72XR500LFTB Potentiometers, Variable Resistors

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Trimmer Potentiometers, or “trim pots”, are small, adjustable potentiometers used to fine-tune electrical signals. They are usually found in electronics, and are used to fine tune an electrical system, such as a radio or amplifier. Trimmer potentiometers are a class of rotary electrical components, consisting of a rotary spindle that connects three contacts: typically two outputs and one ground, or a single input and two outputs, such that the resistance between the two output contacts can be varied. This is achieved by a drive mechanism that turns the spindle, while holding the body stationary, to move one contact along a resistive track, thus changing the resistance between the two output contacts.

The 72XR500LFTB is a standard trim pot, using the semiconductor resistance technology of Thin Film to make its contact size smaller and produce a lower profile. It offers superior properties than regular trim pots due to its high resistance accuracy and temperature stability that makes it ideal for fine-tuning of power amplifiers and other applications which require precise resistive adjustments. The 72XR500LFTB provides a resistance range of 0.5Ohm to 500 Ohm, with a Tolerance of 0.2% and a Temperature Coefficient of 0.25%.

As with most trim pots, the 72XR500LFTB can be used for a variety of applications. The most common uses include adjusting volume and tone in audio equipment, controlling transimpedance in voltage-to-current converters, and the adjustment of power supply levels. In addition, it can also be used as an overall feedback control, or as an amplifier gain adjuster. The 72XR500LFTB is also commonly used in the calibration and adjustment of distributed gain parameters, such as in AC-based systems.

The working principle of the 72XR500LFTB is quite simple. By rotating the spindle, one contacts moves along a resistive track to provide a variable resistance. This resistance is determined by the length of the resistive track, as well as its resistance value. The resistance between the two output contacts can be adjusted by turning the spindle. This provides a way to “tune” the electrical signal, allowing it to be fine-tuned to your needs.

The 72XR500LFTB is an incredibly useful and versatile tool that can be used in a variety of applications. With its low profile, high resistance accuracy, and temperature stability, the 72XR500LFTB is an ideal choice for anyone looking for a reliable and precise trim pot. So, if you need to make precise resistive adjustments, the 72XR500LFTB should be your go-to trimmer potentiometer.

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