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1. [Amps] Resistor Types (score: 1): Author: Garry <g.drummond@verizon.net>; Date: Thu, 21 Jun 2007 11:27:12 -0400; Hello, I am replacing the filter caps in the power supply of an Alpha 78 and will probably replace the resistors as well. There are two paralleled 120K ohm 3-watt resistors across each cap now. Would; /archives//html/Amps/2007-06/msg00108.html (6,267 bytes)
2. Re: [Amps] Resistor types (score: 1): Author: john.brewer@us.schneider-electric.com; Date: Thu, 21 Jun 2007 12:00:38 -0400; If you're looking to replace the functional characteristics of a Carbon Comp (particularly in respect surge performance) then Metal Oxide Composite is the type you want, rather than any of the film r; /archives//html/Amps/2007-06/msg00109.html (6,529 bytes)
3. Re: [Amps] Resistor Types (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Thu, 21 Jun 2007 11:22:52 -0700 (PDT); Hi Garry, Likely, the biggest concern is the voltage rating of the replacements. You can be under the power dissipation limit of a resistor and at the same time, be above the voltage limit (until it; /archives//html/Amps/2007-06/msg00110.html (7,694 bytes)
4. Re: [Amps] Resistor Types (score: 1): Author: Manfred Mornhinweg <mmornhin@gmx.net>; Date: Fri, 22 Jun 2007 12:29:40 -0400; I agree with Bryan on this. One of the most unreliable type of components is resistors operated at high voltage. In my amp, I discovered bad voltage equalization resistors when the electrolytics sta; /archives//html/Amps/2007-06/msg00111.html (8,725 bytes)
5. Re: [Amps] Resistor Types (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Fri, 22 Jun 2007 19:56:16 +0200 (CEST); The comments about equalising resistors on diodes are interesting. The guys who manufactured and did the applications on diodes, SCR's, triacs and IGBTs at my employer's plant in Lincoln (before it w; /archives//html/Amps/2007-06/msg00112.html (7,772 bytes)
6. Re: [Amps] Resistor Types (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Fri, 22 Jun 2007 21:47:10 +0100; Interesting comments, Manfred - but what types of resistor are failing on you? Steve _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/; /archives//html/Amps/2007-06/msg00115.html (7,450 bytes)
7. Re: [Amps] Resistor Types (score: 1): Author: Manfred Mornhinweg <mmornhin@gmx.net>; Date: Sat, 23 Jun 2007 10:02:43 -0400; Peter, Yes, this is of course a point to keep present. It would never occur to me to make a series string of different diodes, and use them without equalization! But for that matter, I wouldn't use a; /archives//html/Amps/2007-06/msg00122.html (10,466 bytes)
8. Re: [Amps] Resistor Types (score: 1): Author: "jeremy-ca" <km1h@jeremy.mv.com>; Date: Sat, 23 Jun 2007 14:14:10 -0400; I still have fond memories of working for High Voltage Engineering Corp back in the 69-70 era. Our typical product was 200-500KV @ 100-200ma power supplies primarily used in textile processing. There; /archives//html/Amps/2007-06/msg00126.html (8,535 bytes)
9. Re: [Amps] Resistor Types (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Sun, 24 Jun 2007 10:29:19 +0200 (CEST); me to make a series string of different diodes, and use them without equalization! But for that matter, I wouldn't use a series string of different diodes at all, not even with equalization!< Fortuna; /archives//html/Amps/2007-06/msg00132.html (8,432 bytes)
10. Re: [Amps] Resistor Types (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sun, 24 Jun 2007 06:52:56 -0400; So when I call Mouser and order 25 diodes, I know they are all from the same batch or the same plant on the same day because??????? Because they are the same color? Because I ordered them on the sam; /archives//html/Amps/2007-06/msg00133.html (8,106 bytes)
11. Re: [Amps] Resistor Types (score: 1): Author: Manfred Mornhinweg <mmornhin@gmx.net>; Date: Sun, 24 Jun 2007 09:38:12 -0400; Hi Peter! Well, I'm not so much a believer in that! I would probably just replace the string with the failed diode, at least if I know a good reason why it failed. If I don't know the reason, I might; /archives//html/Amps/2007-06/msg00136.html (9,730 bytes)
12. Re: [Amps] Resistor Types (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Sun, 24 Jun 2007 19:03:12 +0200 (CEST); If I have part of a HV bridge fail, I generally figure that something caused it other than a pure a random failure, so changing the lot in case there's been an over stress costs so little (at our pow; /archives//html/Amps/2007-06/msg00139.html (8,522 bytes)

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