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Circuit Biasing Techniques

IP.com Disclosure Number: IPCOM000093807D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Atkins, JB: AUTHOR

Abstract

Circuit characteristics are taken into account when biasing transistor circuits in order to minimize power dissipation and total circuit resistance. Thus, the number of such circuits that can be fabricated on a given size monolithic chip is increased.

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Circuit Biasing Techniques

Circuit characteristics are taken into account when biasing transistor circuits in order to minimize power dissipation and total circuit resistance. Thus, the number of such circuits that can be fabricated on a given size monolithic chip is increased.

Circuit 1 performs a true And function that operates off a 3.5 volt source. In adapting this circuit for operation off a 12 volt source a decrease in power dissipation and total circuit resistance can be realized by using circuit 2. Such use is in lieu of merely increasing the resistance values of resistors R1, R2 and R3 in circuit 1.

Circuit 2 has the advantage of the fact that points A and B are logically out-of- phase with point C. This is achieved by using a common resistor R6 to connect all the points A B and C to the 12 volt source instead of having separate connections to the 12 volt source. Furthermore advantage is taken of the in- phase relationship of points A and B by using a common resistor R5 to connect them to point D instead of increasing their resistance and connecting them separately to point D.

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