Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-12-03
1981-08-11
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307261, 307490, 328181, 307503, H03K 408
Patent
active
042836379
ABSTRACT:
A control circuit is adapted to control the movement of a pintle relative to the die head of extrusion apparatus. A command signal is supplied to a signal generator, which produces a first output signal in the form of a series of continuous voltage triangles, and a second output signal in the form of unit pulses. An impedance matrix contains a plurality of potentiometers which may be remotely connected to a summing amplifier. The potentiometers are arranged in a numerical order. Odd-numbered potentiometers are supplied with the triangular output signal from the signal generator. Even-numbered potentiometers are supplied with the signal generator triangular output signal, but which has been phase-shifted by half the width of one triangle. The pulse output from the signal generator is supplied to a decoder, which successively connects pairs of numerically-adjacent potentiometers with the summing amplifier during overlapping time intervals. During the cycle of operation, only a pair of numerically-adjacent potentiometers will be connected to the summing amplifier at any point in time. The output of the summing amplifier is a control signal, which may be used to control the movement of a pintle relative to a die head.
REFERENCES:
patent: 3633643 (1972-01-01), Anthony
patent: 3649845 (1972-03-01), Foch
patent: 3781693 (1973-12-01), Ford
patent: 4030039 (1977-06-01), Fahlgren
Handte Herbert
Kollmar Friedrich
Davis B. P.
Miller, Jr. Stanley D.
Moog GmbH
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