- on Power Supplies
- Published in issue 7/2007 on page 0
Switch-Mode 555 Supply
This switch-mode power supply is built around a 555 timer IC. It provides a maximum output voltage of 40 V with a 12-V input voltage. The voltage can easily be set using a Zener diode, and it must be higher than the input voltage (the minimum output voltage is always 12 V).