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eriknehamkin982@gmail.com: Jul 20 11:31PM -0700 Sorry for the delay, I have a garbled sounding right audio channel, and the AM won't tune (not a huge deal)

eriknehamkin982@gmail.com: Jul 20 11:49PM -0700 I should add I know it is not the speakers I swapped the left to right and the problem followed, it is on FM, and Aux, I presume phono (dont have a player to test with) and the AM is all static, but the right channel has a low sound compared to the left.

jurb6006@gmail.com: Jul 21 12:30AM -0700 What kind of equipment do you have ? Got a DVM ?

Ralph Mowery <rmowery28146@earthlink.net>: Jul 19 06:09PM -0400 In article <b78946c6-8a01-46e0-93a3-b27b98dd9172@googlegroups.com>, peterwieck33@gmail.com says...   > Go to any site, any manufacturer - and you will find motor-start caps to be electrolytics. Really. Better yet, just open one up. And, exactly, how do you think they are made?   > Peter Wieck > Melrose Park, PA   This will be my last post on this thread. There is no use in me trying to educate a person that will not be educated . Unless you can point me to a page that specifies an electrolytic capacitor for a run and/or start capacitor for an AC motor. And I do not mean the capacitors used in a varitabble speed drive, just an ordinary AC motor.   If you go to the last sentence or two it will tell you that they are not suited for use on AC lines.     Here is a quote from your belovied Wiki   https://en.wikipedia.org/wiki/Electrolytic_capacitor     Reverse voltage   An exploded aluminum electrolytic capacitor on a PCB Standard electrolytic capacitors, and aluminum as well as tantalum and niobium electrolytic capacitors are polarized and generally require the anode electrode voltage to be positive relative to the cathode voltage.   Nevertheless, electrolytic capacitors can withstand for short instants a reverse voltage for a limited number of cycles. In detail, aluminum electrolytic capacitors with non-solid electrolyte can withstand a reverse voltage of about 1 V to 1.5 V. This reverse voltage should never be used to determine the maximum reverse voltage under which a capacitor can be used permanently.[51][52][53]   Solid tantalum capacitors can also withstand reverse voltages for short periods. The most common guidelines for tantalum reverse voltage are:   10 % of rated voltage to a maximum of 1 V at 25 °C, 3 % of rated voltage to a maximum of 0.5 V at 85 °C, 1 % of rated voltage to a maximum of 0.1 V at 125 °C. These guidelines apply for short excursion and should never be used to determine the maximum reverse voltage under which a capacitor can be used permanently.[54][55]   But in no case, for aluminum as well as for tantalum and niobium electrolytic capacitors, may a reverse voltage be used for a permanent AC application.   To minimize the likelihood of a polarized electrolytic being incorrectly inserted into a circuit, polarity has to be very clearly indicated on the case, see the section on "Polarity marking" below.   Special bipolar aluminum electrolytic capacitors designed for bipolar operation are available, and usually referred to as "non-polarized" or "bipolar" types. In these, the capacitors have two anode foils with full-thickness oxide layers connected in reverse polarity. On the alternate halves of the AC cycles, one of the oxides on the foil acts as a blocking dielectric, preventing reverse current from damaging the electrolyte of the other one. But these bipolar electrolytic capacitors are not adaptable for main AC applications instead of power capacitors with metallized polymer film or paper dielectric.

John-Del <ohger1s@gmail.com>: Jul 20 07:10PM -0700 Fisher RS-717 with water damage. Guy wants it fixed for nostalgia's sake...   John

"pfjw@aol.com" <peterwieck33@gmail.com>: Jul 20 09:48AM -0700 On Wednesday, July 18, 2018 at 6:19:30 PM UTC-4, Peter Jason wrote:     > Can I simply bypass this unit and use a common > household time clock instead.   Given that most instructions for these devices are written in Sanskrit using roman characters, that is no surprise.   Yes, you may use a simple timer - but there are issues with that:   a) Freezing b) Battery/power failure   I suggest that if you want to use a very simple timer, that you back it up with a basic two-wire thermostat set to the lowest temperature you can tolerated. Then have your timer bypass it for when you want thinks warmer.   Peter Wieck Melrose Park, PA

