WH28-T B100K 5-Pin Pulley Potentiometer Belt Drive Switch
WH28-T B100K 5-Pin Pulley Potentiometer Belt Drive Switch
WH28-T B100K 5-Pin Pulley Potentiometer with Belt Drive
The WH28-T B100K 5-Pin Pulley Potentiometer is a compact, reliable rotary control component designed for electronics projects, audio equipment, and DIY circuit builds. Featuring a pulley-style belt drive mechanism, this potentiometer offers smooth rotational control with a B100K resistance taper — making it an excellent choice for engineers, hobbyists, and repair technicians who need precise, consistent signal adjustment.
Crafted from durable plastic and metal materials, this potentiometer is built to handle regular use in a variety of electronic assemblies. Its 5-pin configuration ensures stable connectivity, while the pulley design allows belt-driven actuation for panel-mounted or remote-control applications.
Key Features
- Model: WH28-T Back B100K
- Configuration: 5-Pin pulley potentiometer
- Resistance Taper: B100K (linear taper)
- Drive Type: Belt pulley rotary mechanism
- Material: Plastic + Metal construction
- Color: Black
- Dimensions: Approximately 2.7 × 1.5 cm
- Package Contents: 1 × Potentiometer
- Condition: Brand new
- Made in Mainland China
What Is a Pulley Potentiometer?
A pulley potentiometer uses a belt-and-wheel mechanism to remotely rotate the resistive element. This is ideal for applications where the control knob must be positioned away from the circuit board — common in audio panels, industrial controls, and custom electronic enclosures. The B100K value (100kΩ linear) is widely used for volume, tone, and signal-level adjustments.
Ideal For
- DIY electronics and hobby circuit builds
- Audio equipment repair and modification
- Custom control panels and enclosures
- Electronic prototyping and breadboard testing
- Replacement part for existing belt-drive potentiometer assemblies
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Please allow a 2–3% dimensional variance due to manual measurement. Actual product color may vary slightly from images due to screen calibration differences.
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Frequently Asked Questions
Q: What does B100K mean on this potentiometer?
A: "B100K" indicates a linear taper (B) with a total resistance of 100 kilohms (100K). Linear taper potentiometers provide an even, proportional change in resistance as you rotate them, making them ideal for general-purpose electronics, volume controls, and signal-level adjustments.
Q: What is a pulley potentiometer used for?
A: A pulley potentiometer uses a belt-and-wheel drive system to allow the control shaft to be located at a distance from the actual resistive element. This makes it perfect for custom panel builds, audio equipment, and any enclosure where direct shaft access is not practical.
Q: How many pins does this potentiometer have, and how is it wired?
A: This potentiometer has 5 pins. Typical wiring uses the outer pins for the full resistance path and the wiper pin(s) for the variable output. Please refer to your specific circuit schematic or datasheet for the exact pin assignment matching your application.
Q: Is this potentiometer compatible with standard DIY electronics kits?
A: Yes. The WH28-T B100K 5-pin pulley potentiometer is a standard component that is widely compatible with DIY electronics kits, breadboards, and PCB assemblies that call for a 100kΩ linear potentiometer with a belt-drive pulley mechanism.