Hi,
I need a transformer-less power supply circuit to power my PIC microcontroller. I came across the following circuit from here
(URL and schematic deleted by moderator)
It converts 120V AC to 5V DC (or that's what I understand). I can make out that zener is used as regulator but still cannot get a clear picture
Can some one please explain how this circuit works and how I can modify it to convert 220V AC to 5V DC. Also how to calculate the current it can source?
I need a transformer-less power supply circuit to power my PIC microcontroller. I came across the following circuit from here
(URL and schematic deleted by moderator)
It converts 120V AC to 5V DC (or that's what I understand). I can make out that zener is used as regulator but still cannot get a clear picture
Can some one please explain how this circuit works and how I can modify it to convert 220V AC to 5V DC. Also how to calculate the current it can source?
Last edited by a moderator:
