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Browse Prior Art Database

Inhibit Circuit

IP.com Disclosure Number: IPCOM000098944D
Original Publication Date: 1964-Sep-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Sprott, CN: AUTHOR

Abstract

The circuit interrupts a sequence of input pulses one pulse after an inhibit switch is actuated. When inhibit switch 10 is closed and input pulses are not applied to input terminal 11, relay 12 is energized through the closed contacts of switch 10 from source E at supply terminal 14. Relay contacts 12A are closed. Relay 13 is also energized from source E and its contacts 13A are closed.

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Inhibit Circuit

The circuit interrupts a sequence of input pulses one pulse after an inhibit switch is actuated. When inhibit switch 10 is closed and input pulses are not applied to input terminal 11, relay 12 is energized through the closed contacts of switch 10 from source E at supply terminal 14. Relay contacts 12A are closed. Relay 13 is also energized from source E and its contacts 13A are closed.

Application of an input pulse of voltage E at terminal 11 causes a similar pulse to appear at output terminal 15 Relay 12 drops out since voltage E appears at terminal 11 and the supply terminal 14, but relay 13 is maintained energized through the inhibit switch 10. Relay 12 is again energized through inhibit switch 10 as soon as the pulse disappears.

When switch 10 is opened, the next pulse at terminal 11 causes a corresponding pulse at terminal 15. Relay 12 again drops out as explained and contacts 12A are opened. Relay 13 is maintained in its energized state and its contacts 13A are closed as long as the input pulse is present via a circuit comprising terminal 11 and diode 16. At the end of the input pulse, relay 13 drops out and contacts 13A open to isolate terminal 15 from input terminal 11. No further pulses appear at the output terminal 15 until switch 10 is again closed.

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