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1. [Amps] Plate transformer current unknown (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Fri, 29 Apr 2005 15:01:44 +0000; I would like to find out the current rating of a transformer. Primary voltage taps 0v-110v-115v-208v-230v and secondary taps 3450v-0v-3450v and secondary resistance of 53.5ohms from 0v to 3450v tap a; /archives//html/Amps/2005-04/msg00615.html (7,762 bytes)
2. Re: [Amps] Plate transformer current unknown (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Tue, 03 May 2005 12:05:06 +0000; I am unable to calculate anything to do with windings or core due to the fact it is in a metal case encapsulated in black epoxy. I discovered this after removing the lid. I'll say one thing, it's dar; /archives//html/Amps/2005-05/msg00020.html (11,083 bytes)
3. Re: [Amps] Plate transformer current unknown (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Fri, 06 May 2005 03:11:42 +0000; Thanks Gary, Will and all for answering my questions. You learn a thing or two everyday. Cheers Angelo >From: Gary Schafer <garyschafer@comcast.net> >Reply-To: garyschafer@comcast.net<; /archives//html/Amps/2005-05/msg00093.html (16,936 bytes)
4. [Amps] Pi or Pi-L (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Tue, 17 May 2005 02:21:11 +0000; Other than lower harmonic distortion, what is the benefit of going with a Pi-L tank? What is the typical efficiency of the two? Often a toroid is used for L2. Is the main reason to conserve space? Ch; /archives//html/Amps/2005-05/msg00201.html (6,850 bytes)
5. Re: [Amps] Need chimney material info (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 21 May 2005 02:37:43 +0000; >From: w2cqm@juno.com >To: Amps@contesting.com >Subject: [Amps] Need chimney material info >Date: Fri, 20 May 2005 22:15:06 -0400 > >It appears that silicon rubber is the m; /archives//html/Amps/2005-05/msg00227.html (8,709 bytes)
6. Re: [Amps] Need chimney material info (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 21 May 2005 02:54:18 +0000; http://www.globalrubber.com/sheet1.html >From: w2cqm@juno.com >To: Amps@contesting.com >Subject: [Amps] Need chimney material info >Date: Fri, 20 May 2005 22:15:06 -0400 > ; /archives//html/Amps/2005-05/msg00228.html (8,255 bytes)
7. Re: [Amps] Input Circuit (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 28 May 2005 16:45:56 +0000; If you decide on an input circuit take a look at Paul's wd7s. http://wd7s.home.att.net/TU-6B.htm _________________________________________________________________ Don't just Search. Find! http://sear; /archives//html/Amps/2005-05/msg00315.html (6,969 bytes)
8. [Amps] Plate choke resistance (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 06 Aug 2005 03:59:34 +0000; Hello, I noticed that most plate chokes are wound with very thin gauge wire and varying diameter. I assume that would make it quite resistive/lossy. Some are split and mounted at right angles. Is the; /archives//html/Amps/2005-08/msg00208.html (7,550 bytes)
9. Re: [Amps] Plate choke resistance (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 06 Aug 2005 23:54:10 +0000; I figured a split plate choke must be for decoupling. I will try out HAMCALC. The plate choke I have here is probably not rated for high current. It looks to be of a thread like conductor. 22 ga. mag; /archives//html/Amps/2005-08/msg00229.html (9,676 bytes)
10. Re: [Amps] Plate choke resistance (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sun, 07 Aug 2005 16:36:50 +0000; Perpendicular inductors for decoupling. I remeber this practice from designing passive crossovers. Higher frequency, much higher interaction though. __________________________________________________; /archives//html/Amps/2005-08/msg00241.html (8,247 bytes)
11. [Amps] Silver plating tank hardware (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Wed, 17 Aug 2005 04:09:49 +0000; What is the best way to silver plate tank components/hardware? Is it better to use copper or brass as strapping for a given application? Any suggested minimum thickness? Some silver plated tank compo; /archives//html/Amps/2005-08/msg00556.html (7,334 bytes)
12. Re: [Amps] Silver plating tank hardware (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Fri, 19 Aug 2005 16:18:13 +0000; <BLOCKQUOTE style='PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #A0C6E5 2px solid; MARGIN-RIGHT: 0px'><hr color=#A0C6E5 From: "; /archives//html/Amps/2005-08/msg00605.html (9,503 bytes)
13. [Amps] 4000PIV rectifier CR104 (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Mon, 29 Aug 2005 17:42:37 +0000; Anybody familiar with the RCA CR104 4000PIV rectifier. I am not getting any continuity either way. Six out of six NC. Just using a basic multimeter. VE3YN ____________________________________________; /archives//html/Amps/2005-08/msg00753.html (7,405 bytes)
14. Re: [Amps] 4000PIV rectifier CR104 (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Tue, 30 Aug 2005 01:15:51 +0000; It makes perfect sense. Tested with 1K resistor and all are fine. Roughly 5 - 5.2V drop. Thanks 73 _________________________________________________________________ Take advantage of powerful junk e-; /archives//html/Amps/2005-08/msg00758.html (7,551 bytes)
15. [Amps] Center Tapped Secondary Circuit (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Wed, 19 Oct 2005 13:24:53 +0000; On a center tapped secondary plate transformer I have here there's three 2200pF 6Kv ceramic disc caps in parallel = 6600pF that are in series with three series 1K resistors = 3K between the center ta; /archives//html/Amps/2005-10/msg00454.html (7,644 bytes)
16. Re: [Amps] Center Tapped Secondary Circuit (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Thu, 20 Oct 2005 15:32:05 +0000; What sort of transient would you expect at the secondary of a plate transformer? _________________________________________________________________ Take charge with a pop-up guard built on patented Mi; /archives//html/Amps/2005-10/msg00506.html (7,441 bytes)
17. Re: [Amps] Center Tapped Secondary Circuit (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Fri, 21 Oct 2005 14:08:47 +0000; I assume in the mid 60's MOV's were not as common or not available. It would make sense to prevent it before amplification. I was thinking it was a circuit that balances the secondary windings. Thank; /archives//html/Amps/2005-10/msg00515.html (8,140 bytes)
18. Re: [Amps] Center Tapped Secondary Circuit (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 22 Oct 2005 22:09:15 +0000; Point taken, Mo bigger is better. VE3YN _________________________________________________________________ Powerful Parental Controls Let your child discover the best the Internet has to offer. http:/; /archives//html/Amps/2005-10/msg00538.html (8,171 bytes)
19. Re: [Amps] WTB: AMP (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sun, 06 Nov 2005 21:21:29 +0000; Hello Daniel, You shuold have no problem finding a TL-922 for $800. In my opinion it's over priced. You could find a good SB-220 or L4B for much less. Amp Supply seems to be showing up used quite oft; /archives//html/Amps/2005-11/msg00079.html (7,051 bytes)
20. Re: [Amps] Henry 3kA Choke input Pwr Supply Overvoltage Query (score: 1): Author: "Angelo Karabetsos" <ve3yn@hotmail.com>; Date: Sat, 19 Nov 2005 13:22:07 +0000; Rich, What's the difference between a swinging choke and a non-swinging choke? VE3YN _________________________________________________________________ Take charge with a pop-up guard built on patente; /archives//html/Amps/2005-11/msg00337.html (9,103 bytes)

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