grillking
Rookie Solder Flinger
Posts: 10
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Post by grillking on Sept 21, 2006 18:03:42 GMT -5
What purpose does a capacitor serve on a tone control? What would happen if I didn't use a capacitor?
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Post by ChrisK on Sept 21, 2006 18:10:24 GMT -5
A capacitor is a device in which the impedance (sort of like AC resistance in a most simplistic view) goes down as the frequency goes up.
If it is in series with the signal, it's a high-pass filter.
If it's in parallel with the signal, it's a high-pass shunt across the signal (a low-pass effective response).
If you remove the capacitor and short the pot terminals in place of the cap, you will have a volume shunting control that will make the pickups sound darker (and quieter) as you turn the control down until all output is shorted out.
If you just remove the capacitor, the control will be ineffective.
The capacitor makes this pot circuit into a tone control.
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grillking
Rookie Solder Flinger
Posts: 10
Likes: 0
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Post by grillking on Sept 21, 2006 18:17:14 GMT -5
If I am looking to replace a capacitor can I find em at Radio Shack? I was searching their website and they have the values in uf vs. nF.
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Post by ChrisK on Sept 21, 2006 23:13:28 GMT -5
nF is not popular in the U.S.
A "uF" is just 1,000 "nF's".
0.022 uF is 22 nF.
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Post by flateric on Sept 22, 2006 7:36:01 GMT -5
u=micro, n=nano
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Post by ChrisK on Sept 22, 2006 20:23:23 GMT -5
uF = micro = 1/million
nF = nano = 1/billion (a thousand million for you Brits).
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Post by UnklMickey on Sept 22, 2006 22:07:04 GMT -5
uF = micro = 1/million
nF = nano = 1/billion (a thousand million for you Brits). u = micro = 1/million n = nano = 1/billion (a thousand million for you Brits). p = pico = 1/trillion f = femto = ......................... 1 / a real, real lot okay? ....................... let's stop before i have to see a yoctoR.
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