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References: [ +from:amps@txrx.demon.co.uk: 190 ]

Total 190 documents matching your query.

81. [AMPS] ICE Filter Update (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 27 Apr 1999 21:01:50 +0100; Speaking in total ignorance of the product, it stinks of a design problem to me. Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: a; /archives//html/Amps/1999-04/msg00403.html (8,256 bytes)
82. [AMPS] Power Meter Readings Question (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 28 Apr 1999 07:24:33 +0100; Adjusting the tuner changes the load impedance which the amp, and thus the output tube sees. Changing the impedance will change the power it delivers. The forward power readings are sometimes reasona; /archives//html/Amps/1999-04/msg00408.html (9,860 bytes)
83. [AMPS] Power Meter Readings Question (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 29 Apr 1999 10:07:18 +0100; Usually true in practice especially with amateur products, but it need not be so. A sensor (or directional coupler) with high directivity can accurately indicate the forward and reverse power flowin; /archives//html/Amps/1999-04/msg00439.html (8,657 bytes)
84. [AMPS] screen regulators (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 2 Mar 1999 08:26:28 +0000; For belt and braces against oscillation, a few ohms right by the gate (just like a grid stopper) will rarely cause any harm. Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: am; /archives//html/Amps/1999-03/msg00013.html (7,992 bytes)
85. [AMPS] screen regulators (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 2 Mar 1999 20:51:27 +0000; I'd spotted it in your circuit, I just thought I'd add my comment for general consumption. Instability in power FETs is often ignored elsewhere. Steve -- FAQ on WWW: http://www.contesting.com/ampfaq; /archives//html/Amps/1999-03/msg00026.html (8,527 bytes)
86. [AMPS] 3-500Z chimneys (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 3 Mar 1999 09:12:53 +0000; Earlier I mentioned a friend who successfully used lantern glass and PTFE sheeting as chimneys - in view of Carl's comments I'd just clarify that these were used with forced air cooling from a small; /archives//html/Amps/1999-03/msg00080.html (7,979 bytes)
87. [AMPS] ripple current (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Mon, 8 Mar 1999 08:10:57 +0000; The rms and peak currents depend on the ratio of source and load resistances and the capacitor value. For a decent high power PSU (bridge with capacitor input) the ratio should be in the regions of 1; /archives//html/Amps/1999-03/msg00158.html (8,756 bytes)
88. [AMPS] Ripple Current (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 9 Mar 1999 20:54:57 +0000; On a modern cap I think it makes very little difference - the inductance is low enough that the esr starts to rise only in the kHz region. Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.html S; /archives//html/Amps/1999-03/msg00195.html (8,571 bytes)
89. [AMPS] ripple current (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 10 Mar 1999 07:30:32 +0000; Ooops, got it wrong, trying to do things when half asleep. The graphs I have for Philips and Aerovox caps show the ripple current rating basically constant at low frequencies. Above 1kHz or so, the e; /archives//html/Amps/1999-03/msg00209.html (7,999 bytes)
90. [AMPS] PCBs (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 11 Mar 1999 20:58:01 +0000; Steve -- 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://ww; /archives//html/Amps/1999-03/msg00236.html (7,370 bytes)
91. [AMPS] Drake info. (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 18 Mar 1999 07:05:51 +0000; Please excuse the off-topic posting, but there's a wealth of knowledge on this reflector. I'm looking for details of the VHF mod kit for fitting to a T-4XC. Can anyone help? Thanks, Steve -- FAQ on W; /archives//html/Amps/1999-03/msg00396.html (6,595 bytes)
92. [AMPS] CW amplifier progress (well, daydream progress) -- lon g (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 18 Mar 1999 07:47:44 +0000; I'm intrigued - I thought that class E operation relied on the load being well defined, with load VSWR tolerance being poor, especially if you take advantage of the low dissipation to use small trans; /archives//html/Amps/1999-03/msg00397.html (8,519 bytes)
93. [AMPS] CW amplifier progress (well, daydream progress) -- long (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Thu, 18 Mar 1999 07:55:09 +0000; If you switched to warm beer, you could turn the 'fridge off and run heaters all the time without increasing your heat input or power bills. Both our beers loose most of their taste when they are nea; /archives//html/Amps/1999-03/msg00398.html (10,144 bytes)
94. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 30 Mar 1999 07:49:51 +0100; I've not modelled it, but I think the load on the output side of a harmonic filter will have insignificant effect (a few dB in typ. 30+) on harmonic attenuation with most filter topologies. Steve --; /archives//html/Amps/1999-03/msg00683.html (9,923 bytes)
95. [AMPS] Amp opinion/infomation requested ASAP!! (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Wed, 31 Mar 1999 07:07:28 +0100; Good point - if there's more than one section in the filter I'd agree that the likelyhood is so small as to be ignored. Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@co; /archives//html/Amps/1999-03/msg00708.html (9,747 bytes)
96. [AMPS] morse code on ships (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Mon, 1 Feb 1999 07:17:56 +0000; Floating satellite beacon(s) get jettisoned automatically to raise an alarm through a UHF satellite network (I forget its acronym). The discussion has been timely - as of today (1st Feb) the internat; /archives//html/Amps/1999-02/msg00003.html (8,289 bytes)
97. [AMPS] hi-pot tester (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Tue, 2 Feb 1999 09:30:58 +0000; Is there any disadvantage to having a tester where the high voltage negative is tied to ground? Testing tubes for gold is the only thing I've seen where polarity matters, and this is done with the tu; /archives//html/Amps/1999-02/msg00052.html (6,737 bytes)
98. [AMPS] HV resistors (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Fri, 5 Feb 1999 08:45:01 +0000; I came across Philips VR37 resistors, which have 3500V dc working voltage rating. 0.5W dissipation at 70C. Farnell catalogue here has a range 1.2 to 33M at 16p/20c each. Steve -- FAQ on WWW: http://w; /archives//html/Amps/1999-02/msg00161.html (6,595 bytes)
99. [AMPS] Filament voltage inrush (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Fri, 5 Feb 1999 09:01:07 +0000; If you are using a primary side resistor to control the load voltage, it needs to be a stable, fixed value (assuming your incoming line is stable voltage). The inrush thermistors do a great job on in; /archives//html/Amps/1999-02/msg00200.html (8,013 bytes)
100. [AMPS] Component identification (score: 1): Author: amps@txrx.demon.co.uk (Steve Thompson); Date: Sat, 6 Feb 1999 07:45:46 +0000; Can anyone help with a brand name and/or spec. on some mica compression trimmers please? Part numbers are AP021HV, APO31HV and APO41HV. Thanks, Steve -- FAQ on WWW: http://www.contesting.com/ampfaq.h; /archives//html/Amps/1999-02/msg00201.html (6,600 bytes)

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