Switch=off circuitry for bus system or data transmission line - has control operating circuit breaker at transmitting or receiving end upon voltage drop

摘要

A circuit breaker (TS1-TSn) is inserted in the line (DL1-DLn). A control switch (SS) has its output (SA) connected to the drive input (TSE1-TSEn) of the circuit breaker. Its input (SE) is switched by a drive voltage (U1) which supplies a device (G1) ' connected to a line (TS1). The control input (SSE) of the switch (SS) is operated by a second drive voltage (U2) which supplies a second device (G2). The control switch (SS) opens the circuit breaker on loss of power supply to disconnect the devices (G1-G2). USE/ADVANTAGE - Can be used with bus system or simple transmission lines. Prevents false data being received due to unlimited voltage conditions.