Errors in 100V power supply, dangerous to health (your own and the equipment)
This video discusses a comprehensive and safe option for switching the power supply of audio and other components, devices and instruments with a mains voltage of 100 / 110 / 120 Volts. This “recipe” is perfect for solving the problem of power supply for both a rack of vintage Hi-Fi components produced for the Japanese market, and an entire collection/rack of boomboxes with the same power supply. Any other applications/use scenarios are possible for any equipment with a given supply voltage.