100 Ohm Preset Variable Resistor (Trimmer Potentiometer)

The 100 Ohm preset variable resistor, commonly known as a trimmer potentiometer, is an adjustable resistor that allows fine-tuning of electrical resistance in circuits. With its low resistance value, this component is ideal for applications that require precise current control or signal adjustment in low-resistance circuits. Its compact design and adjustability make it a versatile choice for circuit calibration and tuning.

Key Features

• Resistance Range: Adjustable up to 100 Ohms
• Power Rating: Typically rated at 1/4 Watt
• Compact Design: Small footprint, ideal for PCB mounting and space-restricted applications
• High Precision: Provides accurate control of resistance for fine-tuning circuit behavior
• Adjustment Mechanism: Easily adjusted using a small screwdriver or trim tool

Applications

• Current Limiting: Ideal for adjusting and limiting current flow in circuits where precise current control is necessary.
• LED Brightness Control: Used in circuits to adjust the brightness of LEDs by controlling the current passing through them.
• Signal Tuning: Can be used in signal-processing circuits to finely adjust the strength or clarity of electrical signals.
• Low-Resistance Circuits: Suitable for use in circuits where lower resistance adjustments are critical for performance, such as in RF circuits or sensor interfaces.
• Amplifier Circuits: Allows for fine-tuning of gain in low-power amplifier circuits, helping achieve desired output without distortion.

Advantages

• Low-Resistance Precision: Provides accurate low-resistance adjustments, essential for circuits where small changes in resistance make a big difference.
• Durable Construction: Designed for long-term use with stable performance and minimal drift in resistance values.
• Compact and Space-Saving: Its small form factor makes it easy to fit into tight spaces on PCBs, ideal for modern electronic devices with limited real estate.
• Cost-Effective Solution: Offers a budget-friendly option for engineers needing adjustable resistance without compromising on accuracy.
• Easy Adjustment: The resistance can be quickly and easily adjusted, enabling real-time tuning during circuit testing and development.

Common Uses

• LED Circuits: The 100 Ohm preset resistor is often used in LED circuits to control brightness levels and ensure efficient current regulation.
• Battery-Operated Devices: Helps to adjust power usage in battery-operated devices, extending battery life while maintaining optimal performance.
• Microcontroller Projects: Employed in microcontroller-based projects for fine-tuning sensor outputs, improving data accuracy in automation and robotics.
• Calibration Circuits: Ensures precise calibration of sensor circuits, where even slight changes in resistance can impact the overall performance of the system.
• Communications Systems: Used to tweak signal clarity and strength in communication devices, ensuring that data transmission remains clear and consistent.

Conclusion

The 100 Ohm preset variable resistor is a key component for applications that require low-resistance adjustments and fine-tuning. Its precision, durability, and compact size make it an essential part of circuit design, especially in current-limiting, LED brightness control, and signal tuning applications. Whether you’re working on small-scale electronics projects or more complex systems, this trimmer potentiometer offers the versatility and performance you need for accurate circuit adjustments.

1M Ohm Preset Variable Resistor (Pack of 5)