Saturday, June 6, 2015

Circuit Schematic DC Motor Controller Using NE555 IC

Eltronicschool. - There are many application when we want to use NE555 IC for electronic project. One application of NE555 IC is used to control DC motor. In this time we will show you one of the circuit schematic of DC Motor Controller using NE555 IC like in figure 1 below.

Circuit Schematic

Figure 1. Circuit Schematic DC Motor Controller Using NE555 IC  (Source: Circuitstoday)

Component Parts
  1. NE555 IC
  2. DC Motor
  3. DPDT relay
  4. Capacitors (See in figure 1 above)
  5. Resistors (See in figure 1 above)
  6. Diodes D1 and D2 IN4001
  7. Diode D3 IN4007
  8. Transistor Q1 BD139

Description

Circuit schematic like in figure 1 above is Circuit Schematic DC Motor Controller Using LM555 IC. NE555 IC in this circuit will produce PWM that wired as an astable multivibrator whose duty cycle can be adjusted by varying the POT R1. The PWM signal will drive the motor that the PWM come from pin 3 NE555 that coupled with transistor Q1 BD139. Higher the duty cycle the average voltage across motor will be high which results in higher motor speed and vice versa. Change of DC motor direction is attained using the DPDT switch S1 which on application just toggles the polarity applied to the motor.



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