WISAMIC Capacitor ESR Tester 100kHz Precision Meter

Description

Product Overview

The WISAMIC WS1290190002 ESR meter is a dedicated capacitor internal‑resistance tester designed for accuracy and convenience. Housed in a 6.61 × 3.7 × 1.93 inch ABS case weighing just 8.78 oz, the device converts a square‑wave input to a clean 100 kHz sine wave, removing unwanted high‑frequency components that could skew results. Its dual terminals and included SMD alligator clips allow rapid connection to both through‑hole and surface‑mount capacitors, while the printed meter display offers instant readouts of ESR values. First available on June 3 2024, this model ranks #16 in Capacitance Meters on Amazon, reflecting strong user confidence.

Usage

Designed for electronics hobbyists, repair technicians, and R&D engineers, the ESR meter excels in diagnosing capacitor health in power supplies, audio amplifiers, and LED drivers. Its low‑voltage DC test (<15 mV) ensures safe measurement without stressing the component, making it suitable for live‑circuit checks and bench‑top analysis. Whether you are troubleshooting a failing motherboard, validating a prototype board, or performing routine maintenance in an industrial setting, the meter’s quick‑clip design speeds up workflow and reduces handling errors.

Why Choose Us

WISAMIC combines rigorous engineering with user‑focused design. The meter’s 100 kHz sine‑wave generation minimizes measurement distortion, delivering more reliable ESR values than generic square‑wave testers. Built‑in protection limits test voltage to protect sensitive components, and the robust ABS enclosure resists drops and lab wear. Backed by a reputable manufacturer and positive customer reviews (average 3.9/5 from 41 reviewers), the device offers confidence‑grade performance at an affordable price point.

Key Features

• 100 kHz pure sine‑wave excitation for accurate ESR measurement
• Low test voltage (<15 mV) safe for delicate capacitors
• Dual terminals with SMD alligator clips for versatile connections
• Compact, lightweight ABS housing for portable use
• Clear digital display with quick readout of resistance values

FAQ

Can this meter measure capacitance values?

No. The device is specifically engineered to measure the internal series resistance of capacitors, not their capacitance.

What types of capacitors can I test?

The meter works with both through‑hole and surface‑mount capacitors, thanks to the included alligator clips and standard test leads.

Is the 100 kHz sine wave safe for all components?

Yes. The meter limits the applied voltage to less than 15 mV DC, ensuring that even sensitive semiconductor devices are not damaged during testing.

How do I interpret the ESR reading?

A low ESR indicates a healthy capacitor, while a high value suggests degradation or failure. Compare readings against typical ESR ranges for the capacitor type and rating.

Does the device require calibration?

The meter is factory‑calibrated and maintains accuracy over its service life; periodic verification is recommended for critical applications.