EVM-EGSA00B22

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Trimmer potentiometers, such as the EVM-EGSA00B22, are miniature electronic adjustable resistors that can trim or fine-tune equipment settings to optimize performance. They are particularly useful for precision control and calibration of electronic circuits. This article will discuss the EVM-EGSA00B22’s application field and working principle.

The EVM-EGSA00B22 is a single-turn trimmer potentiometer with a 0.365” body size. This trimmer is used mainly to adjust the resistance value of a circuit, allowing users to optimize circuit functions and outputs without replacing components or modifying the circuit connections. This trimmer is also often used in engineering and product development, just like most trimmer potentiometers, to adjust and fine-tune parameters in prototypes or production equipment.

The EVM-EGSA00B22 has a ceramic based element with two wire conductive coils, fine-adjustable wiper, and 3 to 5 pin plastic body. It features a very high resolution of 9 – 24 mΩ and an electrical life of 100,000 cycles. It also has a wide operating temperature range of -30°C to +90°C. Finally, it also offers excellent linearity, low temperature coefficient, and volume stability. These features make the EVM-EGSA00B22 an ideal choice for adjusting and fine-tuning parameters in precise industrial and consumer applications.

The working principle of the EVM-EGSA00B22 is relatively simple. It consists of two parts: a wiper and a resistive element. The two parts are electrically isolated from each other by a thin dielectric material, typically ceramic. The wiper is what adjusts the resistance value of the device. When it is moved up, the resistance increases; when it is moved down, the resistance decreases. The resistive element is what sets the upper and lower limits of the resistance. Once set, the range of resistance can be adjusted by moving the wiper up and down.

Another important element of the trimmer potentiometer is its contact resistance. Contact resistance is the resistance between the wiper and the resistive element. Ideally, the EVM-EGSA00B22 should have a contact resistance of less than 10Ω. This ensures that no energy is lost between the wiper and the resistive element, allowing the circuit to perform optimally.

The EVM-EGSA00B22 is a versatile trimmer potentiometer and is used extensively in the consumer electronics, automotive, and industrial markets. It is an ideal choice for precision circuit calibration, adjustment, and fine-tuning. The small form factor, high resolution, electrical life, and wide operating temperature range make this trimmer an ideal choice for critical current regulation and rate reversal applications. With its reliable performance and robust design, it is an excellent choice for a wide range of adjustment and calibration needs.

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