Method and apparatus for producing ramp signals with rounded inf

Details Method and apparatus for producing ramp signals with rounded inf Method and apparatus for producing ramp signals with rounded inf

Filed on

1975-09-19

Date issued

1977-04-05

Examiner

Miller, Jr., Stanley D.

Patent Class

Electrical transmission or interconnection systems

SubClass

Nonlinear reactor systems

SubSubClass

Parametrons

Other Related Categories

307229, 307261, 328127, 328142, H03K 508, G06G 718

Type

Patent

Status

active

Patent number

040164969

Description

ABSTRACT:
Ramp signals having rounded starts and finishes are provided through the method of producing an electrical voltage signal comprised of approximately circular portions and approximately straight line portions wherein the straight line portions are approximately tangential to the circular portions. In achieving the desired ramp signals, suitable circuitry is provided in which, in one embodiment, a high gain amplifier is selectively fed a step input voltage to initiate the ramp signal. The amplifier has a voltage limited output and is series connected to a first integrator. The first integrator has a voltage limited output and is series connected to a second integrator which produces the required ramp signal. The circuit also contains two feedback loops. The output from the first integrator is fed to the input of the high gain amplifier via an inverting amplifier. The output of the second integrator is fed to the high gain amplifier via a resistor. When the step input voltage is reduced to zero volts, the circuit produces a smoothed ramp signal in the reverse direction.

REFERENCES:
patent: 3312837 (1967-04-01), Flynn et al.
patent: 3350612 (1967-10-01), Hansen et al.
patent: 3405286 (1968-10-01), Mudie
patent: 3444394 (1969-05-01), Colvson
patent: 3526300 (1970-09-01), Ferrot
patent: 3552524 (1971-01-01), Benjamin et al.
patent: 3772533 (1973-11-01), Bruckner et al.
patent: 3777855 (1973-12-01), Boyldew et al.
patent: 3852674 (1974-12-01), Van Roessel
Hitachi Review, vol. 21, No. 6, June 1972, pp. 243-251.

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