Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1986-09-25
1987-07-14
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
377 60, 35821318, 35821326, 358167, 330278, 307304, H03G 332, H04N 977, H04N 314
Patent
active
046804897
ABSTRACT:
A controllable, piecewise linear gain circuit includes a first field effect transistor (FET), the drain of which is connected to a first source of bias voltage and the gate of which is connected to the input to the circuit. A first capacitor is connected between the gate of the FET and a common ground. The drain of a second FET is connected to the gate of the first FET, while the gate of the second FET is connected to a second source of bias voltage. A second capacitor is connected between the source of the second FET and the common ground. With this configuration, the output voltage of the circuit may be measured across an output resistance connected between the common ground and the source of the first FET, such that the second FET will turn on and connect the second capacitor to the output of the circuit when a predetermined amount of charge has accumulated on the first capacitor, thereby reducing the gain of the circuit. The circuit may be adapted to receive the output from a charge coupled device, the gate of the first FET being connected to the output of the charge coupled device to periodically receive packets of electrical charge which are transferred through the charge coupled device. The circuit may also be adapted to provide the input for a multiplexer, the input of the multiplexer being connected between the common ground and the gate of the first FET to control the output voltage of the circuit.
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Deinken John J.
Hamann H. Fredrick
Heyman John S.
Malin Craig O.
Rockwell International Corporation
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