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Total 9 documents matching your query.

1. [Amps] Plate modulator xmfr ? (score: 1): Author: StephenTetorka@cs.com; Date: Sun, 10 Oct 2004 08:11:11 EDT; Hi all: I need to better understand the workings of a plate modulator for AM. Considering the RF amp with 2 x 813's and the modulator with 2 x 813's - what are the equations and math to work out the; /archives//html/Amps/2004-10/msg00127.html (6,733 bytes)
2. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: Karl-Arne Markström <sm0aom@telia.com>; Date: Sun, 10 Oct 2004 16:00:04 +0200; Hello Stephen, The use of 813's for both the class AB modulator and class C RF amplifier is a quite wise move, as it simplifies the power supply considerations a lot. A worked example, assuming the u; /archives//html/Amps/2004-10/msg00130.html (12,039 bytes)
3. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: Vic Rosenthal <vic@rakefet.com>; Date: Sun, 10 Oct 2004 07:45:58 -0700; StephenTetorka@cs.com wrote: Hi all: I need to better understand the workings of a plate modulator for AM. Considering the RF amp with 2 x 813's and the modulator with 2 x 813's - what are the equati; /archives//html/Amps/2004-10/msg00131.html (7,287 bytes)
4. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: R.Measures <r@somis.org>; Date: Sun, 10 Oct 2004 10:23:43 -0700; On Oct 10, 2004, at 5:11 AM, StephenTetorka@cs.com wrote: Hi all: I need to better understand the workings of a plate modulator for AM. Considering the RF amp with 2 x 813's and the modulator with 2; /archives//html/Amps/2004-10/msg00135.html (10,974 bytes)
5. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: R.Measures <r@somis.org>; Date: Sun, 10 Oct 2004 10:26:55 -0700; On Oct 10, 2004, at 7:45 AM, Vic Rosenthal wrote: StephenTetorka@cs.com wrote: Hi all: I need to better understand the workings of a plate modulator for AM. Considering the RF amp with 2 x 813's and; /archives//html/Amps/2004-10/msg00136.html (8,247 bytes)
6. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: peter.chadwick@Zarlink.Com; Date: Mon, 11 Oct 2004 10:40:50 +0200; One point to bear in mind is that the secondary of the modulation transformer has a lot of DC in it, which means that you need more iron (and probably an air gap) to avoid the core being saturated by; /archives//html/Amps/2004-10/msg00140.html (8,510 bytes)
7. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: R.Measures <r@somis.org>; Date: Mon, 11 Oct 2004 03:53:37 -0700; On Oct 11, 2004, at 1:40 AM, peter.chadwick@Zarlink.Com wrote: One point to bear in mind is that the secondary of the modulation transformer has a lot of DC in it, which means that you need more iron; /archives//html/Amps/2004-10/msg00141.html (8,586 bytes)
8. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: peter.chadwick@Zarlink.Com; Date: Mon, 11 Oct 2004 13:08:50 +0200; I believe AM B/C xmtrs (if they're still being made with tubes!) tend to go for pulse width modulated type amplifiers for the modulation, and no transformers. Over here, the aithorities even intend t; /archives//html/Amps/2004-10/msg00142.html (8,021 bytes)
9. Re: [Amps] Plate modulator xmfr ? (score: 1): Author: Bill Fuqua <wlfuqu00@uky.edu>; Date: Mon, 11 Oct 2004 09:44:06 -0400; What formulas would you use? By the way, one reason to modulate the screen grid along with the plate is to make the tetrode tubes' plate impedance appear to be more like a triode than a tetrode. The; /archives//html/Amps/2004-10/msg00143.html (10,049 bytes)

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