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Old 19th Feb 2019, 10:54 pm   #1
Nanozeugma
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Default 8 mfd low voltage non polarised electrolytic.

As subject. Trying to source a replacement for a reversible 8uF 12v for an FM discriminator. No luck thus far
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Old 19th Feb 2019, 11:01 pm   #2
Ed_Dinning
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Default Re: 8 mfd low voltage non polarised electrolytic.

Hi if space is not a problem you could use modern low voltage non electrolytic parts, you only need a minimum working voltage part.

I'm surprised that it is a non polar e cap, most use in this position are standard types, but are connected + to chassis.

Ed
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Old 19th Feb 2019, 11:14 pm   #3
Argus25
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Default Re: 8 mfd low voltage non polarised electrolytic.

There are plenty of these on ebay, it doesn't have to be exactly 8uF you can use a couple of 4,7uF 's in parallel or a 10uF, and as long as the voltage is 12V or above its fine, this is one of very many:

https://www.ebay.com/itm/4pcs-NEW-Ni...FxJ:rk:22:pf:0
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Old 20th Feb 2019, 2:52 am   #4
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Default Re: 8 mfd low voltage non polarised electrolytic.

I have seen some in a set of filled component drawers I acquired many years ago.
I could put a couple on my tester to see if they are still all right. They were never that reliable.
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Old 20th Feb 2019, 8:56 pm   #5
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Default Re: 8 mfd low voltage non polarised electrolytic.

Quote:
Originally Posted by Ed_Dinning View Post
Hi if space is not a problem you could use modern low voltage non electrolytic parts, you only need a minimum working voltage part.

I'm surprised that it is a non polar e cap, most use in this position are standard types, but are connected + to chassis.

Ed
Yes indeed! What radio is it? I've only ever seen normal electrolytics in this position. If it really does have to be reversible, you can connect two normal electrolytic 16uF caps in series, positive to positive or negative to negative.
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Old 21st Feb 2019, 5:13 am   #6
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Default Re: 8 mfd low voltage non polarised electrolytic.

RS list some Panasonic 10uf bi polar here https://uk.rs-online.com/web/c/passi...475,4292049494

Would that do?

Regards

Graham
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Old 21st Feb 2019, 8:08 am   #7
Craig Sawyers
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Default Re: 8 mfd low voltage non polarised electrolytic.

10u 16V bipolar for 20p here https://www.hificollective.co.uk/com...chicon_es.html

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Old 21st Feb 2019, 8:35 pm   #8
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Default Re: 8 mfd low voltage non polarised electrolytic.

Try Falcon Acoustics or other loudspeaker & crossover suppliers. 8uF is a common value.
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Old 22nd Feb 2019, 6:25 pm   #9
Nanozeugma
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Default Re: 8 mfd low voltage non polarised electrolytic.

Thanks for all the suggestions people
I got four 10uF 50v for 1.85 posted from a supplier in Devon eventually.
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