<P> The first multivibrator circuit , the classic astable multivibrator oscillator ( also called a plate - coupled multivibrator ) was first described by Henri Abraham and Eugene Bloch in Publication 27 of the French Ministère de la Guerre , and in Annales de Physique 12 , 252 ( 1919 ) . Since it produced a square wave , in contrast to the sine wave generated by most other oscillator circuits of the time , its output contained many harmonics above the fundamental frequency , which could be used for calibrating high frequency radio circuits . For this reason Abraham and Bloch called it a multivibrateur . It is a predecessor of the Eccles - Jordan trigger which was derived from the circuit a year later . </P>
<P> The first multivibrator circuit , the classic astable multivibrator oscillator ( also called a plate - coupled multivibrator ) was first described by Henri Abraham and Eugene Bloch in Publication 27 of the French Ministère de la Guerre , and in Annales de Physique 12 , 252 ( 1919 ) . Since it produced a square wave , in contrast to the sine wave generated by most other oscillator circuits of the time , its output contained many harmonics above the fundamental frequency , which could be used for calibrating high frequency radio circuits . For this reason Abraham and Bloch called it a multivibrateur . It is a predecessor of the Eccles - Jordan trigger which was derived from the circuit a year later . </P>
what is the other name of astable multivibrator
what is the other name of astable multivibrator
plate - coupled multivibrator
plate - coupled multivibrator