Power supply for max 100mW from powerline (none isolated)

Hello All,

I need to power a smal circuit (about 3 Volts, 30mA).
This circuit need to be powered from the powerline (220VAC).
The circuit need not to be isolated from the powerline.

I searched the internet for a simple solution for this, but could not
find it.
I hope there are special chips that do just this.

Does anybody has an idea?

Any help is welcome.

Thanks and greetings,

Cor Jansen.

On Thu, 07 Jul 2005 13:58:53 +0200, Cor Jansen <cor@dapdesignxdotxcom>
wrote:

>Hello All,
>
>I need to power a smal circuit (about 3 Volts, 30mA).
>This circuit need to be powered from the powerline (220VAC).
>The circuit need not to be isolated from the powerline.
>
>I searched the internet for a simple solution for this, but could not
>find it.
>I hope there are special chips that do just this.
>
>Does anybody has an idea?
>
>Any help is welcome.
>
>Thanks and greetings,
>
>Cor Jansen.

3vDC?
The simplest solution is a diode and capacitor in series with the line
in and another capacitor across the load. You can use a zener to limit
the voltage across the load.
I have used this for SSRs