Pin type WH138-4 potentiometer with switch dimmer switch speed controller

Application:

Ideal for multimedia, computer speaker, stereos amplifier, lighting regulation etc.

Description:

Rorary potentiometer is a manually adjustable variable resistor with 3 terminals. Two terminals are connected to both ends of a resistive element, and the third terminal connects to a sliding contact, called a wiper, moving over the resistive element. The position of the wiper determines the output voltage of the potentiometer. The potentiometer essentially functions as a variable voltage divider. The resistive element can be seen as two resistors in series(potentiometer resistance), where the wiper position determines the resistance ratio of the first resistor to the second resistor.

Features:

• Rotary type with switch

• Carbon composition

• Top adjustment

• 6mm knurled shaft

• Special tapers

Mechanical specifications:

Electrical specifications:

A wide variety of potentiometers exist. Manually adjustable potentiometers can be divided into rotary or linear movement types. The tables below list the available types and their applications of rotary potentiometer:

The taper of a potentiometer is normally indicated with a letter. The following table lists the used coding for potentiometer taper, different standards uses the same letters which can be confusing. It is always a good idea to double check the taper by measurement.

Dimension:

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