What Makes Suntan TSR-Series Wirewound Resistors Stand Out?

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Learn the difference between trimming potentiometers and wirewound resistors — and why the Suntan TSR-Series (TSR-11~TSR-16) is built for both precision and power in industrial automation and load testing.

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Suntan TSR-Series — combining trimming precision with wirewound power for real-world control and testing.

Quick Primer: Trimming Potentiometer vs. Wirewound Resistor

• What is a trimming potentiometer? A small, adjustable resistor used to fine-tune voltage or current. TSR-11~TSR-13 fit calibration and control panels.
• What is a wirewound resistor? A power-capable resistor made from wound metal wire, preferred for heat handling and stability. TSR-14~TSR-16 target load banks, braking, and test fixtures.
• Wirewound vs. metal film? Wirewound handles higher wattage and thermal stress; metal film suits low-noise precision at lower power.

How to Choose — A Simple 4-Step Workflow

1. Define function: Adjustment needed? → TSR-11~13. Power dissipation/load? → TSR-14~16.
2. Estimate power: Use P = I²R or P = V²/R to size wirewound models for load testing.
3. Check environment: Consider ambient temperature, cooling, mounting (aluminum housed / heat-sink ready).
4. Derate conservatively: Choose a rating comfortably above your calculated power for reliability margin.

Worked Example: Sizing a Load Resistor

Suppose you need a 20 Ω load at 30 V for a bench test. Power is P = V²/R = 900/20 = 45 W. For continuous testing, select a wirewound model with headroom beyond 45 W and provide adequate heat sinking. Within the TSR family, refer to the wirewound range (TSR-14~TSR-16) and choose per the datasheet’s thermal guidance.

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Myths vs. Facts (Wirewound Resistors & Trimming Potentiometers)

Query / Keyword

Myth

Fact & Action

wirewound resistor noise

Always noisy

For power/load, prioritize thermal stability & wattage. Noise is acceptable vs film types’ limits.

trimming potentiometer calibration

Any pot is fine

Panel repeatability depends on shaft 6.35 mm, mounting, tolerance; use TSR-11~13.

power resistor heat dissipation

Wattage alone solves heat

Heatsink, airflow, and derating are essential; size with P=I²R/P=V²/R → TSR-14~16.

Watch: From Precision Control to Power Load

Video: TSR-Series applications — trimming potentiometers for precision control and wirewound power resistors for load testing.

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FAQ — What People Search For

Q1. What is a trimming potentiometer?
It’s a variable resistor for fine adjustment; TSR-11~13 are compact, panel-friendly options.

Q2. How to use a potentiometer?
Route the wiper (middle pin) to the signal you want to adjust; rotate to change resistance/voltage.

Q3. Wirewound resistor vs metal film — which to pick?
Pick wirewound for load/power and thermal robustness; metal film for low-noise precision at lower power.

Q4. Which resistor is best for load testing?
TSR-14~16 wirewound resistors are built for high power and heat dissipation; follow datasheet guidance.

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