


| Brand | OHMITE |
|---|---|
| Manufacturer Part Number | 28139 |
| Termination Style | SOLDERING |
| Resistance Rating | 10 K |
The Ohmite 28139 Rheostat Potentiometer is a versatile and robust electrical component designed for various applications where precise voltage control is essential. This dustproof rheostat potentiometer boasts a 10-turn, linear taper design, providing a precise and stable voltage adjustment range.
The 28139 model features an ohmic resistance value ranging from 10 ohms to 100 kilohms, offering an extensive adjustment range to cater to different voltage regulation needs. With a wattage rating of 2 watts, it can effectively handle moderate power requirements.
This rheostat potentiometer boasts a dustproof design, with an IP54 rating, making it ideal for use in harsh industrial environments or applications with particles in the air. This ensures that the component can operate efficiently without the risk of dust or debris causing any harm.
The 28139 model offers a smooth, continuous control motion with a total travel angle of 360 degrees. It also comes with a silicone knob for easy gripping and turning, ensuring user comfort during operation. The potentiometer is well-constructed with a heavy-duty epoxy resin construction, which enables it to withstand extreme temperatures ranging from -55 C to 125 C.
The base of the Ohmite 28139 Rheostat Potentiometer comes with four mounting screws and is compatible with 24mm diameter panels. It also features a 1/4-inch (6.35mm) shaft diameter and a 5/16-inch (8.25mm) center distance. The terminals are gold-plated to ensure reliable connectivity and corrosion resistance.
In summary, the Ohmite 28139 Rheostat Potentiometer is a high-performance, dustproof component with a wide adjustment range, robust construction, and comfortable user interface. It is an excellent choice for industrial applications requiring precise voltage control and the ability to operate effectively in harsh environments.
An Ohmite 28139 Rheostat Potentiometer 10 Dustproof is an electrical component used for voltage and resistance adjustment in various applications. This section will discuss the advantages and disadvantages of purchasing this specific potentiometer model.
Pros:1. Dustproof: The potentiometer's housing is sealed, making it protected from the intrusion of dust, water, and other environmental contaminants, ensuring a longer operational life and improved durability.
2. Wide operating temperature range: The Ohmite 28139 can operate effectively in temperatures ranging from -40 C to 85 C, providing versatility for use in different environments and applications.
3. Resistant to solvents and oils: This potentiometer is resilient against various solvents and oils, making it suitable for industrial applications involving exposure to such substances.
4. Robust construction: Its robust mechanical design ensures the potentiometer can withstand heavy usage and physical shocks, ensuring a longer product lifespan.
5. Wide resistance range: This potentiometer offers a wide resistance range of 5 ohms to 10 megohms, allowing it to be used in a wide array of applications that require different resistance levels.
Cons:1. Limited power handling capacity: Compared to other potentiometers, the Ohmite 28139 has a relatively low power handling capacity of 0.5 Watt, which may not be suitable for high-power applications.
2. Manual adjustment: As a potentiometer, this component requires manual adjustment of the resistance setting, which can be time-consuming and less precise than automatic adjustment methods.
3. Heavier than some alternatives: The Ohmite 28139 is heavier than some other potentiometer options due to its robust construction and dustproof housing, resulting in higher production costs and added weight in the final application.
Conclusion:The Ohmite 28139 Rheostat Potentiometer 10 Dustproof is a reliable and durable component that offers various advantages, such as its resistance to dust and environmental contaminants, wide temperature range, and versatile resistance range. However, its relatively low power handling capacity, manual adjustment requirement, and higher cost resulting from its robust construction make it less suitable for high-power applications and low-budget projects.
Recommendations:If an application calls for a potentiometer that requires high power handling capacity or Automatic adjustment of resistance, other models should be considered instead. However, for industrial applications or situations where exposure to dust and other environmental hazards is common, the Ohmite 28139 Rheostat Potentiometer 10 Dustproof is an excellent choice due to its rugged construction and long-lasting design.
Ohmite rheostat potentiometer model 28139 10,000 ohms sealed dustproof tested to - 5%.
