Their benefits are such that it’s become surprisingly rare to see a traditional linear power supply with a mains-frequency transformer and rectifier circuit, so [ElectroBoy]’s dual voltage PSU ...

While power supplies with this design do have many advantages ... To bring the voltage to an acceptable level, a recognizable bridge rectifier is paired with a capacitor as well as a zener ...

The devices are optimized for use as clamp, snubber, and freewheeling diodes in various applications, including flyback auxiliary power supplies and high-frequency rectifiers for bootstrap driver ...