AVR-Chat

On Wed, Sep 17, 2008 at 8:50 PM, Enki <enkitec@gmail.com> wrote:
>        I have used this design:
>
>        Ultra Simple 5V Switchmode Regulator
>        http://sound.westhost.com/appnotes/an006.htm
>
>        A nice cheap switching regulator.
>
>        There is an even better version here:
>
>        Simple Switching Regulator
>        http://www.techlib.com/electronics/regulators.html

I will not recommend this kind of circuitrs unless for cost
reasons. They tend to be quite noisy.

I did use similar circuits for very wide input AC/DC sensors
since there are no PWM ICs which works from 12-240V DC and
20-240V AC.

Xiaofan