Trimmer Potentiometers

A trimmer potentiometer, or trimpot, is a small, independent adjustable electronic component that can be used to “trim” or adjust the parameters of a circuit. It’s widely used in the electronics industry to adjust the performance of operational amplifiers, tuning filters, and feedback loops. Trimpots are commonly used in radio receivers, TV sets, and other circuits that require adjustment.

Usually, trimmer potentiometers have three terminals and range in value from 10 kΩ to 500 kΩ. The 36 WR 500 kΩ trimpot is particularly notable since it has a rotation of 3600 and a power rating of 1/2 watt. It is usually used to adjust the power level, bias voltage, or current levels, or to help tune the frequency of Communication circuits.

36 WR 500 kΩ Trimpot Application Field and Working Principle

Application Field

The 36 WR 500 kΩ trimpot is used for a variety of applications, such as adjusting the feedback control of operational amplifiers, selecting the control points of filter networks, and controlling the output current of drivers. It’s also common in analog-digital converters, radios, television equipment, as well as audio systems.

Working Principle

The trimpot works by controlling the resistance of a variable resistor. The resistance can be adjusted with the help of contact remains connected along the length of a semiconductor track. When the contact is rotated, the resistance of the track varies, thus changing the resistance between the two terminals. The performance of the circuit can be adjusted by changing the resistance.

The 36 WR 500 kΩ trimpot is designed with a total rotation of 3600, with each 180° denoting 10% of the total resistance. The bottom plate is made of resin to prevent conductivity, which further helps maintain the performance of the circuit. The contact remains of 36 WR 500 kΩ trimpot are made of Bakelite, which is known for its mechanical and electrical insulation properties.

Conclusion

The 36 WR 500 kΩ trimpot is an excellent choice for adjusting the output parameters of electronic circuits. It has a good power rating, a wide range of operation, and the top plate is designed with a good vinyl product which helps prevent short circuits. It is widely used in the fields of television equipment, radios, audio equipment, and more, thanks to its simple design and easy to adjust properties.