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Vintage threads from the first ten years

Capacitance

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5/5/2006 3:44 PM
Mick	Capacitance Are there any situations involving pickup winding where more capacitance can be a good thing , also which wire would have the least , 42 or 43awg? or does it depend more on the insulation used? Mick

5/7/2006 6:40 PM
Mick	Ooh , ooh , were talking about capacitance again , just thought I would throw this back to the top o the pile, Mick

5/8/2006 6:53 AM

The answers are "YES". It's primarily an insulation factor and IMO a "scatter" consideration. The one thing I have found is that capacitance DECREASES with more winds/scatter. I was surprised to find this and perhaps my testing is flawed, but I have an "explanation" for it. (Also possibly flawed). Anyways, I "think" that capacitance is reduced with more winds/scatter because the start and stop winds are farer apart and with more scatter there is less "skin effect".

5/8/2006 11:30 AM
gtrman	Hi SK, so what do you think if any does this do to the output. I'm assuming it should affect it right?

5/8/2006 2:37 PM
SK	Not that simple..EVERYTHING seems to affect tone and everything seems to be intertwined...Capacitance alone? Not sure, but what causes the capacitance to shift seems to. Also, combining capacitors in series add as reciprcals (i.e. 1pf+3pf= 2/4pf= .5pf)...That also explains why more winds would lower the capacitance...

5/9/2006 1:24 PM
RS	Doesn't ring true to me but that's just me again. Capacitors in series are best thought of as product/sum, this would give (1pf*3pf)/(1pf+3pf) = 0.75pf. To use reciprocals, 1/1+1/3 = 4/3 and invert to get 3/4pf. Just an idle 2pennyworth, Rob.

5/15/2006 9:12 AM
SK	you're right, but the point is still valid...Capacitance decreases with more winds, and it should.

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