2.3 Power Supply

In our project, 5 Volts was required for all the integrated circuits, 12 Volts was required For the D.C motors and 8Volts for stepper.

 We use 5 Volts Regulator (LM 7805) to feed the integrated circuits, and 8 Volts regulator (LM7808) for the stepper motor.

2.3.1  LM78XX Regulator

The most common way of generating afixed voltage is to use the 78xx voltage regulator which has atypical tolerance of 5%.

Figure 2.12 LM78XX circuit diagram