ACTUATING MEMBER CONTROL DEVICE Russian patent published in 1998 - IPC

FIELD: automatic control systems. SUBSTANCE: device has indicating member, transistor, and switching unit. Load connecting electrodes of switching unit are connected to indicating member. Commutated voltage supply electrodes are connected to buses of power supply source (one electrode is connected directly and the second electrode is connected through diode connected in forward direction). Base-to-emitter junction of transistor is connected in parallel to diode via current regulator using the field-effect transistor. Transistor collector is connected to indicating member. Use of nonlinear volt-ampere characteristic of diode and voltage regulator based on field-effect transistor provides for conversion of voltage taken off diode in case of both safe check current flow (of less than 30 mA) and standard indicating member control current flow (2-5 A). This voltage is converted to control current of transistor switching on the indicator. EFFECT: more effective control. 1 wdge