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Electronic Transformers: Inductance Testing, Dielectric Strength, and Temperature Rise under Load

Electronic Transformers: Inductance Testing, Dielectric Strength, and Temperature Rise under Load

A transformer that meets its rated specifications at room temperature with no load is not the same t...

Capacitors & Resistors: Tolerance Screening and Voltage Withstand Testing

Capacitors & Resistors: Tolerance Screening and Voltage Withstand Testing

A capacitor or resistor that measures within spec at room temperature on the factory floor is not th...

E-Readers: E-Ink Display Ghosting Artifact Benchmarking and Page-Turn Latency Standards

E-Readers: E-Ink Display Ghosting Artifact Benchmarking and Page-Turn Latency Standards

You've sourced a batch of e-readers from a Chinese factory. The supplier's samples looked clean. But...

Drones QC: Flight Stability, Hovering Precision, and Video Transmission Range Tests

Drones QC: Flight Stability, Hovering Precision, and Video Transmission Range Tests

You order 500 consumer drones from a Chinese factory. The spec sheet looks solid — 30-minute flight ...

Projector Inspection: How to Verify ANSI Lumens Calibration and Optical Focus Sharpness Before Shipment

Projector Inspection: How to Verify ANSI Lumens Calibration and Optical Focus Sharpness Before Shipment

Inflated brightness claims are one of the most persistent quality problems in the consumer projector...

Smartwatch & Fitness Tracker QC: How to Validate Sensor Accuracy and IPX Waterproofing Before Shipment

Smartwatch & Fitness Tracker QC: How to Validate Sensor Accuracy and IPX Waterproofing Before Shipment

A fitness tracker that over-counts steps, or a "waterproof" smartwatch that fails after the first sw...