Author Topic: Microwave capacitors  (Read 2735 times)

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charlie_ruizpr

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Microwave capacitors
« on: November 08, 2011, 10:51:06 AM »
Can these be used for wind and solar charging with batteries?

RP

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Re: Microwave capacitors
« Reply #1 on: November 08, 2011, 03:28:15 PM »
I truly do NOT mean to seem sarcastic but you've asked the equivalent of "I have some steel bolts.  Could these be used on a car with a rotary engine?"

Can you give us a better idea what purpose you intend to use them for?

TomW

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Re: Microwave capacitors
« Reply #2 on: November 08, 2011, 04:18:59 PM »
Well, to be effective at storing a charge between pulses to smooth out and grab more power you would need a few hundred thousand of them. The ratings are just too small in microfarads (uF).

In general I would say "Not Likely"

Tom

Rover

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Re: Microwave capacitors
« Reply #3 on: November 08, 2011, 04:22:08 PM »
But they might work in a car with a rotary engine....

sorry , just couldn't help it :)

Rover
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dnix71

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Re: Microwave capacitors
« Reply #4 on: November 08, 2011, 05:57:59 PM »
I used to pick up microwave ovens from the trash and fix them by swapping parts. The answer is definitely no. They have very high voltage ratings, but for the safety of anyone servicing the oven almost all come with a bleeder resistor (internal or external) so they are safe to handle after 30 seconds of unplugging the oven.

They also have no real storage capacity. Their purpose is to raise the voltage on the magnetron start circuit to about 4k volts. Once the magnetron begins conducting the transformer acts as a choke on current.