Most TV remotes use 940-950nm LEDs. The TV-B-Gone uses a combination of short ranged, wide output and long ranged, narrow output LEDs, to have a combination of easy mark hitting and longer range. Say ...
I need to connect 5V laser module looks like this one. I connected it like an LED and it works. But i am afraid of doing something wrong. I came across things like "laser diode drivers" such as ...
I have a circuit fed by a 5V source which receives audio signals, amplifies them, and modulates an LED so the intensity of the LED changes with the voltage. Ok so far so good. But what I want to do ...
I'm trying to design a circuit that will let me drive an LED or Diode laser with a RF signal up to ~20 MHz or so. Since the optical device will need to be biased with a DC current, a bias -t is a ...