DC inverter with capacitor and voltage controller - has current transformer connected to diode and capacitor for output current evaluation

摘要

A voltage controller is operated by pulse width modulation and a current limiter is provided. A current transformer (W) has its primary winding (I) connected in series with the capacitor (K1) and a diode (D2) and with a capacitor (K2) is connected to the secondary winding (II) in parallel with a load resistor (B). It generates a DC voltage proportional to the output current (IA). The diode (D2) and transformer secondary winding (II) are so arranged that only capacitor (K1) discharge current is evaluated, with the diode (D2) and capacitor (K2) operating as a peak detector.