Wednesday, January 23, 2013

Driving Motors and Other Output Devices

Introduction to 'standard' interfacing circuits, small current loads, medium current loads (motors)

Microcontroler controlling signal lamp

Using same code as previous post, digitalWrite(6,HIGH) > delay > digitalWrite(6,LOW) in a loop




Darlington controlling signal lamp
Darlington uses a MPSA42 medium power transistor. It nees 20mA to turn on completely. We will use a small signal transistor to turn on the power transistor.




MPSA13 low power PNP 30V 1.2A



Controlling motor in toy using TIP120



Microcontroller controlling motor


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