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1. [Amps] VTVM Diodes (score: 1): Author: "David C. Hallam" <dhallam@rapidsys.com>; Date: Mon, 15 May 2006 16:36:34 -0400; I am trying to find an AC probe for my HP-410C. I have a probe from a USM 116 VTVM. The 410C uses an EA53 diode in the probe and the 116 uses an EA52. From what I have found on the internet, these tw; /archives//html/Amps/2006-05/msg00102.html (7,002 bytes)
2. Re: [Amps] VTVM Diodes (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 12:33:16 -0400; David, The tube type differences could be the gain, or voltages, I'm not sure. The probes could possibly work, but those are the ones that used an acorn tube in the tip aren't they? Here's the bigges; /archives//html/Amps/2006-05/msg00113.html (8,914 bytes)
3. Re: [Amps] VTVM Diodes (score: 1): Author: "David C. Hallam" <dhallam@rapidsys.com>; Date: Tue, 16 May 2006 13:08:57 -0400; Will, I am not too worried about the calibration. I am not doing anything that requires traceability to any standard. It is just for my own use. I can calibrate the meter myself close enough for my u; /archives//html/Amps/2006-05/msg00117.html (10,361 bytes)
4. Re: [Amps] VTVM Diodes (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 13:17:44 -0400; Being a rectifer, it will most likely work since the pin out is the same along with the heater voltage. The tube you have to worry about is the ones used in the probes. It will throw it off, and coul; /archives//html/Amps/2006-05/msg00118.html (11,502 bytes)
5. Re: [Amps] VTVM Diodes (score: 1): Author: "David C. Hallam" <dhallam@rapidsys.com>; Date: Tue, 16 May 2006 13:51:54 -0400; Will, These tubes are the one used in the tip of the AC probe. HP used the EA53 or 2-01C diode in the probe for the 410B. They had different filament voltages and the meter had an adjustment to chang; /archives//html/Amps/2006-05/msg00119.html (12,242 bytes)
6. Re: [Amps] VTVM Diodes (score: 1): Author: Karl-Arne Markström <sm0aom@telia.com>; Date: Tue, 16 May 2006 20:01:20 +0200; The internal circuitry of the HP410C and the USM-116 AC probe looks practically identical. Also, the filament current of both the EA52 and the EA53 is the same, 300 mA. It would most probably not be; /archives//html/Amps/2006-05/msg00120.html (12,888 bytes)
7. Re: [Amps] VTVM Diodes (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 14:02:28 -0400; David, I looked in a few tube books I had and didn't see the tubes. I'll look in a few more to see what I find. I'd about bet they're the same, just a newer version tube. I'll let you know what I fin; /archives//html/Amps/2006-05/msg00121.html (13,674 bytes)
8. Re: [Amps] VTVM diodes (score: 1): Author: Dave Haupt <emailw8nf@yahoo.com>; Date: Tue, 16 May 2006 13:41:35 -0700 (PDT); EA52 and EA53 both have online data sheets here: http://tubedata.tigahost.com/tubedata/sheetsE.html Just a simple Google search - the web's a wonderful thing. Here's the hint: anything you want a spe; /archives//html/Amps/2006-05/msg00137.html (7,968 bytes)
9. Re: [Amps] VTVM diodes (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 16:51:03 -0400; Dave, I never thought about putting .pdf in the search. I have done that with .jpg, etc but never thought of that one. It's odd where some of us are still to used to grabbing a book and not using the; /archives//html/Amps/2006-05/msg00138.html (8,834 bytes)
10. Re: [Amps] VTVM diodes (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 17:01:17 -0400; The difference between the EA52 and EA53 is one has wire leads for the heater and one has a coaxial type body to plug in. The EA52 has the wire leads. The tubes themselves are the same electrical wis; /archives//html/Amps/2006-05/msg00140.html (9,249 bytes)
11. Re: [Amps] VTVM diodes (score: 1): Author: Colin Lamb <k7fm@teleport.com>; Date: Tue, 16 May 2006 14:04:23 -0700 (GMT-07:00); I am so glad some 9 year old kid did not tell me. Colin K7FM _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-05/msg00141.html (8,156 bytes)
12. Re: [Amps] VTVM diodes (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Tue, 16 May 2006 17:07:18 -0400; Yup, That would be most embarrasing! Best, Will ** REPLY SEPARATOR ** _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinf; /archives//html/Amps/2006-05/msg00143.html (8,486 bytes)

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