Microprocessor-controlled current transformer-based power supply
R. G. Khuzyashev, Igor L. Kuzmin · Russian Electrical Engineering · 2009
The basic relations under charging and discharging of a capacitor that accumulates energy from a current transformer are analyzed. The capacitor and the current transformer, together with a step-up switching regulator, constitute the power supply of an autonomous sensor installed on a high-voltage transmission line wire. The processes of charging and discharging the capacitor are controlled by the microcontroller of the sensor.