Circuit for generating pulses with duration proportional to quot

Details Circuit for generating pulses with duration proportional to quot Circuit for generating pulses with duration proportional to quot

1975-06-25

1977-08-02

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307265, 328161, H03K 504, H03K 310, G06G 716

Patent

active

040398684

ABSTRACT:
First and second transistors are connected in a monostable multivibrator configuration. A capacitor is coupled between the collector of the first transistor and the base of the second transistor. A first control voltage is applied to the collector of the first transistor to charge the capacitor when the second transistor is conductive. A constant current source is provided to charge the capacitor at a constant rate determined by a second control voltage. The stored energy is discharged through the first transistor when energized in a successive cycle. The capacitor is recharged by the constant current source through the first transistor to linearly raise the potential at the base of second transistor. The transistors are triggered by the distributer of an engine so that a control pulse is generated for each revolution of the engine's output shaft. The width of the output pulse from the collector of second transistor is proportional to the first input voltage and inversely proportional to the second input voltage. When the pulse generators are cascaded in a suitable manner, the width of the output pulse is proportional to the product of the two input voltages.

REFERENCES:
patent: 3346746 (1967-10-01), Gordon
patent: 3453453 (1969-07-01), Hughes
patent: 3569743 (1971-03-01), Baessler
patent: 3651345 (1972-03-01), Lundgreen
patent: 3705991 (1972-12-01), Hobo
patent: 3801834 (1974-04-01), Lai
patent: 3829716 (1974-08-01), Goyer

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