Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-08-16
1992-06-23
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072966, 307493, H03K 301, G06G 712
Patent
active
051245868
ABSTRACT:
A circuit for presenting a multiplied impedance at in input node includes a resistor having a value desired to be multiplied at the input node connected at one end to a reference potential. A first transistor has a current path in series between the input node and the other end of the resistor. A voltage divider is connected at one end to the reference potential, and a second transistor has a current path in series between a voltage source and the other end of the voltage divider, so that the second transistor and the voltage divider form an emitter follower circuit, to provide feedback to said first transistor circuit. A current control element of the first transistor is connected to receive the divided voltage from the voltage divider, and a current control element of the second transistor being connected to the input node. The transistors can be either bipolar, enhancement FET or MOS enhancement FET type devices.
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Bachand Richard A.
Cunningham Terry D.
Jorgenson Lisa K.
Miller Stanley D.
Robinson Richard K.
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