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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
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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:
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✅ In-Circuit Testing – Applies less than 15mV DC to allow safe capacitor testing directly on TV, LCD, and audio boards.
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✅ High Precision & Resolution – Offers a 4-digit display with resolution down to 0.001Ω, ideal for detailed diagnostics.
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✅ Dual Power Options – Operates via 2x AA batteries or 5V USB power (batteries not included).
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✅ ESR Reference Table – Built-in printed ESR table for quick condition checks and repair efficiency.
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✅ Manual Reset Function – Includes a clear button to eliminate test lead interference for more accurate readings.
Specifications:
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Model: MESR-100
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Accuracy: Up to 1%
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Test Frequency: 100kHz true sine wave
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Measuring Voltage: <40mV RMS
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Clamping Voltage: 0.15V
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Measurement Range: >1μF recommended
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Display: 4-digit (up to 0.001Ω resolution)
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Power Supply: 2× AA batteries or 5V USB (batteries not included)
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Battery Life: >80 hours
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Dimensions: 14.4 × 8.1 × 3.1 cm (5.7 × 3.2 × 1.2 in)
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Weight: 219g (7.7 oz)
Package Includes:
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1 × MESR-100 ESR Meter
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2 × Test Clips
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1 × User Manual
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