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How to design low-cost, multiple output DC-DC converters
Power supply circuitry is always limited by cost, PCB area, height and by the desire to reduce complexity. The majority of systems today are mixed-signal and usually need several different supply voltages to operate.
Wireless Energy Transmission from Würth Elektronik
The principles of transmitting electrical power without a physical connection are not new. In the 1890s, Nikola Tesla was demonstrating inductor coils that would be familiar to electronic designers today.