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  #16  
Old 12-01-2008, 08:11 AM
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Old1625 Old1625 is offline
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If you can't find a non-polar then you might want to consider what Don Lindsly has to say; I've now looked over the schematic, and am inclined to agree with him that the AGC line is not apt to go positive in normal op.
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  #17  
Old 12-01-2008, 09:09 AM
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Although not very pretty, You can make a non-polar cap by connecting two electrolytic caps together in series and tying the negatives together.
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  #18  
Old 12-01-2008, 09:15 AM
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I won't have trouble finding a capacitor. Metalized film caps with that value are quite common.

Looks like I'll have to record the voltage levels there during startup and operation of the set. (Once I get my hands on it and hopefully restore it.)

The fact that Sylvania wanted 150V for the positive rating makes me think that even if it's only a transient that a normal electrolytic wouldn't be very happy living there.

It's great that everyone has been so helpful and thought carefully about this, but I really was only curious about such a wierd capacitor and whether others had ever seen one. I hope the original is still there to look at.

John Y.
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