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Polyphase multivibrators

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1 Author(s)
Harada, K. ; Kyushu University, Fukuoka, Japan

A new type of polyphase multivibrator is introduced in which saturable cores are the timing elements and transistors the switching elements. The basic units are like the multivibrators invented by Royer and others, but, in the new polyphase circuit, several single-phase multivibrators with a common dc source are constrained by a loop connection of windings on the cores in such a way that polyphase output voltages are obtained. Detailed analysis of a typical 3-phase circuit leads to conclusions regarding the frequency of oscillation and the output voltage waveforms which conform to experimental observations. Novel arrangements are presented by means of which 2-phase voltages can be obtained from a 3-phase multivibrator.

Published in:

Magnetics, IEEE Transactions on  (Volume:3 ,  Issue: 2 )