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References: [ +from:drkirkby@gmail.com: 7 ]

Total 7 documents matching your query.

1. Re: [Amps] PA efficiency (score: 1)
Author: David Kirkby <drkirkby@gmail.com>
Date: Wed, 18 May 2011 13:56:36 +0100
It's totally pointless stating the efficiency to 3 significant figures (58.3%). Whilst if you use a DVM you can read DC voltages and currents to well under 1%, you wont be able to measure the RF powe
/archives//html/Amps/2011-05/msg00147.html (8,478 bytes)

2. Re: [Amps] What is the going rate for YC156s / what have people paidfor them? (score: 1)
Author: "Dr. David Kirkby" <drkirkby@gmail.com>
Date: Thu, 1 Aug 2013 18:41:01 +0100
They are in the UK. Untesed, but I will guarantee them, as they came from Norman Hockler, who I know was a relieable source of these. Dave _______________________________________________ Amps mailing
/archives//html/Amps/2013-08/msg00053.html (9,666 bytes)

3. Re: [Amps] What is the going rate for YC156s / what have people paidfor them? (score: 1)
Author: "Dr. David Kirkby" <drkirkby@gmail.com>
Date: Thu, 1 Aug 2013 22:27:22 +0100
This one sold for $350 http://www.ebay.co.uk/itm/Eimac-YC-156-A-/160977186686 but it is only a sample of one. They seem to be getting quite rare now, so its hard to find much data on the selling pric
/archives//html/Amps/2013-08/msg00054.html (9,417 bytes)

4. Re: [Amps] Chinese 15KV 2A rectifier modules? (score: 1)
Author: "Dr. David Kirkby" <drkirkby@gmail.com>
Date: Thu, 7 Nov 2013 02:02:18 +0000
You could do a reasonable job of seeing how they handle the current using a low voltage DC supply, since they are only going to get hot when conducting, and you can force them to conduct without havi
/archives//html/Amps/2013-11/msg00143.html (9,171 bytes)

5. Re: [Amps] "N, " "TNC" and "BNC" connectors are rated at 500 Watts and work at 1, 000 Watts as log as the load is good.. (score: 1)
Author: "Dr. David Kirkby" <drkirkby@gmail.com>
Date: Mon, 11 Nov 2013 12:46:18 +0000
I suspect part of the problem is that they are often not assembled properly. Often the male or female are too far forward or too far back, which gives a less than optimal electrical contacts, and I s
/archives//html/Amps/2013-11/msg00280.html (12,732 bytes)

6. Re: [Amps] Russian HV Supply Capacitors (score: 1)
Author: "Dr. David Kirkby" <drkirkby@gmail.com>
Date: Thu, 9 Jan 2014 19:08:32 +0000
My concern would be what is the ripple current rating. It looks to me these are designed for pulse applications, where the repetition rate is probably very slow. The 2000A discharge current is no dou
/archives//html/Amps/2014-01/msg00050.html (9,819 bytes)

7. Re: [Amps] Cool Amp Silver Plating (score: 1)
Author: "Dr. David Kirkby" <drkirkby@gmail.com>
Date: Sat, 1 Mar 2014 22:40:31 +0000
improving the conductivity of surfaces like cavities and inductors for RF current, as Peter pointed out. That requires at least 3 to 5 times the skin depth What controls the thickness of the cool amp
/archives//html/Amps/2014-03/msg00015.html (8,071 bytes)


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