Signal connection system

Abstract

Abstract PURPOSE:To make it possible to prevent a logic circuit having received a noise from malfunctioning by disconnecting a driver circuit from a signal circuit during a period when a noise is generated possibly. CONSTITUTION:Once the power supply of logic unit 1' is put to work, power voltage VS to driver circuit 4 and relay 13 rises gradually from initial voltage V0 to reated voltage VCC. Then, relay 13 stays open at contact 15 at a working voltage and below and a developed voltage is never applied to signal line 3. With voltage VS above the working voltage next, contact 15 is made, but since the working voltage is between normal operatable voltage VT and voltage VS and a leaking voltage disappears, so that no current will flow through signal line 3. Therefore, the simple constitution disconnects a driver circuit from a signal circuit during a period when a noise is possibly generated, so that the logic circuit receiving a noise can be prevented from malfunctioning.

Inventors

• 👤 Akira Tamaki

Bibliographic Details