“How can we amplify the current from one transistor using another?”
Transistors are very useful for amplifying current. However, sometimes the current gain from a single module is not enough. So how can we use our engineering mindset to solve this problem? Well, what if we were to simply hook two transistors up to each other? This way, we current amplification will be squared. This setup is known as a Darlington Pair and is used in the control of motor relays.