Temperature Coefficient:	±1000ppm/°C
Mounting Type:	Panel Mount
Bushing Thread:	M9 x 0.75
Actuator Diameter:	0.236" (6.00mm)
Actuator Length:	0.945" (24.00mm)
Actuator Type:	Slotted
Termination Style:	PC Pins
Resistive Material:	Conductive Plastic
Adjustment Type:	Top Adjustment
Rotation:	300°
Number of Turns:	1
Series:	PC-Slimline
Power (Watts):	0.75W, 3/4W
Built in Switch:	None
Number of Gangs:	1
Tolerance:	±20%
Resistance (Ohms):	10k
Taper:	Linear
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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Rotary Potentiometers, Rheostats: PCW1D-R24-BAB103L Application Field and Working Principle

Introduction

Rotary Potentiometers and Rheostats are two types of variable resistances used for a variety of purposes within electronics. Both these devices provide a means to control the passage of electrical current from point A to point B. A Rotary Potentiometer is a three-terminal resistive component with one adjustable arm which can sweep around a full rotation; whereas, a Rheostat is a two-terminal variable resistor used to regulate the current in a circuit. In terms of the electrical principle, Rotary Potentiometers and Rheostats work similarly, but have different characteristics and, consequently, applications. This article deals with one particular type of Rotary Potentiometer, the PCW1D-R24-BAB103L, and discusses its application fields and working principles.

Application Field

The PCW1D-R24-BAB103L is a Water-Resistant, carbon disk-type Rotary Potentiometer. It is designed to be used in high-temperature and humid environments. Typical applications include temperature, pressure, and speed control in consumer appliances and industrial applications, such as electronic instruments, home appliances, industrial robots, and automatic equipment, etc. The PCW1D-R24-BAB103L is a low-cost, reliable, and accurate solution for when variable resistance is required.

Working Principle

The PCW1D-R24-BAB103L is made of three components: a carbon disk, a wiper, and a terminal. The carbon disk serves as the resistive element in the Potentiometer. Its resistivity is dependent on the amount of pressure applied to it as the wiper is moved across its surface. This pressure can be generated mechanically by the wiper, via a spring-loaded mechanism, or by condensation generated by the external environment.The wiper is connected to a single terminal, which is usually labeled as "W" since this is the terminal that is "wiped" across the resistive surface. The two other terminals, labeled "R" and "B" (for resistance and balanced), are supplied with voltages at opposite ends of the resistive element to provide symmetrical ranges of motion.When the "W" terminal is moved across the resistive surface, different amounts of electrical current can flow from the two other terminals, relative to the position of the wiper. In this way, the PCW1D-R24-BAB103L can be used to control the amount of current that flows to a certain electronic circuit.

Conclusion

The PCW1D-R24-BAB103L is a Water-Resistant, carbon disk-type Potentiometer that is designed for use in high-temperature and humid environments. It is a reliable, accurate, and lowcost solution for variable resistance in a wide range of applications. The working principle of the PCW1D-R24-BAB103L involves the movement of a wiper that is connected to a single terminal over the resistive surface of a carbon disk, generating pressure in order to control the amount of electrical current that flows between the two other terminals.

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