If one of your designs requires an microcontroller (MCU) to detect on/off signals from high-voltage devices, you might first think about an optical coupler or optical isolator with its LED connected ...

The importance of signal isolation in high-voltage design The difference between optocouplers and opto-emulators Details on TI’s silicon dioxide (SiO 2) isolation technology Isolation is invaluable in ...

When it came time to test the lab prototype described in part 1, I realized that I had no signal generator with enough output voltage swing of any waveform to exercise the circuit. I have generators ...