Voltage Regulator Question?
Looking a bit into voltage regulators. When I'm looking at the wiring diagrams on the datasheets, most of them indicate that it requires a 30V+ish input voltage to work. I was hoping to get a small adjustable voltage regulator to run off the 12v range. I really don't need anything over 12volts anyway. Can I get this to work or do I have to find a power supply capable of providing 30V+ for the voltage regulator?
I was looking at models such as the lm117 if it helps.
Also, If I do need 30v+, where can you suggest I get that kind of power supply? I usually use 12v wall adapters.