Questions tagged [potentiometer]
Mechanically adjustable variable resistor with three legs. It is used as a voltage divider. (It is not a meter at all, but got the name from its historical ancestor, which was a meter.)
935 questions
13 votes
6 answers
2k views
Better ways to make a 300 milliOhm potentiometer than using 2 feet of #30 wire and a copper clip
Goal I'd like to design a potentiometer, with a range from \$0\:\Omega\$ to about \$0.3\:\Omega\$, for calibrating the zero-reading of a COTS digital voltmeter. I'd like it to be easily fabricated by ...
- 21.2k
1 vote
3 answers
121 views
Limiting Resistance Range of Potentiometer
Im working on limiting the resistance range of a potentiometer that feeds into a motor control unit. This motor control units runs an electric motor. We want to limit the joystick switch pot range to ...
- 21
4 votes
4 answers
588 views
Use of a potentiometer in a simple speaker circuit
I am trying to setup a circuit for a personal project that involves using a PWM signal send a square wave to a speaker. I've tested this circuit and it works, I only need the speaker to play different ...
- 51
1 vote
1 answer
85 views
Inverter rotary switch connection
I am building a single phase voltage inverter.I have this circuit: The MOSFETs will be power mosfets and the user will be able to select the dc input voltage he wants and this circuit will convert ...
- 498
4 votes
1 answer
671 views
What is this component? Is it some type of potentiometer or rotary encoder?
I am trying to repair a board pulled from a Ziegler fire truck. There is a knob that controls the flow of water through the Graf-Syteco brand HMI panel. The knob has come free and I need to find a ...
- 43
-1 votes
1 answer
187 views
What type of potentiometer is this?
The value of a rotatory potentiometer is 1K. It is connected to a 5.1V power supply. The output values from centre of potetntiometer with respect to the angle are given below: 70° - 1 V 145° - 2.04 ...
- 485
2 votes
2 answers
146 views
Using resistors to "limit" the range of a potentiometer output voltage
So I want to use a potentiometer and two resistors to scale down a DC voltage to any voltage that is smaller This picture is from the schematic of a analogue synth I want to build. (ericasynth DIY ...
- 33
0 votes
1 answer
154 views
Identify this potentiometer for a speaker
The volume knob on my speaker broke off but I can't seem to find the part number anywhere. It looks like a 2 gang pot since it has 6 pins. The speaker model # is JBL LSR305
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