AN ELECTRICAL RELAY DRIVE ARRANGEMENT FOR ENERGISING AND DE- ENERGISING THE ELECTRICAL COIL OF AN ELECTRO-MECHANICAL RELAY

摘要

An electrical relay driver arrangement for energising and de-energising an electrical coil of an electro-mechanical relay including a power supply controller adapted to provide outputtable voltage at definable intervals approaching or about zero crossing to charge a capacitor arrangement to a selectable voltage in communication with a resistor to provide an available current. A micro-controller adapted to provide a boost current such that when the electrical coil of the electro-mechanical relay is to be energised, the electrical coil initially receives the boost current at and for a time interval set by the micro-controller and thereafter from the available current provided through a transistor receiving a control signal from the power supply controller.