217962 ⎘
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output; Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
Double-power-supply switching control system for a welding machine and method
#2Rectifier arbitration in wireless charging systems
#3Insulation detecting circuit, power converting device and insulation impedance value detecting method
#4Electrical transformer