Capacitive Dropper
Basic RC Buck
Basic RC Buck
C1 / R1 / BD1 / DZ1
| Part | Description |
|---|---|
| C1 | Buck step down capacitor |
| R1 | discharge resistor |
| BD1 | bridge diode (4pcs of 1N4007) |
| DZ1 | Zener diode (24V, 12V, 5V, etc) |
Documents
Reference
Maybe it was a simple capacitive dropper power supply (use a capacitor and resistor to go down to about 10-30v then use a linear regulator? )
- See this appnote : http://ww1.microchip.com/downloads/en/appnotes/00954A.pdf
- Use guide File:Capacitive dropper.pdf