I was planning to use a 600 ohm resistor connected to the led in a parralel circuit with the switch and the rest of the components.
Thank you!Sorry for the stupid question, but what is the difference between a switching regulator and a voltage regulator?
There is no waste.
QuoteThere is no waste.So 100% efficient are they?
The way it works.A voltage regulator burns off excess power as heat.A switching regulator puts energy into a coil and extracts it with the voltage you want. The only loss is due to absorption in the coil's core.
Much simpler, IMO, would be to have the LED blink to indicate the presence of power. A short blink every second would be sufficient to let you know it is plugged in, but with a short duty cycle, save that power.