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Total 26 documents matching your query.

1. [Amps] Arcing (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Thu Mar 6 10:10:17 2003; Almost everyone who knows anything in any depth about electronics and electric fields understands that sharp points and protrusions greatly increase voltage gradient, and reduce voltage breakdown be; /archives//html/Amps/2003-03/msg00256.html (8,848 bytes)
2. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Thu Mar 6 13:42:40 2003; - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00263.html (9,539 bytes)
3. [Amps] Arcing (score: 1): Author: wc6w at juno.com (Radio WC6W); Date: Thu Mar 6 23:19:34 2003; Hi Tom On Thu, 6 Mar 2003 10:09:16 -0500 "Tom Rauch" <w8ji@contesting.com> writes: <snip> It all sounded good until you got to here... even though it is way off topic and... I'm glad that someone rec; /archives//html/Amps/2003-03/msg00283.html (8,396 bytes)
4. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Fri Mar 7 05:14:28 2003; Indeed, Marv. I confirmed this with an oscilloscope. The primary V spike is generated by the collapsing field when battery current flow stops in the primary -- i.e., the ignition contact opening, in; /archives//html/Amps/2003-03/msg00290.html (10,246 bytes)
5. [Amps] Arcing (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Fri Mar 7 06:33:29 2003; Anyone checking a power transformer with a high-current ohmmeter knows this effect well. When you pull the meter leads, you are lucky of you don't blow the meter out or get knocked on your rear! Ford; /archives//html/Amps/2003-03/msg00292.html (8,903 bytes)
6. [Amps] Arcing (score: 1): Author: WD8JJA at arrl.net (Davis_R); Date: Fri Mar 7 06:55:51 2003; V = L dI/dT WD8JJA turns this blow essentially 40 As ratio release, has into period; /archives//html/Amps/2003-03/msg00294.html (9,924 bytes)
7. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Fri Mar 7 09:42:39 2003; Some folks know to short another winding when measuring a winding's DC-R. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00297.html (8,379 bytes)
8. [Amps] Arcing (score: 1): Author: K1LE at ARRL.NET (Jeffrey Madore); Date: Fri Mar 7 11:35:48 2003; Thanks, Rich & Marv, Great explanation! Fills in some missing holes in my memory and gives me something to think on. I once accidentally opened the secondary relaying circuit on a CT in a 4kv system; /archives//html/Amps/2003-03/msg00301.html (12,497 bytes)
9. [Amps] Arcing (score: 1): Author: wc6w at juno.com (Radio WC6W); Date: Fri Mar 7 12:20:52 2003; Hi, In this instance: V(Secondary) = -M * dI(Primary)/dt where M is the mutual inductance. 73, Marv WC6W * ________________________________________________________________ Sign Up for Juno Platinum I; /archives//html/Amps/2003-03/msg00302.html (8,101 bytes)
10. [Amps] Arcing (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Fri Mar 7 13:08:29 2003; a I This is a different situation than the flyback or energy storage situation I outlined Jeff, because it probably was a sinewave source causing a time-varying flux that did not result in an abrupt; /archives//html/Amps/2003-03/msg00305.html (9,154 bytes)
11. [Amps] Arcing (score: 1): Author: jimr.reid at verizon.net (Jim Reid); Date: Fri Mar 7 13:10:53 2003; Bingo!! From EE 101 . Or, the faster the current is stopped, the greater the resulting voltage across the inductor. 73, Jim KH7M; /archives//html/Amps/2003-03/msg00307.html (7,527 bytes)
12. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Fri Mar 7 13:15:14 2003; ** One of those cherished moments to remember .... - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00308.html (8,285 bytes)
13. [Amps] Arcing (score: 1): Author: gdaught6 at stanford.edu (gdaught6@stanford.edu); Date: Fri Mar 7 14:25:09 2003; It's really simple! Somebody already posted V=Ldi/dt and for those of us uncomfortable with calculus, in words it's "The voltage across an inductor is a product of the inductance and the rate of chan; /archives//html/Amps/2003-03/msg00311.html (8,260 bytes)
14. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Fri Mar 7 18:08:08 2003; ** it is my opinion that the counter-EMF spike can be many times the rated primary operating V. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00314.html (9,854 bytes)
15. [Amps] Arcing (score: 1): Author: wc6w at juno.com (Radio WC6W); Date: Fri Mar 7 19:33:35 2003; On Fri, 7 Mar 2003 13:07:30 -0500 "Tom Rauch" <w8ji@contesting.com> writes: knuckle on <snip> rather at a across Good afternoon Tom & the group, The same formula works for unterminated secondaries in; /archives//html/Amps/2003-03/msg00317.html (9,386 bytes)
16. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Sat Mar 8 06:20:57 2003; Tom Rauch: Me: When DC current abruptly stops, the potential for reverse potential is impressive. I've measured 400v-pk with an o'scope across 24vdc relay coils. I would like to hear Mr. Rauch's exp; /archives//html/Amps/2003-03/msg00321.html (9,024 bytes)
17. [Amps] Arcing (score: 1): Author: dj2001 at mn.rr.com (dj2001@mn.rr.com); Date: Sat Mar 8 06:58:07 2003; A thousand volts is a bit much, I've read up to 600 or 700 volts, depends on the size of the creature. Each of it's electrocytes generate .15 volt. Interesting fish huh. Dale J.; /archives//html/Amps/2003-03/msg00323.html (9,796 bytes)
18. [Amps] Arcing (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Sat Mar 8 07:13:16 2003; As I said before when it is a sinewave there is no transient or energy storage and release, unlike the case when something abruptly switches off allowing fields to collapse. But I'm sure you know th; /archives//html/Amps/2003-03/msg00325.html (7,891 bytes)
19. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Sat Mar 8 07:29:32 2003; Apples and oranges. The subject is sudden stops. Thus, operating V has nuttin to do with nuttin. The best bait is that which falls into one's lap. cheerz, Tom - R. L. Measures, a.k.a. Rich..., 805.3; /archives//html/Amps/2003-03/msg00327.html (7,785 bytes)
20. [Amps] Arcing (score: 1): Author: 2 at vc.net (rlm); Date: Sat Mar 8 07:46:30 2003; transformer On a PBS program I heard 1000V for big ones. They had a video of a crocodile (caiman) who accidently stepped on a big one while he was wading through some shallows looking for lunch. The; /archives//html/Amps/2003-03/msg00328.html (9,424 bytes)

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