Day 6

Today we learned about transistors and Darlington.
A transistor is basically a current amplifier that increase the current.
For example, the christmas tree light requires more current and the arduino board can provide, so we use a transistor to increase the current and light it up.

Using two transistor to amplify the current twice is called Darlington, which can also be achieved by using a TIP 120 transistor. An important thing to notice is that the order of base, collector, and emitter is different on a TIP 120 transistor.