Questions tagged [potentiometer]

mechanically-adjustable special-type variable resistor with 3 legs and it is used as a potential-divider. (It is not a meter at-all, but got the name from its historical ancestor which was a meter.)

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41 views

Identify an ALPS potentiometer

This potentiometer reads between 0 and 115K as I rotate the shaft. The wedged part of the shaft is 10mm. Can anyone identify the part number?
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1answer
68 views

What is control voltage? [closed]

i have a motor driver, which has a control voltage (5V). I would like to ask, what is this voltage for and can i connect to it a potentiometer? Thank you in advance!
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47 views

ATMega328P control servo motor speed with potentiometer

I'm trying to develop an application in atmel studio 7.0 which will allow me to control the speed of my servo motor with my potentiometer. Now, the problem is that I don't really know how to do that? ...
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1answer
89 views

Solder joint only working while solder is still liquid

I am wiring an electric guitar. Part of the wiring process is a tone capacitor (0.022 µF) which is attached to a linear taper potentiometer, when the potentiometer is turned, the capacitor is ...
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1answer
59 views

How to identify specs of guitar pots and capacitors?

I have a 1986 Gibson Les Paul Custom. Looking into the control cavity, I see that all four potentiometers are stamped R1378511. The two tone pots also have the code 71-079 stamped on them. I cannot ...
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45 views

PC Racing Pedals

I have very limited knowledge of electrical engineering and mechanics (I'm hoping to learn) so please forgive me if this is a stupid/noobish question. I've been thinking about making a steering wheel ...
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3answers
85 views

LED brightness stability issues - how to fix?

I am performing an imaging experiment in which LED stability is critical. I use 2-3 red LEDs to illuminate a surface while imaging that surface. In each LED circuit, I use a constant-voltage ...
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3answers
66 views

Implementing digital control on analog potentiometer [closed]

I have an analog sound processor unit, which uses either ICs or spare components. There are four controls, which are simple potentiometers. I would like to control their levels digitally, storing the ...
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2answers
160 views

Gain of Non-Inverting Amplifier Does Not vary with Resistor Values

I am trying to build a non-inverting amplifier using a LM7171 op amp, and I am implementing it with potentiometers as Rf and R2 so that I can smoothly control the gain of the amplifier (and easily ...
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43 views

Measuring variable resistance as voltage value

I would like to replace the microcontroller of an old gamepad with a Arduino/Teensy board. To do this, I need to connect all buttons and the output of the 4 potentiometers of the gamepad's joysticks ...
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2answers
50 views

How to read potentiometer value in existing circuit

I built a circuit for heater controller and it works fine. I want to read poentiometer R3 values with microcontroller Arduino. I am not sure if I am doing correct way, but I connected Arduino analog ...
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1answer
27 views

Resistance/Voltage relation in Rheostat?

According to "How Computers Work" (Tenth Edition) by Ron White, he features a graphic of a potentiometer with three terminals on the bottom with the one on the left being for current flowing in and ...
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14 views

Low range of voltage from a potentiometer connected to Toolstick card Silicon Labs

I have a linear potentiometer of 10k ohms which I connected to a toolstick Card (a microcontroller distributed by Silicon Labs). I used the ADC of the card to convert the analog voltage to digital ...
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21 views

How to wire 4 pin slide potentiometer? [duplicate]

I was wondering how to wire a 4 pin slide potentiometer. I found this previous question but was wondering what the numbers actually meant: Potentiometer with four pins?.
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2answers
43 views

potentiometer like rotation angle sensor

I have a set of flight simulator gauges which use a motor to move various indicators. The rotary position of the indicator is measured with a potentiometer like device, but it has 5 terminals instead ...
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1answer
65 views

Digital potentiometer - different voltage

What would be the "correct" way to replace an analogue potentiometer with a microcontroller controlled digitalpotentiometer, when the require voltage is higher than what the chip can support? In more ...
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2answers
76 views

electronic dc voltage regulator controlled by arduino

i am new to the electronic things so please help me figure out a solution. I am looking for a way to control voltage by Arduino of my 60volt 10 amp dc power supply i.e to get any voltage from 0 to 60 ...
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28 views

