ST4EG503

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Trimmer potentiometers are small adjustable resistors typically used to calibrate circuits, such as radio, TV and electronic test equipment. ST4EG503 is a device that belongs to the category of trimmer potentiometers. This article will analyze the application field and working principle of this device.

Firstly, let’s see the application field of ST4EG503. This device is commonly used for audio applications, such as volume adjustment for audio circuits. Furthermore, it is widely used as a linear variable resistor in medical equipment, measuring instruments and industrial equipment. It works well as a voltage divider in the application of adjusting the voltage range for power supply. As a result, ST4EG503 is widely used in many different fields.

Next, let’s talk about the working principle of ST4EG503. This device uses a delicate mounting material, which has two layers one of carbon, and one of copper which is the contact layer. When the contact layer of the device is moved via a shaft, the resistance between the resistive element and the contact layer changes. Since the resistive element is connected in series, the more it is moved, the higher resistance it provides. In this way, ST4EG503 works as a linear variable resistor and provide a smooth and accurate tuning of the resistance value.

In conclusion, ST4EG503 is a trimmer potentiometer and it is widely used in audio applications, medical equipment, measuring instruments and industrial equipment. It works well as a linear variable resistor and the resistance comes from the resistive element and the contact layer. When the contact layer is moved, the resistance changes accordingly.

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