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101. Re: [Amps] [TowerTalk] Are All Low-Pass Filters Alike? - (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 Aug 2005 16:59:15 -0400; All a low pass filter is capable of is passing the frequencies before the cutoff frequency and rejecting the ones after it. This kills any interference from the 2nd, 3rd, harmonincs to the higher fre; /archives//html/Amps/2005-08/msg00552.html (10,084 bytes)
102. [Amps] Sierra Electronics 5kW load/meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 17 Aug 2005 13:36:14 -0400; All, I just won a rackmount, 5kW termination load, with peak reading wattmeter off ebay. The load was made by Sierra Electronics, division of Philco. The model is a 400A-Z. I'm now looking for a manu; /archives//html/Amps/2005-08/msg00563.html (7,509 bytes)
103. Re: [Amps] [BULK] - Sierra Electronics 5kW load/meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 17 Aug 2005 14:44:11 -0400; Steve, I was thinking it more than likely was measuring the RF voltage on the load instead of a caloriometer. I have a 1.5 kW meter/load here from B&W that does that. They then just rectify the RF wi; /archives//html/Amps/2005-08/msg00569.html (10,997 bytes)
104. Re: [Amps] Sierra Electronics 5kW load/meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 17 Aug 2005 14:51:42 -0400; Keith, That could have a couple of resistors that size in it as I'm familiar with the Palstar load. The cabinet is about 4" high, and a good bit deep so it may have two large or say 4 smaller ones in; /archives//html/Amps/2005-08/msg00570.html (10,071 bytes)
105. Re: [Amps] [BULK] - Sierra Electronics 5kW load/meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 17 Aug 2005 15:10:07 -0400; Karl-Arne, If it were, it would be ok as this would become a neet project to convert over to say a 1-1.5 kW load that was air cooled. Say maybe with a 1 minute max rating or so. Then by changing it t; /archives//html/Amps/2005-08/msg00574.html (13,205 bytes)
106. Re: [Amps] Sierra Electronics 5kW load/meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 17 Aug 2005 15:14:18 -0400; Keith, No, I didn't mean the Palstar was 4 inches high, the Sierra one is about that and a rack cabinet type. The Palstar has a higher cabinet as you say. The two resistors are about 2" O.D., and abo; /archives//html/Amps/2005-08/msg00575.html (12,898 bytes)
107. Re: [Amps] [BULK] - Re: [BULK] - Sierra Electronics 5kW load/met er (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Wed, 17 Aug 2005 15:23:16 -0400; Steve, Same here as I don't know either. If it's too weak of a load, it might become a good weekend project to upgrade the load a little. Without seeing its innards, one can't say much. I was hoping; /archives//html/Amps/2005-08/msg00576.html (14,857 bytes)
108. Re: [Amps] Sierra Electronics 5kW load/meter (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Thu, 18 Aug 2005 09:08:28 -0400; Dave, That's ok as no more than I have in it, I'll rip out the small load resistor and replace it with a load bank that will fit in the cabinet. The peak power meter and rack cabinet was worth the $9; /archives//html/Amps/2005-08/msg00591.html (8,640 bytes)
109. [Amps] BK Precision Test Equipment (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Thu, 18 Aug 2005 15:47:10 -0400; All, I've had a few e-mails with questions about when I would be doing the service work for BK Precision test equipment. Right now, My contract will begin around Feburary 2006. Starting this October,; /archives//html/Amps/2005-08/msg00598.html (7,669 bytes)
110. Re: [Amps] BK Precision Test Equipment (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Thu, 18 Aug 2005 17:59:23 -0400; David, Yea, I don't like the part they have their either on copyrights. However, ones storing them, or giving them away, I've never seen anything said. Even on ebay, they sell used manuals, and some; /archives//html/Amps/2005-08/msg00600.html (14,695 bytes)
111. Re: [Amps] caps SB200 (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 20 Aug 2005 12:13:20 -0400; Neal, Is the new caps in the 220 the correct size? The caps helps with regulation and if too small in value might possibly cause this. Seems to me like the regulation on a 220 was about 15% if I reme; /archives//html/Amps/2005-08/msg00615.html (10,024 bytes)
112. Re: [Amps] caps SB200 (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 20 Aug 2005 13:32:18 -0400; Steves correct. Dont trust the meter on the amp, always check the HV with a HV meter. I have two Simpson meters I use for this, a 260 and 467 which have HV probes. If it still shows low, see the firs; /archives//html/Amps/2005-08/msg00617.html (9,221 bytes)
113. Re: [Amps] caps SB200 (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 20 Aug 2005 15:10:21 -0400; Bob, That resistor is really high resistance. Did you check it with an ohmmeter on the correct resistance? You may need to use a VTVM to read this high of a resistance. On a Simpson 260, the meter is; /archives//html/Amps/2005-08/msg00619.html (10,142 bytes)
114. Re: [Amps] caps SB-200, now HV probe. (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 20 Aug 2005 15:31:10 -0400; Roy, You mis-understood the post. This was about how to determine the correct resistance of a HV probe for Bob, and had nothing to do with the SB220 problem. I guess I should have changed the subject; /archives//html/Amps/2005-08/msg00621.html (8,177 bytes)
115. [Amps] Philco Book Set (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sat, 20 Aug 2005 16:59:27 -0400; All, I finally completed the set of six books by Philco-Ford named "Electronic and Electrical Fundamentals". These are an actual course and cover everything from electron theory to microwave. The las; /archives//html/Amps/2005-08/msg00622.html (7,496 bytes)
116. Re: [Amps] ps caps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 21 Aug 2005 19:27:18 -0400; Do what? They buy those like any other manufacturer by the case or how many they need. I'll guarantee they don't take the time to grab each capacitor and check it for capacitance, ESR, and leakage on; /archives//html/Amps/2005-08/msg00644.html (7,913 bytes)
117. Re: [Amps] ps caps (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 22 Aug 2005 12:51:09 -0400; Vic, Does that mean you believe in using equalizing resistors across the HV rectifiers also? Electrolytic capacitors actually have a semiconductor function to them. No other capacitor does though tha; /archives//html/Amps/2005-08/msg00660.html (11,909 bytes)
118. Re: [Amps] plate choke (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Thu, 25 Aug 2005 09:52:55 -0400; Tom, All you have to do is make sure it's not resonant on one of the operating bands. If it is, you can park that frequency somewhere else by adding or subtracting a few turns of wire. To check its r; /archives//html/Amps/2005-08/msg00670.html (10,779 bytes)
119. Re: [Amps] plate choke (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Thu, 25 Aug 2005 11:42:53 -0400; Tom, I should have added earlier that if the choke will work at the lowest frequency, it will on every other higher frequency, providing it isn't resonant at one of them. In other words, you design t; /archives//html/Amps/2005-08/msg00671.html (12,800 bytes)
120. Re: [Amps] plate choke (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Thu, 25 Aug 2005 11:55:35 -0400; See Below, ** REPLY SEPARATOR ** Most of the time in engineering, one tries to at least double the working value if possible. So one that would handle 1-1.2 amperes would be what to use. I've seen th; /archives//html/Amps/2005-08/msg00672.html (9,855 bytes)

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