[TechAssist] Re: NP Caps?
- From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 14 Jan 2003 15:54:30 -0500
Polar electrolytics have a much greater electrical leakage current with one
polarity of bias than the other. You have to apply enough voltage, say 15 or
20% of rated, through a resistor of, say 5K, to limit the current, and
measure the current that flows after several seconds. If you have an ohm
meter with a range that uses a 9 volt battery for test, like the Simpson
260, you can just use that to do the whole thing.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: <Hermantvr@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, January 14, 2003 9:35 AM
Subject: [TechAssist] NP Caps?
>
> I was looking got as 10m electrolytic cap this morning and found a
number
> of them on the shelf...only problem is...they are not marked. They show no
+
> or - leg nor do they say NP. One leg is longer, however I notice that
some
> of the NP labeled caps have one leg longer than the other. I have no idea
> where they came from. Can these be tested for polarity?
>
> Tommy Herman
> Herman TV
> 250 School Ave SW
> Taylorsville, N.C. 28681
> 828-632-58322 Voice
> 828-632-3880 Fax
> hermantvr@xxxxxxxxxxxxx
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