Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [trimpots]

7 questions
4
votes
3 answers

Any possibility of dead short in trim pot

I want to add one trimpot of 1K in my ADC board to test several analog channels. I thought of connecting two ends to VCC and GND and middle pin (wiper) to analog input. But I am not sure if I need to add any additional resistor on one of the sides…
Rajesh
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Is a resistor trimmer a good idea for adjusting the gain of an op amp circuit?

I'm designing this circuit to measure temperature with PT100. R10 must be calibrated to obtain the desired gain. I have thought of using a resistor trimmer to adjust the gain similar to the following: Considering that the humidity and temperature…
Fabián Romo
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2 answers

Proper or instinctive design choices for trimpot direction

We all know its customary for a VOLUME control on any audio product should require turning CW to make it louder. In fact for user accessible rotary adjustments, clockwise almost universally means "more". This despite the fact that all plumbing…
Randy
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Repairing a control board for an automatic gate opener, it has a faulty trimpot 100k 906k

FAAC control board 12 V has a faulty trimmer (single turn rotary carbon). I could not find the exact values in a replacement part. Can I use one with the values 705 100k? It is used to adjust the opening/closing time. The original values are 100k…
Tom Williams
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1 answer

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 trouble is, only now I see that the trimpot that…
iridian
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Fan voltage fluctuating with potentiometer

I am driving a two side by side fans (original Xbox 360) from 20v, 4A source via a 12v regulator and a 10k trim potentiometer. The goal is simply to adjust voltage between 3v-12v, nothing I havent done before but shortly after setting the fans to…
sryan2580
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Trimpot Connection with full rotation

I have a trimpot code(502) that after many searches I cant find the correct way to connect it the way I want and of course if it can be done. As usual all potentiometers and trimpots as searched around the net are using the classic way of connection…
Nocs
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