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MESR-100 ESR Meter – Digital Capacitor Tester with 100kHz Sine Wave, 4-Digit High-Resolution Display, In-Circuit Testing

MESR-100 ESR Meter – Digital Capacitor Tester with 100kHz Sine Wave, 4-Digit High-Resolution Display, In-Circuit Testing

Regular price $139.18
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Accurate ESR Measurement for Capacitor Testing
The MESR-100 ESR Meter is a specialized tool for identifying faulty or degraded capacitors with up to 1% accuracy. Using a true 100kHz sine wave test signal, it minimizes capacitive impedance (1/2πfC) to accurately measure the true series resistance (ESR) of capacitors—even in-circuit.

Key Features:

  • In-Circuit Testing – Applies less than 15mV DC to allow safe capacitor testing directly on TV, LCD, and audio boards.

  • High Precision & Resolution – Offers a 4-digit display with resolution down to 0.001Ω, ideal for detailed diagnostics.

  • Dual Power Options – Operates via 2x AA batteries or 5V USB power (batteries not included).

  • ESR Reference Table – Built-in printed ESR table for quick condition checks and repair efficiency.

  • Manual Reset Function – Includes a clear button to eliminate test lead interference for more accurate readings.

Specifications:

  • Model: MESR-100

  • Accuracy: Up to 1%

  • Test Frequency: 100kHz true sine wave

  • Measuring Voltage: <40mV RMS

  • Clamping Voltage: 0.15V

  • Measurement Range: >1μF recommended

  • Display: 4-digit (up to 0.001Ω resolution)

  • Power Supply: 2× AA batteries or 5V USB (batteries not included)

  • Battery Life: >80 hours

  • Dimensions: 14.4 × 8.1 × 3.1 cm (5.7 × 3.2 × 1.2 in)

  • Weight: 219g (7.7 oz)

Package Includes:

  • 1 × MESR-100 ESR Meter

  • 2 × Test Clips

  • 1 × User Manual

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