RJ12FP103

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Trimmer Potentiometers

RJ12FP103 is a trimmer potentiometer. It is an adjustable electrical device having three terminals, usually used to vary an electric current or voltage in electronic circuits and equipment. It is particularly suited for applications that require a low-profile, precision, and high-reliability adjustment of resistance.

Application Field

The RJ12FP103 is designed for use in general-purpose electronic equipment, such as stereo systems, medical equipment, automotive instrumentation, and industrial controls. It is also suitable for air conditioning, thermostat regulation, altitude measurement systems, optical equipment, and various robotics projects.

In specific applications, the trimmer can be used for adjusting gain or roll-off of filters, for trimming the frequency of an oscillator, for setting the operating point of an amplifier or circuit, for adjusting the level of a microphone or signal amplifier, and for adjustment of the operating range for various sensors.

Working Principle

The RJ12FP103 consists of a resistive element and two electrical terminals for adjustment, which are usually connected on both ends of the resistive element. The resistive element is adjusted by the user using an adjusting tool. The resulting change in resistance affects the size and form of the electrical current in the circuit.

The adjustment is effected by a setting mechanism that is located within the trimmer. The mechanism consists of a rotating cap and an adjustable contact. The contact is linked to the adjustment control on the exterior of the trimmer. When the user turns the adjustment control, the contact rotates against/over the resistive element, thereby changing the resistance of the circuit.

In addition, the trimmer has a built-in heating element. This element is used to limit or extend temperature sensitivity during adjustment.

Conclusion

The RJ12FP103 trimmer potentiometer is a reliable and cost-effective device that is widely used in a variety of electronic equipment. It is designed to provide the user with a low-profile, precision, and high-reliability adjustment of resistance for various applications.

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