Comparison of HASL, ENIG and OSP PCB surface finishes: flatness, oxidation protection, use with BGA and fine pitch, cold joints versus poor wetting, and impact on product cost.
How NIBP works: cuff inflation, deflation valve, pressure sensor, oscillometric pulses and the processing used to obtain SYS, DIA, MAP and pulse rate.
Technical article on electric vehicle charger architecture: ISO 15118 and OCPP communication, DC fast charger power electronics, electrical safety, EMC and certification.
Micro-energy harvesting and management systems use light, vibration and temperature differences to extend the battery life of sensors and IoT devices.
Online inductance calculator for eight air-core coil configurations, with formulas and dimensions in centimeters.
Good practices for designing and testing antennas in compact devices, including placement, ground plane, matching, VSWR and validation.
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