RELAY DEVICE Russian patent published in 1994 - IPC

FIELD: automatics. SUBSTANCE: device has actuating apparatus, thyristor switch, generator built around unijunction transistor, comparator and measuring circuit with positrons. To increase number of controlled parameters and reliability of operation use is made of star-connected resistors, optocoupler, three diodes, voltage stabilizing diode and capacitor. Device features simple design, non-contact circuit, high response and accuracy of operation. It has no transformers and coils of relays. EFFECT: enhanced reliability of operation. 1 dwg