Current Controlled Potentiometer

The core problem I am having is that I need to be able to control a DC to DC voltage regulator based on input from a 4 to 20 mA signal. The end goal is to have the output voltage of this regulator be ...
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4answers
124 views

Potentiometer warm up issue

I have a microcentrifuge which has a DC motor rated 24V, 10 Watt and 7000 rpm. I have attached one 5W, 500 Ohm potentiometer with it to control the speed and it works fine without heating up. ...
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2answers
2k views

Potentiometer like component

Okay you might get this a lot around here; I'm trying to figure out the inner workings of this specific potentiometer like component. I want to get my hands on the datasheet or a similar components ...
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2answers
125 views

Steps to replace a 10k ohm pot with a 10 ohm pot

I was about to build an all-in-one board for a retropie computer inside a gameboy advance sp shell, when I found this board that already was made and shared by someone else. I have a different ...
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1answer
42 views

Potentiometer/trimpot range 503 vs 103 with a resistor in series

Small intro: I'm adapting this NE555+CD4017 module to fit into a nice little box and I am switching out the plastic trimpot that came with the package for a metal one that can fit through wood. The ...
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2answers
181 views

Potentiometer overheating

I have a 10 kilohm potentiometer being powered by a twelve volt battery. After I run the circuit, the potentiometer begins to overheat. I thought that a 10 kilohm potentiometer could take 12 volts. ...
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1answer
49 views

How to add a Linear and Logarithmic Potentiometer in Circuit Wizard

I'm new in this kind of thing and I'm using Circuit Wizard (Circuit Simulation Software). I was trying to simulate an overdrive pedal circuit (https://www.instructables.com/id/Overdrive-Pedal/) in ...
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0answers
47 views

Does potentiometer accuracy change with degree of movement?

I want to use a conductive plastic potentiometer for my actuator application where movement is +/- 40 degrees. As in datasheet, the potentiometer linearity is given as +/-0.2 % which I think is for ...
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62 views

Equivalent replacement for a centered 4pin potentiometer? [duplicate]

I need some help in understanding the pots pictured above. How does this 4pin pot work? What is the function of the 4th pin? Would this be the correct replacement if I want to replace the centered ...
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2answers
92 views

How do I connect a four way key in a potentiometer?

I asked this question in Physics stack exchange and had an answer, but I couldn't understand it well. A comment said this stack exchange was a better fit for the question. Question: How do I connect ...
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1answer
52 views

How to find current through series of potentiometers, and if it is safe for potentiometers? (Arduino)

I have 9 potentiometer with the specs: 10k Ohms and 0.5W I'm using an Arduino Mega, and using it's 5V port output to power these potentiometers in series, and I saw online that the max current this ...
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1answer
43 views

Replace potentiometer for Kemo M012 Power Control

The potentiometer of my (Kemo M012 Power Control) is mechanically broken and I would like to replace it. However, I am unsure whether the replacement needs to meet any specific characteristics or if ...
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1answer
48 views

Potentiometer value goes up and then down again

I have 16 potentiometers of the same value (with some tolerance) like this. The wipers go to muxers and then to ADC pins of a micro-controller. On the breadboard this worked fine (using only a few ...
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2answers
86 views

Can a 3W pot be connected to a 5W LED baton? [closed]

Situation: I got a LED baton and the brightness was higher than required. I added a regular 22k pot in series to it, and achieved lower brightness, but within a few seconds, the pot was burnt. I ...
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2answers
102 views

What is the second resistor for in this potentiometer reference circuit?

