Design of 400HZ mid-frequency static switch power employing PWM

The power adopts the unique control method of one pair of rings of instantaneous value and SPWM special-purpose chip high precision to control the accusing of type device IGBT completely, the quality of wave form is good, it is online and adjustable to output the voltage, the operation trouble is very clear, benefit inspection and exclusion of the trouble. Can meet the needs of various load.