A COMPARISON OF 3 SIMPLE METHODS FOR SPEED CONTROL OF A DC MOTOR BY PWM. PART B. BASED ON 555 TIMER 

This is the second video in a series of four where I test and compare 3 simple methods (techniques) for speed control of a DC motor by PWM. The three methods are a) based on a 555 TIMER IC, b) based on 741 OP-Amps, and c) Based on the Arduino Uno. The first video (Part A) gives a general description of the three methods. The second video (Parte B, this one) discusses in detail the 555 based circuit. The third video (Part C) discusses in detail the 741 based circuit. Lastly, the fourth video (Part D) discusses the Arduino based circuit. A part of a comparative (comparation) evaluation test and tutorial for motion control.