Pulse generator producing short duration high current pulses for

Details Pulse generator producing short duration high current pulses for Pulse generator producing short duration high current pulses for

1978-12-29

1981-03-24

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331112, 315DIG7, H03K 330

Patent

active

042583381

ABSTRACT:
The present invention deals with a pulse generator for generating short duration, high current pulses at a repetition rate which is substantially independent of variations in source potential, load or ambient temperature. The pulse generator employs a single transistor, relaxation oscillator configuration, in which the base electrode potential is maintained proportional to source potential and the emitter electrode potential is coupled in an RC network in which rate of change of voltage on the capacitor is proportional to the source potential. Regenerative feedback required for production of short duration, high current pulses is provided by a current transformer having a few primary and a few secondary turns wound on a magnetic core for close coupling. The output pulses, which are derived by a second current transformer, are suitable for turning on a switching transistor in a high frequency static inverter. The two current transformers may be wound through separate apertures, neutral to the main inverter flux, in a larger composite inverter core. The invention leads to an efficient, compact and low cost static inverter.

REFERENCES:
patent: 2826692 (1958-03-01), Sihvonen
patent: 3056930 (1962-10-01), Berg
patent: 3187271 (1965-06-01), DeVries
patent: 3296486 (1967-01-01), Nienhuis

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