Pulse generator for producing fixed width pulses

Details Pulse generator for producing fixed width pulses Pulse generator for producing fixed width pulses

1978-12-08

1981-01-13

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307273, 307293, 307354, H03K 3017, H03K 3284, H03K 5153

Patent

active

042451671

ABSTRACT:
One shot and doubling one shot circuits are disclosed which produce fixed width output pulses in response to alternating input signals being applied thereto. Integrated injection logic (I.sup.2 L) and linear integrated circuit techniques are combined in the fabrication of the two circuits. Both the one shot and doubling one shot circuit comprises a switching transistor which is rendered conductive and nonconductive to produce the output pulse at its collector electrode. In response to the positive going transition of the input signal triggering signals are generated to render the switching transistor conductive. Conjointly, a capacitor is caused to charge toward a fixed potential until the magnitude of the voltage thereacross reaches a predetermined value which trips an output of a comparator circuit. The tripping of the comparator causes the switching transistor to be rendered nonconductive until the next positive going transition of the input signal. Modification of the one shot circuit to produce triggering signals on both the negative and going transitions of the input signals provides the doubling one shot function wherein fixed width output pulses are produced at the collector electrode of the switching transistor at each transition of the input signal.

REFERENCES:
patent: 2949547 (1960-08-01), Zimmerman
patent: 3048708 (1962-08-01), Raver
patent: 3202834 (1965-08-01), Pingry et al.
patent: 3480801 (1969-11-01), Smith
patent: 3543054 (1970-11-01), Schrader
patent: 3820029 (1974-06-01), McKinley
patent: 3883756 (1975-05-01), Dragon

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