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1. [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Hamilton Horta - PY2NI" <py2ni@terra.com.br>; Date: Wed, 26 Sep 2007 08:49:41 -0300; Hi everybody, is there any rule of thumb or whatever to determine the minimum amount of electrolitic caps should one put in a HV power supply? I am building a VHF PA with 1x GI-7B @ 2200V and another; /archives//html/Amps/2007-09/msg00324.html (8,716 bytes)
2. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Wed, 26 Sep 2007 08:30:54 -0400; Yes but you need to know the current along with the voltage and have some idea of the transformer equivalent secondary resistance. 73 Tom _______________________________________________ Amps mailing; /archives//html/Amps/2007-09/msg00325.html (8,845 bytes)
3. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Peter Frenning [OZ1PIF]" <peter@frenning.dk>; Date: Wed, 26 Sep 2007 15:35:34 +0200; Hamilton Horta - PY2NI skrev: Hi Horta, It's mostly a question of availability of suitable Caps. A well suited common type is 450V/220uF, you could get by with 6 in series, but that is cutting it ver; /archives//html/Amps/2007-09/msg00329.html (10,217 bytes)
4. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Hamilton Horta - PY2NI" <py2ni@terra.com.br>; Date: Wed, 26 Sep 2007 11:12:28 -0300; Thanks a lot Peter, these figures are very close to what I thought, actually I was tempted to try (not in a definitive way but just run some tests) with something around 6,7uF (7x 47uF in parallel) b; /archives//html/Amps/2007-09/msg00330.html (11,959 bytes)
5. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Peter Frenning [OZ1PIF]" <peter@frenning.dk>; Date: Wed, 26 Sep 2007 16:37:01 +0200; Hamilton Horta - PY2NI skrev: You can see how I,ve done it here: http://www.frenning.dk/OZ1PIF_HOMEPAGE/FL2000-QB.htm -- Vy 73 de OZ1PIF/5Q2M, Peter ** CW: Who? Me? You must be joking!! ** email: pet; /archives//html/Amps/2007-09/msg00333.html (9,550 bytes)
6. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Wed, 26 Sep 2007 11:52:26 -0400; Actually the ESR of the AC source, the load resistance, and the rectifier type determine the ripple and dynamic regulation. In short form: The higher the transformer ESR (equivalent secondary resist; /archives//html/Amps/2007-09/msg00337.html (10,000 bytes)
7. [Amps] How much electrolitic for a HV supply ? (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Thu, 27 Sep 2007 05:55:02 +0200 (CEST); the rectifier type determine the ripple and dynamic regulation.< But is the requirement ripple reduction, or the ability of the HV supply to hold up for short peaks? The capacitor releases 0.5 .C.Ve2; /archives//html/Amps/2007-09/msg00358.html (7,443 bytes)
8. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 27 Sep 2007 08:05:57 -0400; If the supply is that loose, you better use a battery. The problem isn't only a 50mS time constant for the lowest speech tones, the problem is a cycle per second time constant for the syllabic ampli; /archives//html/Amps/2007-09/msg00379.html (8,656 bytes)
9. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Thu, 27 Sep 2007 09:10:13 -0400; RCA went as far as specifying PS C in their spec sheet for the 8122 family. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com; /archives//html/Amps/2007-09/msg00386.html (9,564 bytes)
10. Re: [Amps] How much electrolitic for a HV supply ? (score: 1): Author: Manfred Mornhinweg <mmornhin@gmx.net>; Date: Thu, 27 Sep 2007 13:54:40 +0000; Hi Horta and all, I will chirp in even if it seems rather late in the thread. Don't forget the very definition for the unit of capacitance: One Farad is the capacitance that will change the voltage o; /archives//html/Amps/2007-09/msg00399.html (8,088 bytes)

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