FREQUENCY CONVERTER Russian patent published in 1997 - IPC

FIELD: electrical engineering. SUBSTANCE: frequency converter has resonant inverter and control device with driving oscillator which output is connected to counter and demultiplexer inputs. Inverter input is connected to alternative current power net and it input gates are thyristor made unit. Control device has input voltage electrical polarity pick-up and voltage instantaneous absolute value pick-up which inputs are connected to inverter input. Control device has too D-trigger and two exclusive OR units, trigger information input is connected to driving oscillator output and trigger output is connected to resolution inputs of counter and demultiplexer. First inputs of logic units exclusive OR are connected to voltage electrical polarity pick-up output and second one are connected to counter output. Logic units exclusive OR outputs are connected to addressing inputs of demultiplexer. EFFECT: frequency converter can be useful for electrical technology device constructing. 4 dwg