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Browse Prior Art Database

Switching Circuit

IP.com Disclosure Number: IPCOM000093811D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Wrona, S: AUTHOR

Abstract

The circuit receives a binary-valued signal at input terminal 2 and produces an inverted output at output terminal 4. Two transistors T1 and T7 are connected between terminal 4 and two potential points, ground and +V. Either of these transistors can be turned on to give terminal 4 the value of the potential point associated with the conducting transistor.

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Switching Circuit

The circuit receives a binary-valued signal at input terminal 2 and produces an inverted output at output terminal 4. Two transistors T1 and T7 are connected between terminal 4 and two potential points, ground and +V. Either of these transistors can be turned on to give terminal 4 the value of the potential point associated with the conducting transistor.

T1 is connected to turn on in response to the signal at terminal 2. Transistor T6 is connected to respond to the conduction state of T1 and to control T7 to have the opposite conduction state. The parallel combination of resistor 9 and capacitor 10 connect the base terminal of T6 to point +V. Capacitor 10 keeps the base of T6 at a substantially fixed value during changes in the input signal at terminal 2. The emitter of T6 is connected to the collector of T1. Thus T6 is turned on when T1 is on and is turned off when T1 is off.

The collector of T6 is connected to the base of T7. In response to voltage changes across resistor 8 in the collector circuit of T6 T7 turns on and off oppositely to T1.

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