// Agreed // Unreliability is why we do not proffer wire-wound resistors for electrolytic capacitor equalizer/bleeder service. Although lower value wire-wound resistors are fairly reliable, as you h
In aircraft, a dual ignition system is used - because your life depends upon it. Perhaps a good practice to adopt is to use a redundancy on the bleeder resistors. This would protect the capacitors fr
Thinking back a number of years, I had exactly the same experience with the equalizers in my Viewstar amp. Two of them were open, with absolutely no visual evidence that anything was wrong. These wer
// Two equalizers in parallel would not solve the open-resistor problem because the resistance across each capacitor must be the same at all times or capacitor failure is certain. High value wire-wo
// An apt name. // If this situation had gone on for long, two of the filter capacitors would have been long gone. cheers, Phil - R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures. end -- F
While I have no idea specifically about the resistor used in that case, when looking at the parts inherited from other "XXXXstar" bankruptcy purchases many were surplus. Amp supply had the same purc
In the case of equal value parallel resistors, the capacitors would have to be rated at twice the normal operating voltage. Otherwise you gain nothing. Using a high value and low value in parallel w
Very Interesting! My Viewstar had the same problem. Ended out building new capacitor mounts as exact replacements not available here. Used new German hi spec resistors. No problems since. 73 end Barr
--part1_a2.1a5a50ea.28ec6ae3_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit For whatever it's worth, the part in question is labeled HEI 8732, FST-20. I have or
// The amount of energy stored (<100J) would be unlikely to cause death. I know of no one eho became a Silent Key because of an open bleeder resistor in a ham amp. All such decedents that I am aware
These were all new parts when built Tom. Ohmite Brown Devils are still made. They're hollow core, wire-wound, glazed enamel. Physically, nice well made looking resistors. But that didn't seem to prev
Maybe so. The high failure resistors from Amp Supply and Ameritron's original AL80 were brand new IRC resistors from surplus channels. Same for some Vectronics and Viewstar parts. My point is you ju
--Original Message-- I've seen numerous failures of products in the cell and paging base station industry from repeated expansion/contraction movement in component leads and coax inners. WW resistors
To: <amps@contesting.com> // Two reasons that we chose to carry Matsushita MOF equalizer resistors is the low failure rate and the superb accuracy. So far, we have sold more than 7,000 units and the
I'm back - typing one handed, not plastered, possibly a fracture, possibly torn tendons. Most of the last two weeks has been spent in a drug induced haze, so I guess I could have made as much sense a
torn so I Wire-wound, high-ohm resistors are unreliable without corrosion and without cracking due to frangible nature of the fine wire used in making them, and due to frequent heat-cycling in ham r
That's fighting talk! A lot of good beer comes from England: a small amount from Wales and Scotland. Belgium produces some very good stuff, and the only decent Budweiser is from Budvar in the Czech r
from "In taste there is no dispute." cheers, Peter - R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.co
How did "noises in electrolytic capacitors" evolve into a discussion about beer? I don't know, but I'm glad it did. I think I'll have a beer. WB2WIK/6 "Each success only buys an admission ticket to a
--part1_123.5255efc.28e924f0_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Tom gets the troubleshooting prize for this problem. After pulling the caps, I check