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F4iMerlin
Joined: 24 Feb 2007 Posts: 1
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Posted: Sat Feb 24, 2007 6:51 pm Post subject: Help me Identify this Disc Capacitor |
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I need to replace this capacitor, but I cant seem to find a resource to decode the values. I was hoping a bright individual here might be able to help so I can find a new one. Thanks!
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vtech
Joined: 08 May 2006 Posts: 1264 Location: USA
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Posted: Sun Feb 25, 2007 6:50 am Post subject: |
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...Strictly going by memory. Seems like I have seen a similiar protector device on some piece of equipment & while it may look like a cap, it is some sort of a protector or varistor? What equipment is it out of? Is it out of some sort of a speaker/crossover ?? |
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gilloz
Joined: 03 Feb 2007 Posts: 33 Location: So. Cal High Desert
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Posted: Tue Feb 27, 2007 4:38 am Post subject: ID cap |
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Do what I did one time. I took an undefinable cap to Radio Shack and used one of their Capacitor Meters to get the value. |
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FuzzyUK Guest
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Posted: Thu Mar 01, 2007 8:46 pm Post subject: Not likely a capacitor |
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I agree; looks like a varistor of some sort rather than a capacitor and I've been in electronics over 40 years. Was it across the mains supply? |
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RODALCO
Joined: 28 Oct 2006 Posts: 30 Location: Auckland - New Zealand
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Posted: Sat Mar 03, 2007 9:22 am Post subject: MOV |
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Looks like a Metal Oxide Varistor or MOV device to me too.
These are usually near the powersupply at the incoming mains supply to clamp voltage spikes, to protect equipment downstream in the equipment.
For 230 Volts RMS i usually get 280 V rms 6 or 20 kA rating from Jaycars for NZ$2, about US$ 1.40
For 110 Volts you probably need to get something around the 140 V rms rating.
Good luck, Raymond |
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RODALCO
Joined: 28 Oct 2006 Posts: 30 Location: Auckland - New Zealand
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Posted: Sat Mar 03, 2007 9:29 am Post subject: MOV |
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Just had a look in my spare parts box in my workshop.
I have a red one, and the legs are exacltly tagged at the sides as the one on your photo.
The coding is vague but 400L40 and 6503 is printed on it.
That one is rated for 400 volts rms, came out of a 3 phase solid state kWh meter
These usually blow to destruction or crack open.
In principle your equipment should work without it only for a short testrun. |
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