Period-to-voltage converting device

Details Period-to-voltage converting device Period-to-voltage converting device

1978-02-01

1980-04-08

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328151, 307246, 307261, H03K 500

Patent

active

041975081

ABSTRACT:
A period-to-voltage converting device for producing an output voltage corresponding to the varying period of an input signal. The input signal is applied to a frequency divider and a simple logic circuit to control the charging and discharging of first and second capacitors. A charging circuit responsive to a first timing pulse having a width equal to half a period of an input signal charges the first capacitor to a predetermined voltage. A discharging circuit responsive to a second timing pulse having a width equal to the period of the input signal discharges the first capacitor at a constant rate. Another charging circuit responsive to a third timing pulse having a width equal to half a period of the input signal charges the second capacitor to the same voltage across the first capacitor, this voltage being the output voltage proportional to the period of the input signal.

REFERENCES:
patent: 3535658 (1970-10-01), Webb
patent: 3723771 (1973-03-01), McLean
patent: 3852619 (1974-12-01), Carbrey
patent: 3968447 (1976-07-01), Baylac et al.

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