Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-08-07
1990-10-23
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307265, 328 58, 328207, H03K 3284, H03K 3017, H03K 508, H03K 301
Patent
active
049654659
ABSTRACT:
A monostable multivibrator comprising an input terminal receiving a trigger signal, a time constant circuit having at least a capacitor, a first pulse generator connected to the input terminal for generating a first pulse in synchronism with a leading edge of the trigger pulse, a first set-reset flipflop having a reset input connected to the first pulse generator and a Q output connected through a discharge circuit to one end of the capacitor, a first Schmitt circuit having an input connected to the one end of the capacitor and an output connected to a set input of the first flipflop, the first Schmitt circuit having a first threshold corresponding to a potential slightly higher than a potential of a logical low level so that the Schmitt circuit can detect a substantial discharge of the capacitor, a second Schmitt circuit having an input connected to the one end of the capacitor and having a second threshold corresponding to a potential slightly lower than a potential of a logical high level so that the Schmitt circuit can detect a substantial charge of the capacitor, a second pulse generator having an input connected to an output of the second Schmitt circuit for generating a second pulse in synchronism with a leading edge of the output of the second Schmitt, a second set-reset flipflop having a reset input connected to receive the second pulse from the second pulse generator and a Q output connected to an output terminal, and a logic gate having a first input connected to the output of the first pulse generator, a second input connected to the Q output of the second flipflop and an output connected to a set input of the second flipflop.
REFERENCES:
patent: 4245167 (1981-01-01), Stein
patent: 4260912 (1981-04-01), Bjorke
patent: 4425514 (1984-01-01), Orr et al.
Miller Stanley D.
NEC Corporation
Phan Trong
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