Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1983-11-08
1986-02-04
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307494, 330257, 330288, H03L 500, H03K 522
Patent
active
045688400
ABSTRACT:
A variable resistance circuit comprises first and second transistor pairs, first and second load circuits connected to respective collector sides of the first and second transistor pairs, and first and second constant current sources connected to respective common connected emitters of the first and second transistor pairs. Each of the load circuits supplies collectors of each transistor pair with currents having same current values with each other. Each of the constant current sources supplies the common connected emitters of each transistor pairs with a constant current. Respective base and collector of one transistors of the first and second transistor pairs are connected to each other and connected to first and second terminals, respectively. Bases of the other transistors of the first and second transistor pairs are connected to the second and first terminals, respectively. There is obtained resistance characteristics between the first and second terminals, and a resistance value between the first and second terminals is varied in accordance with constant current values of the first and second constant current sources.
REFERENCES:
patent: 3739195 (1973-06-01), Fidi et al.
patent: 3891937 (1975-06-01), Bockelmann et al.
patent: 4039981 (1977-08-01), Ohashi et al.
patent: 4066914 (1978-01-01), Gundry
patent: 4152667 (1979-05-01), Visser
patent: 4242650 (1980-12-01), Cordell
patent: 4288707 (1981-09-01), Katakura
patent: 4513242 (1985-04-01), Yokogawa
patent: 4513252 (1985-04-01), Sano
Callahan Timothy P.
Miller Stanley D.
Nippon Gakki Seizo Kabushiki Kaisha
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