2 x LM317K Adjustable Voltage Regulator 1.2 to 37V

In a previous video I talked about fixed voltage regulators that take an unregulated voltage on the input and supply a tightly regulated voltage on the output. For example the popular 7805 is used to create a constant five volt supply. In this video I'm going to show you how to use the LM317 adjustable voltage regulator to create any regulated voltage voltage you want all the way up to thirty seven volts. You can use it as a power supply for a lot of projects such as a fan speed controller. You can get an LM317 from anywhere that sells electronics. Sometimes they are called LM317T or LM317AT. Once you've got it put a heatsink on it so it does not melt your breadboard. The next thing to do is put a couple of capacitors on the input and output pins. Put a 0.1 microfarad ceramic capacitor on the input and a one microfarad electrolytic capacitor on the output. Remember to use capacitors rat