Schematic diagrams, service manual for mobile phones
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ADCs for DSPs, part 2
Part 2 of this 5-part series explains how sigma-delta analog-digital converters work. It covers quantization, noise shaping, and calculating the effective number of bits (ENOB). Details... more...
Design Ideas protect against power supply faults
In test-and-measurement applications, you must provide overvoltage protection for the output terminals of amplifiers, power supplies, and similar components. "Circuits protect outputs against overvoltage" disconnects the amplifier-output no … Details... more...
WiMAX license bidding draws a crowd in Japan
NTT DoCoMo Inc, Softbank Corp, KDDI Corp. and the handy-hone company Wilcomm have all filed for licenses to supply high-speed WiMAX Internet access in Japan. Details... more...