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1. [Amps] Re: AB1 v. AB2 (score: 1): Author: mark@sandlabs.com (mark); Date: Sun, 1 Dec 2002 11:13:07 -0500; In professional designs, the Grid Bias is applyied through a tap on the secondary of the input tuned transformer. Mark in be drive To: <amps@contesting.com>; /archives//html/Amps/2002-12/msg00002.html (11,585 bytes)
2. [Amps] Re: AB1 v. AB2 (score: 1): Author: mark@sandlabs.com (mark); Date: Sun, 1 Dec 2002 14:22:40 -0500; The grid power supply is an integral part of a feedback loop that regulates the voltage to the optimum level and polarity for a particular class off operation. Mark; /archives//html/Amps/2002-12/msg00008.html (8,217 bytes)
3. [Amps] Not (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 4 Dec 2002 20:55:55 -0500; Not sure why being a CBer is such a stigma :) I have seen bad apples in every circle including this one but this does not make the entire segment bad :) Perhaps a CBer with a Chimney trigered this at; /archives//html/Amps/2002-12/msg00079.html (7,292 bytes)
4. [Amps] CBer?? (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 4 Dec 2002 21:08:21 -0500; Well, In contrast with Mr. FuQua, I am quite young... Only 24, you see ... However I had been able to acumulate 2 MS (Physics and EE) from MIT and one PhD (BioMaterials) from Pasteur France ... Acord; /archives//html/Amps/2002-12/msg00080.html (15,839 bytes)
5. [Amps] Interesting Wonder Plate Choke? (score: 1): Author: mark@sandlabs.com (mark); Date: Fri, 8 Nov 2002 08:19:29 -0500; Which of them ? Mark interest to Amp Builders. The claims for this choke include broaband coverage 1-60mhz with no resonances. It seems to be well rated at 2 amps @ 7kv. Anyone run a dipper over this; /archives//html/Amps/2002-11/msg00119.html (7,500 bytes)
6. [Amps] 4-400A Plate (score: 1): Author: mark@sandlabs.com (mark); Date: Mon, 11 Nov 2002 10:05:10 -0500; What is the use of the "glow" ??? Just wated energy :) Do you feel rich, Peter ? Mark tantalum shadow of loss. well,; /archives//html/Amps/2002-11/msg00174.html (9,209 bytes)
7. [Amps] 4-400A Plate (score: 1): Author: mark@sandlabs.com (mark); Date: Mon, 11 Nov 2002 11:07:12 -0500; I dought very much that the Anode is made of pure Tantalum, as this materiakl is veri brittle in this form. Also VERY expensive :) For more about Tantalum go to : http://www.tanb.org/ Most of the Tat; /archives//html/Amps/2002-11/msg00177.html (9,354 bytes)
8. [Amps] 6m (score: 1): Author: mark@sandlabs.com (mark); Date: Tue, 12 Nov 2002 13:59:00 -0500; .Any one selling a BIG 6m Amp? write to mark@sandlabs.com Mark; /archives//html/Amps/2002-11/msg00191.html (7,742 bytes)
9. [Amps] 6m (score: 1): Author: mark@sandlabs.com (mark); Date: Tue, 12 Nov 2002 22:09:54 -0500; I've got a pile of mail, spitting about the legality of a 4KW Amp. So you, as a group, will not get an unfortunate stroke, I need to remind you that I had no intention to use it, nor did I mention th; /archives//html/Amps/2002-11/msg00194.html (9,177 bytes)
10. [Amps] EIMAC Confusion (score: 1): Author: mark@sandlabs.com (mark); Date: Tue, 12 Nov 2002 22:18:48 -0500; In the EIMAC Technical Data for the 8877/3cx1500A7 is is stated in the ABSOLUTE Ratings the Plate Dissipation is 1500W. I take this as an ABSOLUTE MAX. However in the TYPICAL Operation at 88-108MHz U; /archives//html/Amps/2002-11/msg00195.html (8,039 bytes)
11. [Amps] EIMAC Confusion (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 07:44:51 -0500; Thank you all for the replies :) I am a Solid State kind'a guy. There, things are relatively simple. TOTAL DEVICE DISSIPATION (TDD) is DCV times DCI`. The ratio between TDD and OUTPUT POWER (OP) defi; /archives//html/Amps/2002-11/msg00199.html (9,500 bytes)
12. [Amps] EIMAC Confusion (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 09:22:30 -0500; You are right Steve ... What throws me of that there are power sources (filament & grid) which are significant some times (200... 400W) and are not tacken in acount ... In SS, the base/gate power is; /archives//html/Amps/2002-11/msg00201.html (8,796 bytes)
13. [Amps] Re: 8877 dissp (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 11:19:08 -0500; Right!. However, I feel that the term PLATE DISSIPATION is somewhat missleading as it refers only to the caloric content of the entire work. As we all know, the Plate is used to deliver the RF energy; /archives//html/Amps/2002-11/msg00210.html (10,858 bytes)
14. [Amps] Re: 8877 dissp (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 12:34:19 -0500; I am lost ... Call me slow but I think we are going in circles here ... The Plate deals with two virtual "loads", a RF load and a Caloric Load. It realy does not matter where the loads DISSIPATE (ie; /archives//html/Amps/2002-11/msg00213.html (9,892 bytes)
15. [Amps] Re: 8877 dissp (score: 1): Author: mark@sandlabs.com (mark); Date: Wed, 13 Nov 2002 17:10:32 -0500; Intersting John ... It is true that 8877 filament is not burning mutch energy, however the exercise is on a general note. For example, the AMP in discution will be part of a Flow Process that calls f; /archives//html/Amps/2002-11/msg00215.html (11,902 bytes)
16. [Amps] Hot Switching (score: 1): Author: mark@sandlabs.com (mark); Date: Fri, 15 Nov 2002 09:09:20 -0500; HS is possible if you detect the Zero Crossing of the Carrier and your switch can close under %5 of the Cycle time. With a SS switching system it is quite possible even at 30MHz Mark; /archives//html/Amps/2002-11/msg00245.html (8,779 bytes)
17. [Amps] PS Capacitors. (score: 1): Author: mark@sandlabs.com (mark); Date: Thu, 21 Nov 2002 12:12:33 -0500; I have foud a source for electrolitic Capacitors 330uF/450V 105 deg. C type MXR, made 18/12/2000. Price $11 ea. Write to mark@sandlabs.com; /archives//html/Amps/2002-11/msg00326.html (6,466 bytes)
18. [Amps] Solid state amp advice needed (score: 1): Author: mark@sandlabs.com (mark); Date: Mon, 25 Nov 2002 13:24:05 -0500; Vic, It has happend to us as well (MRF154) It boiled down that the Power supply lost it's regulation and when it recovered from a step current request it overshoot the MAX Colector Break Down Voltage; /archives//html/Amps/2002-11/msg00370.html (10,197 bytes)
19. Fw: [Amps] AB1 vs AB2 ??? (score: 1): Author: mark@sandlabs.com (mark); Date: Fri, 29 Nov 2002 22:55:50 -0500; /archives//html/Amps/2002-11/msg00409.html (7,110 bytes)

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