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Apple

Phone chargers produce EMI: We compared four

April 15, 2025 By Martin Rowe Leave a Comment

Four chargers USB

The switching power supplies that regulate output voltage produce radiated emissions. Our tests compare waveforms that give clues as to how the chargers operate.

Filed Under: EMI/EMC/RFI, FAQ, Featured, oscilloscope measurements, Power supplies Tagged With: Anker, Apple, JBL, UNI-Trend

The World’s First iOS-Enabled Wireless DMM

October 27, 2011 By Test and Measurement Editor Leave a Comment

Redfish Instruments releases the iDVM, which is the only DMM on the market that works on Apple’s iOS devices. The iOS device and App wirelessly acquires voltage, current, and resistance measurements from the device.

Filed Under: data acquisition, Meters & Testers Tagged With: Apple, data logger, handheld meters, multimeter

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