Pulse and Digital Circuits

14.1 INTRODUCTION

A transformer is a device that transfers electrical energy from one winding to the other through inductive coupling. A changing current in the primary winding creates a changing magnetic field. This changing magnetic field induces a changing voltage in the secondary winding by mutual induction. Transformers work on Faraday’s law of induction which says that the induced electromotive force or EMF in any closed circuit is equal to the time rate of change of the magnetic flux through the circuit. A pulse transformer is one which is optimized for transmitting rectangular electrical pulses, that is, pulses with negligible rise and fall times and a relatively constant amplitude. To minimize distortion of the pulse shape, a pulse transformer ...