Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1982-08-06
1986-03-04
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307280, 307445, 307265, H03K 3284, H03K 333
Patent
active
045742049
ABSTRACT:
This invention relates to a circuit for holding a pulse at an up level during a time interval .tau. after the input signal has been removed, and to the use of the circuit to realize a monostable multivibrator. The holding circuit features a bipolar transistor that is driven into saturation by the application of an input signal in the form of a clock pulse. The hold circuit also features a control network including a diode and a drain resistor. Upon removal of the input signal the charge stored in the base of the saturated transistor is caused by the diode to flow in a controlled manner to the drain resistor so that the transistor is cut off after a time interval .tau. closely approximating the storage time t.sub.s. Thus, the holding circuit provides a pulse of width T+.tau.. A monostable multivibrator is obtained by connecting the holding circuit to one of the two inputs of a conventional NOR circuit. The other NOR circuit input receives the input clock pulse. Because of the absence of capacitors these circuits can readily be fabricated as a monolithic integrated form.
REFERENCES:
patent: 3312839 (1967-04-01), Briley
patent: 3341712 (1967-09-01), Lefferts
patent: 3394268 (1968-07-01), Murphy
patent: 3578988 (1971-05-01), Slowikowski
patent: 3585512 (1971-06-01), Gassman
patent: 3641369 (1972-02-01), Wallingford
patent: 3867648 (1975-02-01), Christenson
R. E. Hayes, "Step-recovery Action in Transistors", Electronic Letters, vol. 3, No. 4, p. 151 Apr. 1967.
P. Blomeyer, "Kleines LSL-Ptaktikum", Technische Rundschau, vol. 68, No. 15 Dec. 1976.
Brown Edward W.
Callahan Timothy P.
International Business Machines - Corporation
Jordan John A.
Lashmit Douglas A.
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