Sensor device of the type having two terminals, including a power supply circuit with alternating current lifts up and control of a load by means of thyristors switching

摘要

P apparatus sensor has two terminals of the type fed with alternating current straightened e, e, v, v, d - d serving to control a charge ch branchee in series and comprising at least a thyristor th and a zener diode z, a sensor assembly - control circuit heading of the charge ch, a capacitor c serving as a source of supply of the load and the means for protection against overloads comprising a mos type transistor t mounted in series with the thyristor th, a transistor t mounted in parallel between the gate and source of the mos transistor t, a bridge of resistors r, r of polarization of the base of the delay t and a capacitor c / p