Voltage half-wave throwing circuit device synchronized with supplied voltage

Abstract

Abstract 1. Circuit arrangement for the supply-voltage-synchronised switching of each second voltage half-wave of an alternating voltage with a controllable semi-conductor switching element (1) which is connected in series with the load (6) of the alternating voltage source (R, S), and with a control circuit which contains a pulse-shaping stage (13) and a respective potential-isolating stage (7, 4) on the input and output sides, and whose input is connected to the alternating voltage source and whose output is connected to a control input of the semi-conductor switching element, characterised in that the semi-conductor switching element (1) is a semi-conductor relay which contains at least one controllable semi-conductor component (2) and a first opto-electronic coupling element (4) as an output-side potential-isolating stage of the control circuit, and which can be controlled in a range of voltages which are small in relation to the peak value of the voltage, and which range extends from the zero passage (14) of the voltage (R, S), in that the input-side potential-isolating stage of the control circuit is a second opto-electronic coupling element (7), and in that each second half-wave of a phase-shifted alternating voltage derived from the alternating voltage source is applied at the input of the control circuit.

Inventors

• 👤 Shiyumitsuto Herumuuto

Bibliographic Details