Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1988-02-10
1989-08-15
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307265, 307518, 328111, 328 58, 328109, H03K 522, H03K 504
Patent
active
048577600
ABSTRACT:
A circuit for detecting positive and negative pulses of a predetermined maximum duration of an input signal includes a first monostable circuit for generating a first pulse having a duration equal to the predetermined maximum duration when a positive-going edge of a pulse occurs in the input signal. A second monostable circuit is provided for generating a second pulse also having a duration equal to the predetermined maximum duration when a negative-going edge of a pulse occurs in the input signal. An AND gate is coupled to the output of the first and second monostable circuits for generating a signal having a third pulse equal to the period of time both of the first and second pulses occur simultaneously. A flip-flop is coupled to the output of the AND gate for generating an output signal of a first logic state when the third pulse is generated. The flip-flop is also responsive to an external reset signal for setting the output signal at a second logic state when it is desired to detect further pulses in the input signal.
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D. S. Jain, "Detect Out-of-Bound Pulse Widths," EDN, Sep. 19, 1985, p. 242.
Anderson Edward B.
Mai Huy K.
Meza Peter J.
Miller Stanley D.
Tektronix Inc.
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