381N500

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Rotary Potentiometers and Rheostats both play a vital role in the production of many electronic devices, measuring and controlling electrical energy. The 381N500 is an example of such a device, giving reliable readings and control of electrical energy. This article will give an overview of the 381N500 application field and working principle.

Rotary Potentiometers are electrical resistors with three terminals, consisting of a resistance element like carbon or metal film and a sliding contact, called a wiper, that moves along the resistor element. The wiper position determines the amount of resistance in the circuit, making it possible to derive a wide range of distinct signals from a single resistance element. They are used widely among electrical industries, for many applications including volume control in audio equipment, light dimming as well as motor speed control.

The 381N500 is a three-terminal variable resistor with a maximum rating of 500 Ohms. It features a standard linear taper, with linear displacement providing an effective and efficient way to adjust the resistance. It is designed to handle up to 100V DC and has a fully sealed construction for dust and moisture resistance. This prevents the wiper from shorting out and ensures accurate readings even under adverse conditions. The adjustable range is 250 Ohms to 500 Ohms, giving great flexibility over the range of outputs.

Rheostats, like potentiometers, consist of a resistor with a sliding contact, but while potentiometers vary resistance over a range of fixed stops, a rheostat produces a continuously variable range of resistances between two contacts. A rheostat is an ideal choice when precise control of a variable resistance is needed. Applications include fan speed control, audio level control, and current limiting circuits.

The 381N500 is a rheostat with a rotary drive that features a standard linear taper and easily adjustable resistance range. It features an anti-surge design, allowing for smooth transition from one setting to the next. The adjustable reach is 250 Ohms to 500 Ohms, with 500 Ohms as the limit. This is a great range for most applications which require a variable resistance, allowing for precise control in a variety of circuits.

The 381N500 is an ideal device for many electrical engineering applications, providing reliable readings and control of electrical energy over a variable resistance range. The rheostat’s rotary drive and linear taper makes it an ideal choice for fan speed control, audio level control, and current limiting circuits. It is also designed to handle up to 100V DC and has a fully sealed construction for dust and moisture resistance, making it a great choice for applications in even the most rugged and challenging environments.

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