PULSE-WIDTH TRANSMITTER FOR OPTIC-FIBER COMMUNICATION LINES

A pulse-width transmitter is described that is built into a dynamic in tegrator circuit to transmit a signal with an accuracy of +/- 0.5% at a sampling period of 1 musec. The circuit has a low power consumption (+/- 2.5 V, 30 mA), and the conversion accuracy can be reduced to +/- 0.025% if the period is increased to 20 musec. The signal settles to /- 0.5% in less than 3 musec at a pulse period of 1 musec, and for a p eriod of 20 musec it settles to within +/- 0.025% in less than 100 mus ec.