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References: [ +from:phil@vaxxine.com: 282 ]

Total 282 documents matching your query.

241. [AMPS] Sheet Metal bending brakes (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Sat, 13 Mar 1999 10:34:13
A while back someone asked about sheet metal brakes. Home/hobby size brakes are available from BAC Industries in Minneapolis, MN. I saw all 3 of their models at Princess Auto, which is a chain of sto
/archives//html/Amps/1999-03/msg00270.html (7,753 bytes)

242. [AMPS] Ripple Current etc in FWD circuits (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Sun, 14 Mar 1999 11:52:02
Carl, it appears that you're absolutely correct about this. The caps in this circuit do charge at 60 Hz, but the overall ripple current is still 120 Hz. I got curious about the comment on extra cap s
/archives//html/Amps/1999-03/msg00283.html (11,567 bytes)

243. [AMPS] Re:3D22 (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Wed, 17 Mar 1999 11:41:57
Made by RCA Heater : 6.3V @ 2.6 amps PIV : 1350 volts Max forward voltage : 650 Max cathode current : 6amps Grid voltage : - 200 volts Grid current : 5 ma Basing diagram indicates its a tetrode, but
/archives//html/Amps/1999-03/msg00378.html (7,240 bytes)

244. [AMPS] frozen beer (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Thu, 18 Mar 1999 09:09:59
Hear, hear. 60 deg F british beer beats ice cold Canadian or US beer by a mile. We've had an influx of UK style pubs here over the last few years and they mostly serve warm beer (I've become an "exp
/archives//html/Amps/1999-03/msg00405.html (10,033 bytes)

245. [AMPS] SB-220 resistor (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Thu, 18 Mar 1999 12:07:42
I don't know the SB-220 at all so I don't know where the subject resistor is in the circuit. But if a 0.82 ohm 2W metal film resistor was taken out by an event, there must have been greater than 2.5
/archives//html/Amps/1999-03/msg00423.html (9,947 bytes)

246. [AMPS] Ryker may have caused the SB-220 failure (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Thu, 18 Mar 1999 12:26:42
If this amp was in the same room as a TV, and if Star Trek was on at the time, and if Commander Ryker had ordered the launch of a Photon Torpedoe just before the amp went bang, then I suspect stray p
/archives//html/Amps/1999-03/msg00428.html (9,402 bytes)

247. [AMPS] TEST ignore (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Sat, 20 Mar 1999 21:14:55
test -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://www.
/archives//html/Amps/1999-03/msg00516.html (6,370 bytes)

248. [AMPS] Solid State Relays/soft start (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Sun, 21 Mar 1999 20:18:49
A review of the Newark and Electrosonic catalogs reveals a smorgasboard of solid state relays. For simple power-on/power-off there are plenty of choices that will easily handle the up to 20-25 amps o
/archives//html/Amps/1999-03/msg00534.html (10,312 bytes)

249. [AMPS] High watt Zeners ! (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Sun, 21 Mar 1999 21:02:34
After my last post about SSRs, I found that Crydom has a website (www.crydom.com ). SSR data sheets in pdf format are availabale there. But, I looked at their Transient Voltage Supressor page and fou
/archives//html/Amps/1999-03/msg00535.html (7,161 bytes)

250. [AMPS] Unitrode & Microsemi PIN diodes (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Mon, 22 Mar 1999 09:32:54
And they (MicroSemi) have a white paper on using PIN diodes for RF T/R switching at the 1500 watt level. -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administ
/archives//html/Amps/1999-03/msg00547.html (7,969 bytes)

251. [AMPS] Solid state relays and HV fusing (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Tue, 23 Mar 1999 10:22:58
Yea I agree. But I don't think mechanical relays on the mains are any better at this either. I haven't looked at make/release times for the usual clunky mechanical units but I don't think they're no
/archives//html/Amps/1999-03/msg00578.html (8,329 bytes)

252. [AMPS] Cathode Impedance Measurements (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Tue, 30 Mar 1999 23:10:16
Don't overlook some of the handheld LCR meters on the market. They're surprisingly accurate for this kind of work. They don't quite live up to a lab grade unit from GR or HP, but they're still prett
/archives//html/Amps/1999-03/msg00706.html (8,732 bytes)

253. [AMPS] duplicate copies (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Mon, 01 Feb 1999 09:21:21
Yep, now that you mention it, that is about when it started. Phil -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contestin
/archives//html/Amps/1999-02/msg00014.html (7,577 bytes)

254. [AMPS] FW: Mail failure (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Mon, 01 Feb 1999 09:22:41
No idea Mike, but that's exactly the same one I'm getting too. Phil To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requ
/archives//html/Amps/1999-02/msg00015.html (12,817 bytes)

255. [AMPS] Silver Plating (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Tue, 02 Feb 1999 19:57:20
To all that were interested in the 'how to silver plate' discussion we had here about a month ago, hang-on a little longer. I'm almost finished collecting information. The 'how-to" part is very easy.
/archives//html/Amps/1999-02/msg00084.html (6,730 bytes)

256. [AMPS] Cantenna Dummy loads (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Wed, 03 Feb 1999 19:10:49
Bill, you could put the Cantenna on a magnetic stirrer, with the spinner in the bottom of the Cantenna can. This would circulate the oil and enable longer periods of full power operation. Since you a
/archives//html/Amps/1999-02/msg00120.html (9,887 bytes)

257. [AMPS] RE: 4-1000A input Z (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Wed, 03 Feb 1999 20:27:34
Gents, Most of the old articles on the 4-1000 in G-G, and Eimac's own newsletter on tetrodes in G-G, indicate that the cathode driving impedance of the 4-1000 is around 110 ohms (104 - 110 ohms with
/archives//html/Amps/1999-02/msg00124.html (12,522 bytes)

258. [AMPS] TEST (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Thu, 04 Feb 1999 19:58:02
TESTING -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com Search: http://w
/archives//html/Amps/1999-02/msg00145.html (6,599 bytes)

259. [AMPS] Cantenna Dummy Loads (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Thu, 04 Feb 1999 18:21:47
If they're wire wound, they ain't non-inductive at RF (at AF maybe). Anyhow, the 1990 ARRL HB has a nice dummy load project. It uses a true RF non inductive resistor in 2 gallons of oil that will saf
/archives//html/Amps/1999-02/msg00147.html (9,710 bytes)

260. [AMPS] Fwd: Mail failure - HELP!!!! (score: 1)
Author: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Thu, 04 Feb 1999 18:07:34
Jon, we've ALL been getting these. This was subject of discussion here last week. To: <amps@contesting.com> To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions:
/archives//html/Amps/1999-02/msg00148.html (10,649 bytes)

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