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Volume


AngelLaHash
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I'm not sure where to start, so I'll just type what i am thinking to a degree.

The Volume pot is being used as a [size=3][font=opendyslexic]potential [/font][/size]Divider,
Input one side, middle the Output and other side is GROUND.
So that what Voltage is made from the Pickups, from the strings pulling the Magnets via a Copper coil.
As far as I know that the voltage out of these things is dam small
And its not AC to speak of but a frequence range, normally 0-6KHz i think i read some were, but human hearing is 0-20KHz
These are just things I've read Online (so not 100% the Truth)
Is divided between the Two half's of the POT.

So why 250K, why not 50K or like I'm told a good value for Humbuckle Picks up's is 500K.



I know Electronics and Electrical's but i dont normally use a Pickup as a Power Supplie or do circuits with a "AC" circuits.

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The pickup and pot also form a voltage divider. The pot is purely resistive so its value is the same at any frequency. The pickup also has a fixed resistance but it's also inductive, so you have to add in its impedance (or AC resistance), which increases with frequency. If you use a low value pot, e.g. 50K, it may be fine for low frequencies but at high frequencies the pot's resistance is low relative to the impedance of the pickup and only a small proportion of the pickup's voltage will appear across the pot.

It's effectively a frequency-dependent voltage divider so the pot's resistance must be high compared to the pickup impedance so as to maintain consistent level across the frequency range.

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First off, thanks you for explainging the bigger picture to me Dincz :rolleyes:

So what about the Bleed cap that is put in,
People use 1nF, 1nF with a Resister (220K-120K) and 200pF
That chances the Freq and the Impedance Xc=1/(2*Pi*C*f)

Would it be best to have some Calculation to balance between the Pickups and the Volume pot

Edited by AngelLaHash
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My current set up for my P-Bass is 2xHex Switching giving me a Range of 200pF to 100nF in 200pF steps
thats just the tone contol's it also has [url="http://www.impossibleband.com/projets-electroniques/megatone/megatone---archive#TOC-Megatone-36"]http://www.impossibleband.com/projets-electroniques/megatone/megatone---archive#TOC-Megatone-36[/url]

sort of like that but, i have more a range on the Caps and the "Boost" Resister has more 4 ranges 15k, 150K and 1K5 and direct to ground.

So i just need to play around with them to find my area of perfection

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