Equipment for pulse width modulation at very high frequencies, comprises pair of transistors with conduction controlled by input signal and linked by capacitor with potential adjusting circuits

摘要

The conduction of two paralleled transistors (T1,T2) is controlled by an input signal (Vin) which consists of positive pulses with constant pulse width. A capacitor (C) which links the transistor circuits changes polarity at each ascending and descending input front and the point of changeover is detected by a comparator (CMP) to produce positive pulses whose width may be varied by changing the size but not the width of the input signal Independent claims are made for (1) an emitter of luminous signals; and (2) a telecommunication system which uses luminous signals