Hartley oscillator

Details Hartley oscillator Hartley oscillator

1976-03-02

1977-03-15

Kominski, John

Oscillators

Solid state active element oscillator

Transistors

331171, 331186, H03B 512

Patent

active

040127010

ABSTRACT:
A Hartley oscillator includes a basic Hartley oscillation circuit having a semiconductor active element, a tank circuit coupled to the active element and having a grounded end, a coupling capacitor connected between the other end of the tank circuit and a control electrode of the active element. A constant direct current source for supplying a constant direct current to an electric current supply terminal of the active element is further provided. A feedback circuit is coupled to the active element and the output of the constant direct current source and adapted to cause a variation of a direct current potential on the current supply terminal of the active element to be fed back to the control electrode of the active element, and a capacitor having a grounded end and the other end connected to the output of the constant current source is further provided in the Hartley oscillator.

REFERENCES:
patent: 3319179 (1967-05-01), Hepner
patent: 3396345 (1968-08-01), Hoeppel
patent: 3732503 (1973-05-01), Rapp
Wireless World, Apr. 1968 "Wide-Range General Purpose Signal Generator" pp. 61-66, Nelson-Jones.

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