voltage regulation

"robert"

But drop a nice electro ( 6 volt, 220uF) across that reduced rail.

........ Phil

How much current does the mini display require? Can the 5V supply on the other board maintain the regulation on its own board, as well as supplying the display board?

That's a big call big Phil. I prefer the other response better, at least he is asking for a bit more information. Like WTF is a 'Mini Display'? Are we talking just powering it or is it in need of some data and s**te too? Maybe it's hanging of a data bus..... 3 diodes per bit +/- some chip select? Thats a lot of diodes, do you really think it's a good idea? Maybe there is a better way.... (that doesn't use valves or 555s)

;-)

(flame on!)

The "mini display" is the screen from a mobile phone (10mA). The 3.2V will also power a picaxe microprosessor (prob. 100mA?? i'm guessing) so be be generous no more than 200 mA for the lot.

Robert

"Greg the Grog"

Snip rest of your irrelevant & mindless s**te.

......... Phil

Is it actually (or critically) 3.2V, or is 3.3V acceptable? 3.3V is a standard and regulator chips are readily available.

Ken

the voltage is not critical. Anywhere between 3 and 3.6 is fine.

robert.

Then use a 3.3V regulator for the display and run the rest of the circuitry from the 5V or as required.

Ken