Resonance state defining and regulating circuit for bridge inverter, has AND blocks for feeding output signals to amplifier inputs, such that frequency control block uses frequency information for controlling frequency generated by inverter

摘要

The circuit has a bridge circuit with a power transistor (11), whose source terminal (1) is earthed, and delay blocks (3) connected parallel to a NOR block (2), where the blocks (2, 3) are formed as control detectors. The detectors determine frequency dissonance by a voltage of the transistor, where the dissonance is converted into frequency information that is fed to two AND blocks (4). The AND blocks feed output signals to two inputs of a differential amplifier (6), such that a frequency control block (7) uses the information for controlling the frequency generated by a bridge inverter. An independent claim is also included for a method for defining and regulating a resonance state of a bridge inverter.