Browse Prior Art Database

Pulse Driver

IP.com Disclosure Number: IPCOM000097193D
Original Publication Date: 1962-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Myers, AS: AUTHOR

Abstract

The pulse driver circuit is employed in addressing a memory array which utilizes either cores or tunnel diodes as the storage elements. The circuit comprises current mode switching section 1. Transistor 10 conducts and transistor 11 is non-conducting in the absence of an input signal at terminal 14. When the input signal is supplied to 10, it is rendered non-conducting and 11 conducts.

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Pulse Driver

The pulse driver circuit is employed in addressing a memory array which utilizes either cores or tunnel diodes as the storage elements. The circuit comprises current mode switching section 1. Transistor 10 conducts and transistor 11 is non-conducting in the absence of an input signal at terminal 14. When the input signal is supplied to 10, it is rendered non-conducting and 11 conducts.

With a third transistor 19, transistor 11 forms a latch 2. This operates in non- saturating manner when 11 is conducting. Driver circuit 4 is responsive to the output of latch 2 at the emitter of transistor 19 to supply a memory cell selection pulse to the memory array. A timing control circuit 3 includes the tunnel diodes 32 and 33 and a delay line having inductances 29 and 30 and capacitor 31. Circuit 3 controls the timing of the selection pulses by resetting latch 2 to restore section 1 to its normal condition.

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