The final stage of the design. Complete simulated circuit in LTSpice / Multisim for DC Motor Drive of 50 V, 10 A. Comments, evaluation of the circuit, and proposed improvements for future work.
Why is isolation necessary in electronic circuits? How can we implement optical isolation? Gate Drive circuits for controlling switches of H Bridge are discussed and simulated circuit is given.
First the need of dead-band / dead-time is discussed thoroughly and hazards of short-circuiting in H-Bridge are seen. Finally a circuit to implement and generate dead-band / dead-time is given.
Introduction to H Bridge and its working. PWM wave basic concepts and how PWM can be used to operate H Bridges. Ideal simulation of H Bridge in LTSpice (or Multisim) and conclusion to simulation.
Electronic circuit design / simulation in LTSpice / Multisim. The circuit handles 10 A current and 50 V source to drive a motor at desired speed. Microcontroller and optical encoder carry out control.