High-Efficiency Converter Producing Constant-Voltage Output with Constant-Current Input

This paper describes a new constant-current input DC to DC converter, which supplies DC output voltage needed in the load, and puts back unnecessary power to the power source. In this converter, the output side consists of a constant-voltage circuit in which the impedances are variable in parallel, but its variable impedance section is provided in the alternating voltage section located between the inverter on the input side and the rectifier on the output side so that, theoretically, the serial control type constant-voltage feeder circuit without loss can be obtained by serially feeding back the controlled surplus power to the constant-current feeder circuit.