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bbcmicro
September 7th, 2006, 07:43 AM
If I link two 22 mf capacitors in series will they have a combined capacitance of 44 mf, or will I risk the safety of my eyebrows?

kb2syd
September 7th, 2006, 08:12 AM
Theoretically, capacitors in series combine as the reciprocal of the sum of reciprocals. In this case, 11 mf.

For them to work additively, you have to combine them in parallel (make sure you match the polarity).

This is of couse theoretically. I won't guantee how they will behave in circuit.

See http://www.play-hookey.com/dc_theory/series_capacitors.html for some discussion on this.

alltare
September 7th, 2006, 11:01 AM
Two 22mf capacitors in SERIES results in a total capacitance of 11mf .
Two 22mf caps in PARALLEL results in 44mf.
This is the opposite of the way series and parallel resistors work.

(If the two caps have the same voltage rating, then putting them in series will double the overall voltage rating. The voltage rating will be unchanged if the caps are in parallel).
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If I link two 22 mf capacitors in series will they have a combined capacitance of 44 mf, or will I risk the safety of my eyebrows?