The transistor computer uses over 2000 individual transistors to implement everything comprising the 11 ... this basically is the largest Arduino shield. That already puts a record. Report comment.

The Arduino is no exception to this trend, either, ... Big transistors use a lot of power to do work, if you copied the atmega architecture to lets say, a 7nm process, ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

You also need to select the transistor by the type of fan that you use. In my case I used the well-known BD139 transistor and a 9V battery to provide power to the fan and transistor. The LM35 ...