Systematic Generation of Monostable and Counting Bistable Circuits

In this paper systematic procedures are developed for generating monostable circuits and bistable circuits with the counting property from a given dc bistable configuration. Essential to the synthesis is the controlled-resistance model, which represents those characteristics of three-terminal active devices necessary for the stable-state realization of switching circuits. In addition, the synthesis methods make use of a new, simplified form of the total dc characteristics of a complete bistable configuration viewed at any node pair. Criteria are developed for systematically determining all possible locations for the necessary energy storage elements of monostable and counting bistable circuits. Basic means of triggering these circuits are discussed. The procedures developed lead to existing and new circuits employing conventional (bipolar) and field-effect transistors. Some of these circuits are well suited to integrated realization. Experimental verification of the synthesis procedures is presented.