Inverter converter circuit for maintaining oscillations througho

Details Inverter converter circuit for maintaining oscillations througho Inverter converter circuit for maintaining oscillations througho

1976-11-22

1977-09-27

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

363 25, 363 56, 331 62, H02M 328, H03K 316

Patent

active

040514455

ABSTRACT:
A magnetically coupled two transistor multivibrator for use with power supplies. In addition to the usual collector driven output transformer, an auxiliary transformer having its secondary winding in series with the transistor base drive circuits is employed. The auxiliary transformer has primary windings powered by emitter current. Provision is also made for feedback from the main output transformer so that the secondary base drive windings can be powered from either emitter or collector currents. Electronic means are employed to isolate the output transformer from the base drive transformer upon the occurrence of a short circuit in the load, thus permitting the emitter windings to take over the function of supplying feedback and maintaining oscillations.

REFERENCES:
patent: 3004226 (1961-10-01), Jensen
patent: 3323075 (1967-05-01), Lingle

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