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Total 9 documents matching your query.

1. [CQ-Contest] Power Inverters (score: 1): Author: tgeorgen@lsil.com (Georgens, Tom); Date: Mon Jan 8 17:02:07 2001; I am currently planning another contesting trip to the Caribbean and am giving some thought to a point I have neglected in the past, emergency power. I had a power outage during a WPX in KP2 one year; /archives//html/CQ-Contest/2001-01/msg00030.html (8,703 bytes)
2. [CQ-Contest] Power Inverters (score: 1): Author: k6ll@juno.com (Dave Hachadorian); Date: Mon Jan 8 17:12:52 2001; On Mon, 8 Jan 2001 17:02:07 -0600 "Georgens, Tom" <tgeorgen@lsil.com> writes: I bought a 300W unit on sale at Target for about $30. It produces a loud buzzing sound throughout the RF spectrum. I kept; /archives//html/CQ-Contest/2001-01/msg00031.html (8,215 bytes)
3. [CQ-Contest] Power Inverters (score: 1): Author: w7ti@jps.net (Bill Turner, W7TI); Date: Tue Jan 9 07:11:21 2001; f09FBQ905134 Sender: owner-cq-contest@contesting.com Precedence: bulk X-List-Info: http://www.contesting.com/FAQ/cq-contest X-Sponsor: W4AN, KM3T, N5KO & AD1C ________________________________________; /archives//html/CQ-Contest/2001-01/msg00040.html (8,496 bytes)
4. [CQ-Contest] Power Inverters (score: 1): Author: N5RP@pdq.net (Bob, N5RP); Date: Wed Jan 10 02:42:43 2001; ==> If it is determined that a sine wave is needed, but the inverter puts out a square wave...... Feed the inverter's output into a transformer, such as a 1:1 isolation type. The output from the tran; /archives//html/CQ-Contest/2001-01/msg00041.html (8,144 bytes)
5. [CQ-Contest] Power Inverters (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed Jan 10 06:18:48 2001; Hi Bob, I wish that were true, it would make life easier for all of us. Unfortunately it isn't. "Rounding" square waves requires the harmonics be removed, and that requires the "transformer" have res; /archives//html/CQ-Contest/2001-01/msg00044.html (8,807 bytes)
6. [CQ-Contest] Power Inverters (score: 1): Author: N5RP@pdq.net (Bob, N5RP); Date: Wed Jan 10 14:12:06 2001; ==> I run my computer off of a power inverter all the time. so I am aware of their not needing a pure sine. As for a square wave into a transformer, the math will show that the drop from horizontal t; /archives//html/CQ-Contest/2001-01/msg00046.html (8,252 bytes)
7. [CQ-Contest] Power Inverters (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed Jan 10 11:36:39 2001; It would depend on the supply Bill. I know very little about computers (except they waste my time), but I work daily with circuitry used in power supplies. Most AC line operated switching supplies r; /archives//html/CQ-Contest/2001-01/msg00050.html (9,227 bytes)
8. [CQ-Contest] Power Inverters (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed Jan 10 18:56:44 2001; Hi Bob, I agree that most switching supplies don't care if the input is a sine or square wave (as long as peak voltage is within range of the regulation system), but I disagree strongly with the sugg; /archives//html/CQ-Contest/2001-01/msg00054.html (10,246 bytes)
9. [CQ-Contest] Power Inverters (score: 1): Author: k1ir@designet.com (Jim Idelson); Date: Fri Jan 12 10:14:39 2001; Does anybody have a suggestion for a 220 to 110 converter for operating small 110v wall-wart power supplies while traveling in Europe? The 12v power supply for my IC706 and my laptop are completely E; /archives//html/CQ-Contest/2001-01/msg00066.html (7,525 bytes)

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