A coder for pulse code modulation using circulated pulses

This thesis is concerned with the construction of a pulse code modulation coders the purpose of which is to code the information contained in a signal having no frequency components greater than 4 kc into a series of binary pulses. The major objective was the construction of a transistorized coder using the circulated pulse principle which involved only simple circuits and readily available components. The construction and operation of this system are described in full. The results of tests made on the circuit using d-c input signals are also given.Applied Science, Faculty ofElectrical and Computer Engineering, Department ofGraduat