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Magnetic-coupled multivibrator developments

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1 Author(s)
Geyger, W. A. ; U. S. Naval Ordnance Laboratory, Silver Spring, Md.

In static d-c to a-c converters employing a saturating transformer with rectangular hysteresis-loop core material in conjunction with two switching transistors (magnetic-coupled multivibrators), the oscillation frequency is linearly proportional to the d-c supply voltage. This fact is significant with regard to telemetering-transducer applications. However, the relation between d-c input voltage and frequency of the square-wave output voltage is quite unfavorable in those cases; e.g., design of test circuits for magnetic amplifiers, where it is necessary to vary the oscillation frequency of the magnetic-coupled multivibrator independently, without changing magnitude of the supply voltage.

Published in:

Electrical Engineering  (Volume:79 ,  Issue: 8 )