A basic LED driver circuit cannot be dimmed from a triac-based dimmer without some additional components being added to enable stable dimmer operation and then to adjust the output current based on ...

For example recently we taught students in Birmingham, UK how to create a basic LED circuit, then code that circuit to turn on using the Pi-Top - using that knowledge students were then able to ...

Presuming a particular basic LED circuit does require a resistor, though, it will be necessary to subtract the forward voltage drop of the LED from the source voltage, and to apply Ohm's law.

This custom circuit board picks up some of the pieces from a wall wart to drive a high-power LED. The basic concept is to keep the high-voltage components and swap out the low voltage ones for ...