Power supply for operating electrical load, has inverter whose inputs are connected with outputs of direct current (DC) chopper which generate pulse-width modulated direct voltage and/or DC

摘要

The power supply has inverter (3) with inputs (3-1,3-2) for direct voltage or direct current (DC), and outputs (3-5,3-6) for alternating voltage or alternating current (AC). The primary-side and secondary-side terminals of transformer are connected to outputs and inputs of inverter and rectifier (5), respectively. The inputs of inverter are connected with outputs (2-6,2-7) of DC chopper (2) which generate pulse-width modulated direct voltage and/or DC. The amplitude-modulated alternating voltage with constant duty cycle is generated at outputs of inverter.