In the reference circuit from this datasheet for a potentiometer, what is RL for? Why did they pick 100 x R? Bonus question, how do I pick a good value for C?
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2answers
36 views

How to proportion hydraulic flow using potentiometer and MOSFET

I am working on solving a problem that we generally deal with in a mechanical fashion. We have a hydraulic system with a dumb controller and a dumb valve stack. We can change the valve stack solenoids ...
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2answers
136 views

Mono to Stereo Pan Knob

I am trying to make a small box to take the mono audio output form my analog synth and run it through a panning knob so I can control where in the stereo mix the mono signal is placed. The goal is to ...
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1answer
139 views

Potentiometer min and max value

I purchased several of these to drive high power LEDs on a custom project : https://www.amazon.com/gp/product/B019W4C5IE/ref=ppx_od_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 These LEDs are to be ...
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24 views

Potentiometer Selection for Fan Speed Control [duplicate]

I am making a stir plate out of an old PC fan, variable resistor, and DC power supply from this tutorial. I have two power supply's to choose from, their outputs are: PS1 = 12Vdc, 2A PS2 = 12Vdc, ...
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2answers
154 views

PC fan speed control

I am making a stir plate out of an old PC fan, variable resistor, and DC power supply from this tutorial. I have two power supply's to choose from, their outputs are: PS1 = 12Vdc, 2A PS2 = 12Vdc, ...
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1answer
157 views

How to choose the right potentiometer for dimming a LED

I have a reading lamp from IKEA. It has a bright LED. Too bright for my taste. So I inspected it and it is composed of a DC power supply unit that outputs 7V and a maximum of 3W. The LED unit is ...
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2answers
106 views

Swapping two 500kohm pots with one MCP42010 10k ohm digital pot

What additional elements do I need in my circuit to compensate for changing a pair of manual 500k ohm pots to a pair of digital 10 ohms? I'm a beginner implementing an Atari Punk Console on Raspberry ...
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2answers
89 views

Analog Potentiometer Output to USB Serial [closed]

I‘m working on a project which has several switches and potentiometers that will be used to control parameters in software via (e.g.) MIDI and would like to know how to get the pots set up without ...
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1answer
96 views

Why not use the same size resistors for each stage in a Kevin-Varley divider?

I was thinking of building myself a Kevin-Varley divider as described for example in this article about a mini metrology lab in the March 1996 issue of Electronis Now by Conrad R. Hoffman. The normal ...
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1answer
137 views

Converting 0 - 80 V to 0 - 3.3 V range [duplicate]

I need to design a circuit so that it can convert 0 - 80 V DC to 0 - 3.3V DC. I need to give the output of a battery which is in the range of 0 - 80 V to an STM32F103 microcontroller. Since the ...
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0answers
25 views

Position sensor PS732 feinmetall

I'm redesigning a board in order to use this sensor datasheet. After reading the datasheet I have missed the potentiometer principle from third picture where this can be seen: You can see how Rp is ...
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1answer
38 views

R series by terminal A in a potentiometer

I have a question to clarify about potentiometers. Maybe the question is something silly or obvious, but I would like clarification because I'm not so sure about it and I need to be so as not to miss ...
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1answer
107 views

Potentiometer for TL081 [closed]

What kind of potentiometer (resistance) would be suitable to connect to the Offset pins on the TL081 Op amp, when used with +/-15V? And if I choose to omit the pot altogether, roughly speaking, how ...
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2answers
42 views

Automated equivalents of Potentiometers

I am currently working on a project to create an amplifier which can use both physical and digital inputs to change the resistance of a potentiometer. Is this possible without using sliders? I know ...
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1answer
70 views

Can I use X9C102 digitally controlled potentiometer on AC voltage?

I am working on a project to make a dimmer using the triac and a photocoupler, and I want to know if I can use a digital potentiometer to regulate the intensity of the light. I know it works for ...
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1answer
88 views

LM317HV power supply

I have a few questions regarding the following schematics: ![/imga] ![/imgb] Initially I was testing the first schematic to see if it works good. The result of the tests were good, the power supply ...
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1answer
69 views

Why is the potentiometer setup in this configuration in this 555 circuit

I just started learning about chips and signals using the book Make: Electronics, in one of the circuits, used to generate a pulse in Monostable mode a potentiometer is used to vary the pulse length....
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2answers
178 views

Two potentiometers to control the range limits of a voltage source

I would like to control the range of an input voltage source using two potentiometers to establish the limits of the signal. First pot determines limit 1 and second pot determines limit 2. Lets say, ...