electric guitar controls
DESCRIPTION
Electric Guitar Controls. D. Hunt Southern Wells Jr-Sr High School [email protected]. Potentiometer. Variable resistor, or voltage divider. Potentiometer Continuity Testing. Continuity Testing - PowerPoint PPT PresentationTRANSCRIPT
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Potentiometer Variable resistor, or voltage divider
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Potentiometer Continuity Testing
Required Materials• Multimeter• Potentiometer
Multimeter
Potentiometer
Continuity Testing• Shows the amount of
electricity permitted to pass through Potentiometer by measuring resistance Ω (ohms)
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Potentiometer Testing cont.• Set Multimeter to 2000K
Ohms • Then connect red probe to left
connection and black probe to middle.
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Potentiometer Testing Cont.
Turn fully counter-clockwise for max ohmsTurn fully clockwise for zero ohms
500K ohms 0 K ohms
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Potentiometer Testing Cont.
Turn fully counter-clockwise for zero ohmsTurn fully clockwise for max ohms
500K ohms0 K ohms
Reversed
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Potentiometer Testing cont.
Turning in either direction causes no significant change
Shows max capacity of ohms
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Volume Control Potentiometer is
grounded on one side
Signal from pickup
Signal out to amplifier
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Tone Control Potentiometer plus
capacitor makes tone control
“Low Pass Filter” Blocks high
frequencies Only allows low
frequencies to pass Signal from pickup
Capacitor is grounded to back of case
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Volume and Tone together
The cases of the potentiometers are tied together and ground
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¼” jack for plug
Signal out
Ground
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Controls with Jack
This wire goes to bridge groundGuitar buzzes if you forget it
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Selector switch for pickups
Signal to
volume
To ground.(Forgetting to ground the switch results in a constant buzz)
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The Entire Circuit
This wire goes to bridge ground