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Date:         Mon, 21 Jan 2002 11:57:11 -0600
Reply-To:     Larry Alofs <lalofs@ENTERACT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Larry Alofs <lalofs@ENTERACT.COM>
Subject:      Re: AFM Capacitor fix
Comments: To: Blake Thornton <thornton@MATH.UTAH.EDU>
Content-Type: text/plain; charset=us-ascii

I used the 10 MFD tantalums by connecting two in parallel. (Connect the 2 + leads together and the 2 - leads together). If your putting it inside the AFM, I'm not sure about the amount of room. I put mine in the connector that hooks onto the AFM by stripping the insulation back a little on the proper two wires and soldering. The caps fit under the rubber boot OK.

Higher voltage rating is good, if the package doesn't get too big physically; gives an extra safety margin and perhaps longer life. 16 V is OK since its a tantalum, but given a choice I'd go with 25 V. Stick with tantalum; best in a hostile environment, low leakage.

Larry A.

Blake Thornton wrote: > > After looking at harald_nancy page: > http://www.geocities.com/harald_nancy/intermitt._syndrome.htm > > i went to Radio shack to buy a capacitor. I was looking for a 16 volt, 22 > micro farad tantalum capacitor. Well, I couldn't find one. Here is what > is in the radio shack catalog (pg 270 if you have one): > > Tantalum Capacitors: > 10 microF, 16 WVDC (I assume WVDC means volts) <--- is this the one? > 1 microF, 35 WVDC > > Hi-Q ceramic discs: > 4.7 pF 50 WVDC > 47 pF 50 > 100 pF 50 > 220 pF 50 > 470 pF 50 > .047 microF 50 > .1 microF 50 > .001 microF 500 > .0047 microF 500 > .01 microF 500 > .01 microF 2000 > > Metal film: > microF WVDC > .01 50 > .022 50 > .047 50 > .1 50 > .22 50 > .01 400 > .1 250 > 1 250 > > Axial-Lead electrolytic > microF WVDC > 4.7 35 > 10 35 > 22 35 <----- is this the one, too many volts? > 47 35 > 100 35 > 100 35 > 220 35 > 470 35 > 1000 35 > 2200 35 > 4700 35 > 1000 50 > 2000 50 > > Radial-Lead electrolytic > microF WVDC > 220 16 <---- is this the one? to many farads? > 470 16 > 1000 16 > 4.7 35 > 22 35 <---- how about this one? > 47 35 > 100 35 > 220 35 > 470 35 > 1000 35 > 100 50 > > So, do I need to go somewhere else, or is the one I need here? > > blake


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