voltage regulation


I need to run a mini display that requires about 3.2 V. I have regulated 5V
running on another board. Is there any problem with just using 3 diodes to
drop the voltage to close to the disply's requirements?
Any comments would be welcome.
Robert
Reply to
robert
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"robert"
** Nope.
But drop a nice electro ( 6 volt, 220uF) across that reduced rail.
........ Phil
Reply to
Phil Allison
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?
Reply to
dmm
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 shite 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!)
Reply to
Greg the Grog
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
Reply to
robert
"Greg the Grog"
** Bullshit it is.
Snip rest of your irrelevant & mindless shite.
......... Phil
Reply to
Phil Allison
Is it actually (or critically) 3.2V, or is 3.3V acceptable? 3.3V is a standard and regulator chips are readily available.
Ken
Reply to
Ken Taylor
the voltage is not critical. Anywhere between 3 and 3.6 is fine.
robert.
Reply to
robert
Then use a 3.3V regulator for the display and run the rest of the circuitry from the 5V or as required.
Ken
Reply to
Ken Taylor

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