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Total 72 documents matching your query.

61. Re: [Amps] Fwd: Re: 4 X 4-400C or 4 X 3-500Z HF amplifier (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Fri, 17 Dec 2010 07:44:44 +0100
Bill Fuqua a écrit : _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2010-12/msg00181.html (9,128 bytes)

62. [Amps] Airflow meter (was: Alpha vs Henry) (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Wed, 13 Apr 2011 13:25:23 +0200
An accurate way to measure airflow is to use a peak airflow meter. See picture here: http://en.wikipedia.org/wiki/File:Peak_flow_meter_vert.jpg This is a low-cost device used by persons with asthma t
/archives//html/Amps/2011-04/msg00363.html (12,113 bytes)

63. Re: [Amps] Airflow meter (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Mon, 18 Apr 2011 11:17:05 +0200
The previous generation of airflow meters used a duct with a hinged flap inside, which was turned by the airflow. The flap was connected to a potentiometer. The potentiometer is designed to be connec
/archives//html/Amps/2011-04/msg00472.html (12,960 bytes)

64. Re: [Amps] RF choke switching (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Fri, 10 Jun 2011 08:12:29 +0200
Vic, Why not use the vacuum relay to short the big choke? That is what is done on the tank circuit when bandswitchig. 73 de HB9SLV Vic K2VCO a écrit : _______________________________________________
/archives//html/Amps/2011-06/msg00126.html (7,837 bytes)

65. [Amps] reducing the reactance of a wirewound resistor (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Fri, 03 Feb 2012 09:23:20 +0100
Hi all I have a nice large 50 ohms wirewound resistor, which I would like to use as a dummy load. Problem is, it is inductive of course. To cancel the inductive reactance I was thinking of winding so
/archives//html/Amps/2012-02/msg00000.html (7,932 bytes)

66. Re: [Amps] current threads about silver solder and resoldering (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Mon, 03 Sep 2012 07:40:38 +0200
Yes, this is what I call an interesting thread! 73 Angel HB9SLV I recalled that the ratios of lead and tin atoms had to be an integer to for the lowest melting point. But that's not right either! I h
/archives//html/Amps/2012-09/msg00023.html (11,313 bytes)

67. Re: [Amps] Sad News for Eimac Users (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Wed, 03 Oct 2012 07:27:39 +0200
Briliant! Thanks Manfred Le 02.10.2012 17:52, Manfred Mornhinweg a écrit : Gene, I am puzzled as to why the solid-state devices seem to be more linear than tubes ("fire-FET's"?). As I understand it,
/archives//html/Amps/2012-10/msg00012.html (14,462 bytes)

68. Re: [Amps] HV Insulators (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Tue, 16 Oct 2012 07:16:07 +0200
Use an old sparkplug. Le 15.10.2012 20:35, Roger (K8RI) a écrit : On 10/14/2012 7:23 PM, George wrote: I need to replace a ceramic insulator. Would nylon be an appropriate material in a 5KV supply ci
/archives//html/Amps/2012-10/msg00095.html (8,421 bytes)

69. Re: [Amps] Microwave Oven Power Transformer (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Fri, 16 Nov 2012 06:16:50 +0100
For cost reasons, Microwave oven xformers are optimized specifically for their use in a microwave oven. They are OK as long as they supply their nominal power to a load. In the standby mode, they get
/archives//html/Amps/2012-11/msg00102.html (8,011 bytes)

70. [Amps] MOSFET amp for 80 m (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Tue, 17 Jul 2018 16:29:56 +0200
Hello everyone, On this page, http://lpistor.chez-alice.fr/pairf510.htm I found a MOSFET amp description that does not need an output transformer. The author says that the output impedance of the tra
/archives//html/Amps/2018-07/msg00052.html (7,993 bytes)

71. Re: [Amps] MOSFET amp for 80 m (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Sat, 21 Jul 2018 12:29:56 +0200
Hi, Manfred. Thanks for your answer. By the way, thanks also for the many projects on your website. I built your ESR meter last year, and right away, it allowed me to repair several SMPS I had collec
/archives//html/Amps/2018-07/msg00066.html (10,085 bytes)

72. Re: [Amps] MOSFET amp for 80 m (score: 1)
Author: Angel Vilaseca <avilaseca@bluewin.ch>
Date: Thu, 26 Jul 2018 14:46:58 +0200
Manfed, Thank you very much for taking the time to write this extremely detailed answer. I will study it carefully. Vy 73 Angel HB9SLV Le 21.07.2018 à 19:40, Manfred Mornhinweg a écrit : Angel, I bui
/archives//html/Amps/2018-07/msg00078.html (20,714 bytes)

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