? about power

skullkeeper · 26th March 2009, 08:31 PM

hello all its been a wile but i need help figuring out power supply for my lcd.

ok could some tell me what volt, and ma/or amp power supply i need for this lcd.
the controler board says dcmp-80x version 1.2 if that helps

thanx

dave_gerecke · 26th March 2009, 08:53 PM

Hello Skullkeeper, the ebay listing has a link to the datasheet for this panel. If you scroll down to page 7, you will find the voltage and current ratings for the panel. According to the datasheet, you need a power supply rated for 5v with at least 1/4A of current capability. I would go with a supply that puts out at least 1 amp, that was you have a nice large buffer window and the power supply will run cooler and last longer. Looking a little further, it can also run off of a 3.3v power supply.

Peace,

Dave Gerecke

skullkeeper · 26th March 2009, 09:12 PM

cool thank you thats what i was thinking but im not to good at this kinda thing still learning. on my lcd controler it has a chip kinda like a prosesser chip but smaller and it has a sticker that says 12v 5v 3.3v so i guess any of the 3 would work but i think ill go with 5v 1amp.

thanx

brandon AKA Skullkeeper

dave_gerecke · 26th March 2009, 11:18 PM

Hello Brandon, Can you post a link to the datasheet of the LCD Controller, it might be good to have others take a look at it also. It's possible that the chip needs all three voltages, just one, or some other combination.

Peace,

Dave

skullkeeper · 26th March 2009, 11:40 PM

here is the data sheet mine is v1.2 this one says v1.1 not sure on differents.

LCD CONTROLER

dave_gerecke · 27th March 2009, 01:12 AM

Hello Brandon, From what I read on the docs for the LCD driver board, it appears that the board will output the necessary voltage to drive the LCD screeen, and setting the correct jumper position on J501 will set the output voltage to the one you want. To power the board it seems that it needs a 12v power supply, at least 2.5 amps total to handle the power needs of the board and the LCD monitor.
Hopefully someone else will give some input to confirm or refute my input.

Peace,

Dave

skullkeeper · 27th March 2009, 01:17 AM

yea i kinda saw that after i posted the pdf was just thinking would a standerd lcd power supply be ok 12v 4 amp

dave_gerecke · 27th March 2009, 01:27 AM

12v @ 4 amps should work fine. Having extra current available is a good thing. If the equipment doesn't need it, it won't use it, but a supply that is designed to be able to supply more current that it is being asked for will run cooler and be more reliable and long lasting. There are other factors that affect the life of a power supply (like anything else), but this will definitely help the supply last longer.

Peace,

Dave

26th March 2009, 08:31 PM	#1
skullkeeper diyAudio Member Join Date: Apr 2005 Location: tucson,AZ	? about power hello all its been a wile but i need help figuring out power supply for my lcd. ok could some tell me what volt, and ma/or amp power supply i need for this lcd. the controler board says dcmp-80x version 1.2 if that helps thanx

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
40A 250V Schottky Power Diodes- Has anyone use in Power Amp to replace Diode Bridge?	dtm1962	Solid State	10	15th September 2011 07:38 PM
LTspice tool for power amp power supply component evaluation	andy_c	Software Tools	2	23rd August 2009 05:10 PM
Power transformers versus amplifier output power..what is your option?	destroyer X	Solid State	38	9th May 2009 05:23 PM
Amplifier 3000 Wats Rms Power + Smps Higcht Power Bestiality	MARAVILLASAUDIO	Class D	1	5th November 2004 04:06 PM
power output calculations, rated power and required power output	metebalci	Tubes / Valves	7	22nd February 2004 05:49 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

26th March 2009, 08:53 PM	#2
dave_gerecke diyAudio Member Join Date: Dec 2007 Location: Vermont	Hello Skullkeeper, the ebay listing has a link to the datasheet for this panel. If you scroll down to page 7, you will find the voltage and current ratings for the panel. According to the datasheet, you need a power supply rated for 5v with at least 1/4A of current capability. I would go with a supply that puts out at least 1 amp, that was you have a nice large buffer window and the power supply will run cooler and last longer. Looking a little further, it can also run off of a 3.3v power supply. Peace, Dave Gerecke

26th March 2009, 09:12 PM	#3
skullkeeper diyAudio Member Join Date: Apr 2005 Location: tucson,AZ	cool thank you thats what i was thinking but im not to good at this kinda thing still learning. on my lcd controler it has a chip kinda like a prosesser chip but smaller and it has a sticker that says 12v 5v 3.3v so i guess any of the 3 would work but i think ill go with 5v 1amp. thanx brandon AKA Skullkeeper

26th March 2009, 11:18 PM	#4
dave_gerecke diyAudio Member Join Date: Dec 2007 Location: Vermont	Hello Brandon, Can you post a link to the datasheet of the LCD Controller, it might be good to have others take a look at it also. It's possible that the chip needs all three voltages, just one, or some other combination. Peace, Dave

26th March 2009, 11:40 PM	#5
skullkeeper diyAudio Member Join Date: Apr 2005 Location: tucson,AZ	here is the data sheet mine is v1.2 this one says v1.1 not sure on differents. LCD CONTROLER

27th March 2009, 01:12 AM	#6
dave_gerecke diyAudio Member Join Date: Dec 2007 Location: Vermont	Hello Brandon, From what I read on the docs for the LCD driver board, it appears that the board will output the necessary voltage to drive the LCD screeen, and setting the correct jumper position on J501 will set the output voltage to the one you want. To power the board it seems that it needs a 12v power supply, at least 2.5 amps total to handle the power needs of the board and the LCD monitor. Hopefully someone else will give some input to confirm or refute my input. Peace, Dave

27th March 2009, 01:17 AM	#7
skullkeeper diyAudio Member Join Date: Apr 2005 Location: tucson,AZ	yea i kinda saw that after i posted the pdf was just thinking would a standerd lcd power supply be ok 12v 4 amp

27th March 2009, 01:27 AM	#8
dave_gerecke diyAudio Member Join Date: Dec 2007 Location: Vermont	12v @ 4 amps should work fine. Having extra current available is a good thing. If the equipment doesn't need it, it won't use it, but a supply that is designed to be able to supply more current that it is being asked for will run cooler and be more reliable and long lasting. There are other factors that affect the life of a power supply (like anything else), but this will definitely help the supply last longer. Peace, Dave

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)