Device for driving final control element, e.g. for electromagnetic relay, has controller with arrangement for modulating voltage driving final control element to reduce control rate

摘要

The device has a voltage supply (12) and a controller (14) connected to the voltage supply and the final control element (20). The controller has an arrangement for modulating the voltage driving the final control element to reduce the control rate. The controller has a control circuit (16) and a voltage regulating circuit (18) that interact to supply the final control element with the minimum switch-on voltage.