Peter Jason <pj@jostle.com>: Jul 21 09:11AM +1000 On Fri, 20 Jul 2018 09:48:08 -0700 (PDT),   >I suggest that if you want to use a very simple timer, that you back it up with a basic two-wire thermostat set to the lowest temperature you can tolerated. Then have your timer bypass it for when you want thinks warmer.   >Peter Wieck >Melrose Park, PA   Thank you. Our needs are simple because we all work business hrs. We want the thing to turn on about 1-hr before everyone gets home and off when everyones' in bed. The house is large and has umpteen hot-water panel radiators that take time to warm up.

etpm@whidbey.com: Jul 20 11:42AM -0700 >Now, if you find it to be a run capacitor, somehow figure out how to measure current draw. Clampon ammeters are not expensive anymore, get the elcheapo Chinese kind. You have all these caps, and the optimum one will be the one that results in the lowest current drain. If with all of them in circuit the draw is lowest, go get like a 750. Then fine tune that. Keep throwing more and ore on there until the draw starts to go up. Once it gets past its peak back off. Well not peak but minimum. When you find the lowest current draw you have found the optimum cap value.   >I don't now where you are but I am in the US and the last time I got motor caps it was from WW Grainger. If you have ANY company name, use it, the price changes. Five caps might be $ 20 each, that's a Cnote. If you get them cheaper it matters. Just remember they should be 440 VAC rated. Whoever put those 115 VAC caps in there should be flipping burgers.   >Need to know if it is a run or start cap. If it is a start cap forget all I wrote. But I really think it is a run cap. Actually the proper caps are 115 volt caps. Seems weird on a 220 volt motor but if you look at a wiring diagram for a dual voltage, 110/220 volt capacitor start motor you will see why. The caps only ever see 110 volts. It turns out that the capacitance is so high because the motor is meant for starting high torque loads, like an air compressor, which is what it doing. Since Grainger paired this compressor and motor I guess they knew what they were doing. Eric

Ralph Mowery <rmowery28146@earthlink.net>: Jul 20 03:03PM -0400 In article <4734ld908c6tlrk7kdftjldsfqoorfkhtr@4ax.com>, etpm@whidbey.com says... > which is what it doing. Since Grainger paired this compressor and > motor I guess they knew what they were doing. > Eric   As the voltage is usually over 120 volts ( at least here at my house I monitor the voltage and it seems to run from 119 to 124) much of the time seems the 115 volt capacitor is slightly low now. Most of the places I see recommend replacing the capacitors on the 240 volt motors with some around 400 volts, but those are the run capacitors.

jurb6006@gmail.com: Jul 20 12:14PM -0700 >"Actually the proper caps are 115 volt caps."   AHA ! I don't know why but I thought you meant a compressor for a central air condensing unit. Some people call that the "compressor".   So, I stand corrected.   In a condensing unit it won't start when there's backpressure, it'll kick out on overload a few times until the pressure bleeds off. In fact some newer electronic thermostats have a delay so it won't even try to start right away say if it just turned off and you reset the temperature, it will wait a few minutes. An AIR compressor now, well I can see my mistake. If you have it set to 100 PSI it will start with over 90 PSI loading it so a cap run type motor won't cut it.   Glad you got it figured out.

etpm@whidbey.com: Jul 20 01:08PM -0700 >So, I stand corrected.   >In a condensing unit it won't start when there's backpressure, it'll kick out on overload a few times until the pressure bleeds off. In fact some newer electronic thermostats have a delay so it won't even try to start right away say if it just turned off and you reset the temperature, it will wait a few minutes. An AIR compressor now, well I can see my mistake. If you have it set to 100 PSI it will start with over 90 PSI loading it so a cap run type motor won't cut it.   >Glad you got it figured out. The compressor has an unloader so that there is no pressure in the cylinders when it first starts spinning. But of course as you said as soon as it delivers air into the receiver it is pushing air into 90 PSI. I am still a little amazed by the large value caps though. Eric

jurb6006@gmail.com: Jul 20 02:57PM -0700 >"I am still a little amazed by the large value caps though. Eric "   Me too. Just now many HP is that thing ?

etpm@whidbey.com: Jul 20 03:31PM -0700 >>"I am still a little amazed by the large value caps though. >Eric "   >Me too. Just now many HP is that thing ? Three HP.

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