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| Can I use the -12v to give the LCD -8v using a pot ? http://forum.lcdinfo.com/viewtopic.php?f=6&t=75 |
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| Author: | Elior [ Wed Dec 25, 2002 16:49 ] |
| Post subject: | Can I use the -12v to give the LCD -8v using a pot ? |
Can I use the -12v to give the LCD -8v using a pot ? All i need is pot ? which one ? Y r u guyz using all the other options to give the -8v if this is possible and most simple... ? |
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| Author: | Henri [ Wed Dec 25, 2002 19:23 ] |
| Post subject: | |
Yes you can use that. 10 Kohm potentiometer should work and no other parts are needed. Connect one end of the potentiometer to -12v and other end to GND. Middle pin will then be the variable output. I don't know for others but the reason I'm using inverter circuits is that I don't feel comfortable modifying the ATX power connector for this purpose. There's nothing wrong doing it that way but it's just not the way I do it. I also like the fact that I can power the display using just one +5v line. Also some of my displays have internal negative voltage converter and pot, some have negative voltage but need external pot and some don't have any negative voltage generator at all. |
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