High-frequency generator with harmonic-tuned resonant circuits

Oscillators – L-c type oscillators – Anode to grid coupled or connected resonant circuit

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331114, 331117R, 331181, 331117FE, H03B 510

Patent

active

056025157

ABSTRACT:
In order to improve the efficiency of a self-starting high-frequency generator, where for self-starting power is fed back from the anode circuit to the control grid of the grid-controlled electron tube used as amplifier element, the following measures are provided. An additional oscillating circuit (L.sub.A3, C.sub.A3) which is tuned to a multiple of the operating frequency (f.sub.1) is arranged in the anode circuit. An oscillating circuit (L.sub.G31, L.sub.G32, C.sub.G3) tuned to a multiple of the operating frequency (f.sub.1) is likewise arranged in the control-grid circuit. Components (L.sub.G31) belonging to the feedback circuit are at the same time components of the oscillating circuit arranged in the control-grid circuit.

REFERENCES:
patent: 1848126 (1932-03-01), Heising
patent: 2115858 (1938-05-01), Keall
patent: 2831116 (1958-04-01), Hahnel
Taschenbuch der Hochfrequenztechnik, Springer-Verlag, Berlin, DE, (1956) by H. Meinke et al.; pp. 955-957.
Taschenbuch der Hochfrequenztechnik, Springer-Verlag, Berlin, DE, (1992) by K. Lange et al.: Grundlagen, Komponenten, Systeme; pp. 76-77.
Elektronik, Jun. 1956, No. 5, pp. 136-138, K. Steimfi, Ulm, DE: Uber Rohrengeneratoren mit hochstem Wirkungsgrad.
IEEE Transactions on Broadcasting, vol. BC-31, No. 2, Jun. 1985, pp. 34-39, Z. Zivkovic: Third Harmonic Injection Increasing the Efficiency of High-Power HF Amplifiers.

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