Oscillator circuit arrangements including nullator-norator pairs

Details Oscillator circuit arrangements including nullator-norator pairs Oscillator circuit arrangements including nullator-norator pairs

1976-06-09

1978-05-23

Grimm, Siegfried H.

Oscillators

Negative resistance or negative transconductance oscillator

331108D, 331140, 331167, 333 80R, H03B 526

Patent

active

040913414

ABSTRACT:
The invention relates to electrical oscillators arranged to oscillate so as to produce a substantially sinusoidal output signal. The said oscillator includes a general impedance transvertor circuit arrangement having two differential amplifiers connected only to a plurality of resistive and capacitive impedance elements and arranged to simulate a tuned circuit with sufficient feedback to maintain oscillation within the tuned circuit. The transvertor circuit is an active device in the form of an impedance invertor circuit or a convertor circuit.

REFERENCES:
patent: 3539943 (1970-11-01), Sheahan
patent: 3562678 (1971-02-01), Antoniou
patent: 3573647 (1971-04-01), Antoniou
Davies, "The Significance of Nullators, Norators and Nullors in Active-Network Theory," The Radio and Electronic Engineer, Nov. 1967, pp. 259-267.
Riordan, "Simulated Inductors Using Differential Amplifiers," Electronics Letters, Feb. 1967, vol. 3, No. 2, pp. 50-51.

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