Undervoltage protection device for a control and monitoring appliance

摘要

An undervoltage protection device for a control and monitoring appliance which contains a component through which an electrical current I flows continuously until a confirmation signal appears. A controllable switch (5), whose control input is driven by a controller (4), is connected electrically in series with the component (1). The controller (4) is supplied with AC voltage and contains, inter alia, a diode, at least one zener diode and/or a pulse diode. <IMAGE>