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381. Re: [Amps] MW Oven Transformer question (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 14:30:00 -0500; Gerald, My guess by seriesing two will drop the flux density in each to around 10 kilogauss as each will have 1/2 the line voltage across it. That's well below the bottom of the knee and in the linea; /archives//html/Amps/2006-03/msg00573.html (11,133 bytes)
382. Re: [Amps] MW Oven Transformer question (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 17:39:15 -0500; Tony, To be honest, I forgot about those welds. If the welds are close to the ends of the core it wont be so bad as the flux will have already started to bend down into the legs. What the welds do is; /archives//html/Amps/2006-03/msg00576.html (14,383 bytes)
383. Re: [Amps] RE : MW Oven Transformer question (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 18:08:14 -0500; Jos, A man could put to in a container and pot them but heat don't escape that easily this way I don't think. Some say potting makes them cooler by making it like a heatsink. However, in calculating; /archives//html/Amps/2006-03/msg00577.html (13,765 bytes)
384. [Amps] Quick question (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 19:32:20 -0500; I bought an XO made by Vectron for the military. It's a 10 Mhz TTL output. I thought of using it as a frequency reference. Below is the specs on the tolerances, and what is your thoughts on how good; /archives//html/Amps/2006-03/msg00582.html (7,254 bytes)
385. Re: [Amps] Big transformer request TSPA (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 19:52:56 -0500; John, It's according to what type of rectifier circuit you'd use with the capacitor. For a full wave bridge and capacitor input, the secondary current is from 1.6 to 1.8 times the DC current. That va; /archives//html/Amps/2006-03/msg00585.html (9,205 bytes)
386. Re: [Amps] MW Oven Transformer question (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 20:07:30 -0500; What you have where a weld is across the lams is this. If we looked at the cross section of a lamination, the eddy currents would be in a circular pattern inside the area we're looking at though thin; /archives//html/Amps/2006-03/msg00586.html (11,201 bytes)
387. [Amps] LCR Meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 22:36:58 -0500; All, I may have a surplus LCR meter to sell. It's according to which one I like the best. I just bought an ESI 253 calibrated and got a deal on it at $95 as they generally sellf for $250-$400 used. A; /archives//html/Amps/2006-03/msg00587.html (7,490 bytes)
388. [Amps] ESI 253 (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 22:46:53 -0500; All, The seller I bought from has another he just e-mailed me about, same price and listed it on ebay. Below is the link for any interested. You'll have to get the lead set for it as it uses the 4-wi; /archives//html/Amps/2006-03/msg00588.html (6,933 bytes)
389. Re: [Amps] ESI 253 (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 21 Mar 2006 23:37:09 -0500; If you want to read up on this meter, the link to the manufacturer is below; http://www.tegam.com/html/lcr_meters.htm ESI changed names to Tegam. Best, Will ** REPLY SEPARATOR ** On 3/21/06 at 10:46; /archives//html/Amps/2006-03/msg00589.html (7,844 bytes)
390. Re: [Amps] RE : MW Oven Transformer question (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 22 Mar 2006 13:50:26 -0500; What they used to do on oil cooled transformers, is places some thin wood strips between each layer making a small windown that the oil could seep though. Of course using oil on a regular transformer; /archives//html/Amps/2006-03/msg00596.html (9,200 bytes)
391. Re: [Amps] more on heavy transformers TSPA (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 22 Mar 2006 13:58:37 -0500; John, See below; ** REPLY SEPARATOR ** That's a good reference. Actually, no. I've seen both formulas published for a full wave bridge. A full wave center tap is lower and is about 1 to 1.2 or so if; /archives//html/Amps/2006-03/msg00597.html (10,980 bytes)
392. Re: [Amps] CD Cap (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 24 Mar 2006 01:09:55 -0500; Ian, With the med that my doc has me on, I'll be working the midnight shift for some time it looks like, hi hi! Best, Will ** REPLY SEPARATOR ** On 3/24/06 at 12:33 AM Ian White GM3SEK wrote: _______; /archives//html/Amps/2006-03/msg00632.html (10,313 bytes)
393. Re: [Amps] CD Cap (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 24 Mar 2006 12:57:40 -0500; Rich, The main thing for any transformer is power in = power out, this in watts or VA. That is minus the losses which is the efficiency. Each rectifier/filter circuit has its own formula to determine; /archives//html/Amps/2006-03/msg00640.html (9,573 bytes)
394. Re: [Amps] Help Please: Power Amplifiers @ 100MHz (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 24 Mar 2006 13:54:00 -0500; Manish, See below; ** REPLY SEPARATOR ** You mean the coupling caps for RF in and RF out? Or using them as a voltage block? If so, you only need a few pF to achieve this at that frequency I'd say. __; /archives//html/Amps/2006-03/msg00643.html (7,943 bytes)
395. [Amps] I gotta tell this (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 24 Mar 2006 18:13:14 -0500; All, This is way off topic, but I have to tell it. I was in the market for a new Army jacket, a M-65 to be honest, and an olive drab one as I hate camo. Some on here will know the one I'm talking abo; /archives//html/Amps/2006-03/msg00651.html (8,070 bytes)
396. Re: [Amps] I gotta tell this (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Fri, 24 Mar 2006 18:27:51 -0500; Perry, My ex tried to loose mine too, and had to hide it where she couldn't readily find it. A lot of the time, I kept it in my truck. This one finally needs to be retired though, it done its duty. B; /archives//html/Amps/2006-03/msg00653.html (9,198 bytes)
397. Re: [Amps] I gotta tell this (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 25 Mar 2006 10:21:29 -0500; ** REPLY SEPARATOR ** Only one misspelled word in the whole thing, I must be slipping. ridiculous? We in class? _______________________________________________ Amps mailing list Amps@contesting.com h; /archives//html/Amps/2006-03/msg00660.html (9,382 bytes)
398. [Amps] Tek Scope (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 25 Mar 2006 23:35:39 -0500; All, I finally broke down and bought a Tek 7633 ( 100 MHz DSO ) with the plug-ins. I bought a 200 Mhz dual trace vertical amp plug-in to replace one 80 MHz one that's in it. I'm wondering if any have; /archives//html/Amps/2006-03/msg00670.html (6,988 bytes)
399. Re: [Amps] Tek Scope (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 26 Mar 2006 13:01:49 -0500; George, it has two 7A18 vertical amps, and one 7B53 time base as it is. I bought a 7A26 vertical to bring it up to its full potential of 100 MHz. The 7A18 is an 80 MHz vertical plug-in, and the 7A26; /archives//html/Amps/2006-03/msg00672.html (8,657 bytes)
400. Re: [Amps] Tek Scope (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 26 Mar 2006 19:21:29 -0500; George, I forgot to put the number of the digitizing plug-in, it's a 7D20. Below is some specs from a website about Tek scopes; Adds digital storage capability to TEK 7000 series mainframes. Fully GP; /archives//html/Amps/2006-03/msg00676.html (12,984 bytes)

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