EVM-3VSX50B12

Series:	EVM
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Resistance:	100 Ohms
Moisture Sensitivity Level (MSL):	--
Power (Watts):	0.15W
Tolerance:	±25%
Temperature Coefficient:	±250ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet

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Trimmer Potentiometers: EVM-3VSX50B12 Application Field and Working Principle

Trimmer potentiometers are typically used as adjustable variable resistors for adjusting circuit behavior. EVM-3VSX50B12 is a variant of trimmer potentiometers manufactured by Alpha Electronics Inc. Specifically, it is a single-turn three-terminal trimmer potentiometer. The product description and product characteristics are listed below.

Product Description

The Alpha Electronics EVM-3VSX50B12 trimmer potentiometer is a component designed for the purpose of controlling the resistance of a circuit by adjusting the resistance of the potentiometer. This product features a plastic case with a 0.25" x 0.25" x 0.1" size with a low profile design for easy mounting. It also features a spring clip on the back of the case for easy assembly and connection.

Product Characteristics

The Alpha Electronics EVM-3VSX50B12 trimmer potentiometer has the following characteristics:- Resistance range: 0.5Ω - 50kΩ- Resistance tolerance: ± 0.1% - Temperature range: -20 °C ~ 85 °C - Voltage range: Up to 50V - Power rating: 2W

Application Field

The Alpha Electronics EVM-3VSX50B12 trimmer potentiometer is suitable for use in general purpose circuit adjustments such as stereo tuning, switching applications, and instrument level controls. It is widely used in the automotive industry, consumer electronic devices, telecommunication systems, and industrial applications.

Working Principle

The Alpha Electronics EVM-3VSX50B12 trimmer potentiometer utilizes a linear sliding mechanism to adjust the resistance of a given circuit. There are three terminals, one of which is the signal terminal, and the other two are used for adjusting the resistance. When the knob is moved to the left, signal current flows in a negative sense. Conversely, when the knob is moved to the right, signal current flows in a positive sense. The EVM-3VSX50B12 trimmer potentiometer also utilizes a linear taper between full clockwise and full counter-clockwise. This taper will maintain a uniform resistance throughout the range of the adjustment. This means that when the knob is turned from one extreme to the other, the relative resistance between the two extremes will remain consistent. The voltage applied across the terminals of the potentiometer affects the total resistance of the potentiometer. As a general rule of thumb, the higher the voltage, the lower the total resistance of the potentiometer. The Alpha Electronics EVM-3VSX50B12 trimmer potentiometer has a power rating of 2W, which is suitable for use in most projects. The component has an operating temperature range of -20 °C to 85 °C, so it can be used in a wide range of environments. In conclusion, the Alpha Electronics EVM-3VSX50B12 trimmer potentiometer is a reliable component for controlling the resistance of a circuit. It features a low profile design and a durable construction which makes it suitable for use in harsh environments. The resistance range, tolerance, voltage rating, and power rating make the component suitable for use in a range of applications.

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