Questions tagged [trimmer]

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Is it possible to rig a trimmer to run both on its battery and directly from the charger? [closed]

To let you all know the level of my understanding of this topic, I don't have the basic concepts of these things but I am very much into electronics and do projects like this one as a hobby. I have ...
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1answer
63 views

Missing component identification

I have a remote controller whose antenna is de-soldered and it seems there was a capacitor or a resistor (see red circle). Can anyone help me to understand what component could be the missing one? I ...
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2answers
76 views

Can not fine tune Colpitts oscillator with crystal

I'm trying to design a cheap Video Synth. In order to do it, I need to provide my Arduino Nano with some external clock so it can drive the Timer that generates the complex video pulses I need. What ...
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2answers
79 views

Need help identifying and finding similar SMD variable resistor

The component appears to be damaged, but the datasheet for the board in question shows that this is a 47k ohm variable resistor. Looks like a trimmer, but not 100% sure. However, I've been trying to ...
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0answers
105 views

TZC3 capacitor restrict area underneath

I am going to use TZC3 family trimmer capacitors from Murata (datasheet, skip to TZC3 section). It has one of its terminals very close to the mounting surface, and theoretically if rotor is pressed ...
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2answers
162 views

replacing a 2k resistor with a 1k and trimmer - wiring

I have a question about wiring up a trimmer in this circuit (NE555 - piano module) I have no background in electronics so please bear with me. One of the keys in the 'piano' sounds just off tune, so I ...
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3answers
542 views

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 ...
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1answer
112 views

What's the proper name for “annular potentiometer”?

I'm looking for a potentiometer without the shaft. It should be like a ring, in annular shape, so it can be mounted on an existing shaft. I don't find anything, but I'm afraid I'm not using the ...
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1answer
193 views

Combined temperature coefficient of LM741 and trimmer pot for null offset

I want to use a 10k trimmer pot with a 250ppm/°C tempco for offsetting input offset voltage of an LM741 op-amp. Cermet potentiometer temperature coefficients partially answers my question. And the ...
1
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2answers
172 views

Proper or instinctive design choices for trimpot direction [closed]

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 "...
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1answer
560 views

Trimpot potentiometer rotational life Vs load life

I'm dealing with an application which makes use of an adjustable linear voltage regulator (LT3080). A trimpot potentiometer is used in place of the set resistance Rset to regulate the output voltage. ...
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3answers
183 views

Trimmer Capacitor/Inductor stability

I am considering using either a trimmer capacitor or inductor combination with the other fixed valued component to create LC tuned filter for 1MHz. I want the system's resonant frequency to remain ...