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Old 12-23-2006, 09:50 PM   #21
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Well, YT - my first thought was a cracked plug or bad cord - and maybe wet hands ... but, if it was holding a charge after being plugged in and turned on ... it really sounds like a blown bleeder resistor, since a blown cap will not hold a charge (and the appliance wouldn't work anyway - since a blown cap will not charge).

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I used to rewind my own primaries and run them through a pair of 2n3055s, I have a fantastic one here hooked up to my CW voltage MX and get a lovely 36Kv out, that then charges the bank of Ex-Soviet Millitary caps
Humm ... sounds like you should have a callsign ... and perhaps quite an impressive "home brew" amp??? Well, assuming your use of CW is the same as mine.
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Old 12-27-2006, 10:05 AM   #22
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Question

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well the "Science" behind it is to put a Capacitor across the motor to act as a an EM noise filter.

ever put a hairdryer, drill or vacuum cleaner on near a TV and seen the dots that appeared like interferance on the picture?, well this Cap is supposed to reduce that by acting as a shunt for over voltage spikes caused by Back EMF from the motor.

However! there should be a resistor across this cap to discharge it fairly quickly and that`s not Always the case with some makes.

I've heard of a capacitor being used to help the motor's start windings kick in in some small and major appliances, but this is the first time that I heard of one being used for THIS application.

My washer has one, along with the food proscessor and both air conditioners for the start windings in their compressors.
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Old 12-27-2006, 10:12 AM   #23
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naah this is the cap from the line-filter, not the exciter cap used in some AC motors.
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Old 12-27-2006, 10:20 AM   #24
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That's right, you said that it was DC (direct current).
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Old 12-27-2006, 10:45 AM   #25
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the current that was stored in the cap AFTER under unplugging was indeed DC at roughly 400V, caps can`t store AC :)
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Old 12-27-2006, 11:56 AM   #26
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the current that was stored in the cap AFTER under unplugging was indeed DC at roughly 400V, caps can`t store AC :)
So, this is really more of a European problem/possibility than in the US since we don't have that current.
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Old 12-27-2006, 12:27 PM   #27
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difficult to say, if you have 3 pin plugs there then yes, this could happen too.
of course the voltage may be a little less for you as you only use 120VAC, we use 240VAC.

it really all depends on the appliance and how it`s wired and how well/poorly it`s made.

but you may be certain that a 200V shock WILL make you jump!
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