Multiple control circuit for relay - has outer control point connected to relay through protective device switch and diodes

摘要

An outer control point regulates the action of a relay through a protective locking elements, a switch and at least one high current and high voltage diode. The relay lies in the output circuit of a controllable electronic switch, whose control electrode is controlled by low power signals from the output of a control element through a diode and a series resistor. The control element input is connected to the outer control point and to a central control point.