Trimmer Resistors

What are trimmer potentiometers?


Trimmer potentiometers, sometimes referred to as trim pots or trimmer resistors are a type of adjustable potentiometer (variable resistor). They are used to calibrate and fine-tune circuits. Trimmer potentiometers are typically constructed from cermet or have a carbon composition. They can be mounted directly onto PCBs (printed circuit boards).


Trimmer potentiometers are not adjusted very frequently. You can think of them as a ’set and forget’ component. Trim pots let you set (or trim) the resistance to obtain a very precise current, output voltage or gain. Once the value has been set, it is unlikely that you’ll need to adjust the trimmer again unless you need to recalibrate the circuit.


Can I replace a normal potentiometer with a trimmer potentiometer?


Yes, you can. However, trimmer potentiometers are typically more expensive than standard potentiometers with a fixed resistance rating. It is also worth bearing in mind the difference in lifespan too. Many potentiometers have a lifespan that allows for hundreds of thousands of cycles. Trimmer potentiometers typically have a lifespan of a few hundred cycles (at best). Trim pots also tend to take up more space on a PCB than a standard potentiometer.


Do I need a single turn or multiturn trim pot?


This completely depends on the intended application of the trim pot. Multiturn trimmer pots tend to have a higher resolution than single turn models. A single turn trimmer potentiometer is ideal for applications where a resolution of one turn is enough.


Adjustment types


Trimmer potentiometers are normally adjusted by hand (you can turn the adjustment knob with your fingers), with a screwdriver or with a specialised adjustment tool designed for use with a particular model or series.


...
Lees meer Lees minder

Filters

2521 - 2523 van 2523 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Maximum Resistance Mounting Type Number of Turns Orientation Power Rating Series Termination Style Length Tolerance Depth Temperature Coefficient Height Dimensions Maximum Voltage Rating
RS-stocknr. 2508317927
Fabrikantnummer3352H-1-103LF
FabrikantBourns
€ 1,00
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 2508317107
Fabrikantnummer3299Y-1-204LF
FabrikantBourns
€ 2,34
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 2509641657
Fabrikantnummer3009P-1-503LF
FabrikantBourns
€ 2,18
Each
Aantal stuks
- - - - - - - - - - - - - -
Related Products
Bourns® 3386 3/8" Square Single Turn Cermet Trimming ...
Description:
Bourns® 3386 3/8" Square Single Turn Cermet Trimming Potentiometer (Trimpot®). Wide choice of styles including finger adjustSealed to withstand immersion board washingMoulded body with built-in PCB stand-offs.
Height 10.41mm. Sealed to withstand immersion board washingFlame ...
Description:
Height 10.41mm. Sealed to withstand immersion board washingFlame retardent plastic housingMoulded body with built in stand offsSolid end stopIC style pins for PCB assembly.
Bourns 3296 series Square trimpot trimming potentiometer/ resistor ...
Description:
Bourns 3296 series Square trimpot trimming potentiometer/ resistor perform a variety of circuit adjustments in all types of electronic equipment, These through hole trimmers feature a slim body profile, sealed to withstand immersion board washing. It also has a larger ...
Dust-proof constructionHigh reliability wiper achieves 1M cyclesSuitable for ...
Description:
Dust-proof constructionHigh reliability wiper achieves 1M cyclesSuitable for automotive and audio equipment4 dia D formation thru-hole rotor allows selection of any kind of gear shapeSupplied SMD or leaded.