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internal discharge resistor Answered

well... does anybody know what it is or what it does? i have one its model number is 7C120M33R other stuff written on it are 12 MFD 330 VAC 50/60 HZ 185 degrees centigrade MAX CASE TEMP NO PCB'S product from ADVANCE what cool stuff can i do with this or should i just sell it to buy other neat gadgets?(even though i tried looking for these on ebay found nothing) i took it off a light fixture from a stew leonards store...lol

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LasVegas
LasVegas

Reply 13 years ago

Tool Using Animal is correct. Your device is a capacitor. It may have a label indicating "internal discharge resistor." That indicates a safety feature. Since the capacitor could hold a 330v charge, it could be very dangerous since a capacitor can hold a charge indefinitely. A very high value resistor across the capacitor internally wouldn't effect it's performance much, but would discharge the capacitor in a relatively short time when not in use. A light fixture, huh? I'm trying to think how a capacitor might be used in a light fixture... Was is a neon or florescent lamp?

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Rotten
Rotten

Reply 13 years ago

um i dont know lol i just saw it in an alley and salvaged, what should i do(the capacitor is fully discharged yes i was an idiot and touched both wires) should i just sell this? or is it very usable could sombosy explain VOLTS for me i hear its only howmuch electricity can flow through but MAH is a measurment of how strong or something... thanx

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Tool Using Animal
Tool Using Animal

Reply 13 years ago

Sell it, a quick look shows they're used in HID lights, and retail for about $75, since you have the serious potential for dying here, i'd ebay it.
MFD is the capacitance in millifarads, volts is...... anyways the stored energy is 1/2 CV2 or about 650 Joules, plenty enough to hurt you.

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LasVegas
LasVegas

Reply 13 years ago

MFD = MicroFarad. As I pointed out, the "internal discharge resistor" makes this device safe to handle. Finding it in an alley, I'd bet that it's dry (bad) or shorted (also bad) and wouldn't be worth selling.

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Tool Using Animal
Tool Using Animal

Reply 13 years ago

Damn I did that again, just a factor of a thousand ;-)

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Rotten
Rotten

Reply 13 years ago

well im not so sure, it seemed to have been placed there it wsnt on the floor it was in a basket along with many other of the same objects along with a whole light fixturethat was in good condition i dont see why they would throw that out, im tempted to put the 2 wires in a wall outlet to charge it but my gut instinct says dont do it you idiot!

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LasVegas
LasVegas

Reply 13 years ago

Woah! Don't do that! There are two basic forms of electricity; AC (alternating current) and DC (direct current). A capacitor charges and then block DC while AC current will appear to pass right through it. Best case scenario of plugging it into the wall (AC current) is that it would blow the fuse. Worst case; The capacitor would explode in your face. Just don't do it.

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Rotten
Rotten

Reply 13 years ago

yeah, but what do i sell it as, i cant find anything like this, i don't know if it works either, is their a safe way to test it such as giving it a small charge lol i need help selling it

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LasVegas
LasVegas

Reply 13 years ago

Put an Ohmmeter (resistance meter) across it. If it starts out at a very low resistance and quickly rises, the capacitor is functioning. As to whether it's functioning correctly is another mater. If the meter shows a steady resistance without changing, or an open circuit (infinite resistance) the capacitor is bad.

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Rotten
Rotten

Reply 13 years ago

i dont have one of those, i used to have a little battery checker that would show if the abttery helf a charge or not thats it