A Zener diode is the simplest known type of voltage limiter (Figure 1) As soon as the voltage exceeds the rated voltage of the Zener diode, a current can flow through the diode to limit the voltage.

Although 5V-powered logic isstill common in many applications,most FPGAs support interfacelevels of 3.3V and lower. When youconnect an FPGA to higher voltagelevels, the FPGA’s application ...

[Afroman] is back again with another great tutorial video on the basics of electronics. This time it’s zener diodes. Page three or four of every ‘beginners guide to electronics’ covers a diode as, “a ...