On Wed, Apr 28, 2004 at 03:08:39PM +0300, Omer YALHI wrote:
> Current needed is less than 1A.  Let's say that I want to go as high as 12V.
> This is what I can do, I can simply connect a 7805 or similar regulator and
> drop the voltage to 5 and then to 3 (with another regulator).  I will need
> both the 3V and 5V in the circuit.  The important thing for me is that, I
> would like this circuit to work whether a 3V, 5V or 12V power supply is
> connected.
>
> I can even give up the 12V if there is way to make the circuit work with
> either 3V or 5V power connection.

Let's back it up, as your requirements are all over the place.

What circuit do you have? How is it to be powered? What choices do you have
in terms of powering it?

As the designer, I think you may be making a mistake allowing so many different
voltages to power the circuit. Spend a minute explaining why someone should
be able to plug in 3 different voltage power supplies into this circuit.

Often added complexity leads to failure.

Hope to hear back soon.

BAJ

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