/archives//html/Amps/2005-08/msg00542.html (8,717 bytes)

4. Re: [Amps] Grid Current Advice (score: 1)
Author: R.Measures <r@somis.org>
Date: Mon, 15 Aug 2005 20:33:37 -0700
It's the AC grid to cathode potential, which is c. 80V-rms multiplied by 0.23A. Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Amps mailing lis
/archives//html/Amps/2005-08/msg00543.html (8,923 bytes)

5. Re: [Amps] Grid Current Advice (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Tue, 16 Aug 2005 00:09:53 -0700
If you assume an input impedance of 58 ohms (115 ohms/tube divided by 2 for the pair) and 100 watts of drive power, that works out to around 76 volts RMS grid-to-cathode potential. With a 40W maximum
/archives//html/Amps/2005-08/msg00545.html (9,437 bytes)

6. Re: [Amps] Grid Current Advice (score: 1)
Author: "Phil Clements" <philc@texascellnet.com>
Date: Tue, 16 Aug 2005 02:32:10 -0500
Rich is correct, as usual. Something typical for a pair of 3-500Z's outputting 1700 watts or so would be 230 ma or so, or 115 ma per tube. (((73))) Phil, K5PC _______________________________________
/archives//html/Amps/2005-08/msg00546.html (7,844 bytes)

7. Re: [Amps] Grid Current Advice (score: 1)
Author: "Keith Dutson" <kdutson@sbcglobal.net>
Date: Tue, 16 Aug 2005 08:19:37 -0500
This sounds correct. They are putting out about 1500 watts at 300ma. Bumping to 400ma yields 1700+ watts delivered, but this is really pushing them hard. The almost instantaneous increase in ambient
/archives//html/Amps/2005-08/msg00550.html (9,763 bytes)

Current List: 1 - 7
Page: [1]
This search system is powered by Namazu