d2k Posted June 28, 2003 Report Posted June 28, 2003 Hey All...Found a place in AU that has some 40 x 2 displays goin for $25AU - which is roughly a tenner in the UK ;)...They ship to most places it seems...http://www.oatleyelectronics.com/displays.htmlI got 2 of em....:)Peace...Dan Quote
Guest cem3340 Posted September 16, 2003 Report Posted September 16, 2003 Just received some of these units. Must say they are prime spec, brand new backlit devices made by Hyundai. I will be ordering some more as they will eventually run out. Anyone who can point to a better deal is a true champ.thanks for the scoop d2k!! Quote
d2k Posted September 16, 2003 Author Report Posted September 16, 2003 Hey Cem....What Inverter did u use for EL backlight for these then? I wasn't too sure and have only tested them with no backlight as of yet...For more deals check these two places - both been mentioned here somewhere prior:http://www.bgmicro.com/1st page of PDF catalog. I think Pilo has used these successfully with a homebru psu for the backlight.www.pmb.co.nzFound by Ian. Another great deal!BestDan Quote
Guest cem3340 Posted September 17, 2003 Report Posted September 17, 2003 Good question! I havent fired up the backlight either as yet, just tested with standard connections to see if they all worked. Looking at the info on them I'd suggest they are probably LED backight units which means you need to shove about 4.0 volts into the backlight connection. You could start lower and slowly up it if you are not sure but dont go above around the 4 volt mark or you'll kill it.If the above test proves futile, it may be they are EL devices in which case you need to shove around 100volts @ 400Hz into it. There are heaps of generic El inverters around. If you are stuck and dont mind paying a premium, check out Farnell as they have a range of generics for around 50 to 100 bucks if I remember right Quote
Nomical Posted September 17, 2003 Report Posted September 17, 2003 What's the problem?When you go to that site it states the 2x40 display has no backlight and uses an EL supply voltage of 100Vrms, 400 Hz. Quote
Guest cem3340 Posted September 18, 2003 Report Posted September 18, 2003 Nomical, I assume you have bought some of these units? The info on the website and what I actually received are 2 different things. It would appear the info on the website is simply a copy of the "generic" info available on the Hyundai website. Mine definately are backlit. The fact it says it needs an EL supply of 100V @ 400hz also should make it clear the devices are backlit. (for those who dont know, EL means Electro Luminecent) It would appear from the Hyundai info I have, this particular model of display can be provided with 1) no backlight, 2) LED backlight or 3) EL backlight.The units I have sitting in front of me do not look like EL devices. They have wires soldered to the backlight PCB connections and have the "usual" plastic backing unit that backlit LCD's have (the PCB connections are marked A and K which in itself points to it being probably LED). Looking at the device closly and comparing it to other backlit devices I have, it looks to me to be an end lit LED type device. The plastic backing to the Liquid Crystal Laminate is far to thick to be an EL type device. If anything, from the size of the backing unit, it may even be a cold cathode tube fitting.Thus, this is what d2k is questioning. As pointed out above, I have yet to test the backlight but as they are prime spec new units, I will assume the backlight works. Quote
Guest cem3340 Posted September 18, 2003 Report Posted September 18, 2003 :-[Well get me a spoon and let me eat my words :oYes, these are definately EL devices, as such d2k, you will need to get hold of an inverter that puts out 100v @ around 400hz(shouldnt be hard to find) So from now I think I should just keep my lips  :-XCheers Quote
d2k Posted September 18, 2003 Author Report Posted September 18, 2003 heh, okay - so the hunt is on for an EL inverter unit :)CheersDan Quote
Guest cem3340 Posted September 18, 2003 Report Posted September 18, 2003 Ok, a suitable inverter is available from Farnell (probably elswhere as well)The device is manufactured by Densitron with a part number of DAS5V3AFarnell's part number for this device is 175264 and cost $66.12 AUI'd suggest that you may be able to source it cheaper elsewhere or a similar device, but if you get stuck, at least this is one source. Quote
Guest cem3340 Posted October 4, 2003 Report Posted October 4, 2003 OkA bit of an update on the Oatley LCD's. I looked around for a cheap solution on the EL inverter issue and found one. I have bought a couple of those ELrope lights used by car crazzies and PC modders to brighten their days.. ;). Rip the light rope of and bingo, the inverter on each works a treat. Only cost me 20 bucks each as well.I agree that ELbacklights can be a problem due to them gradually losing their brightness. The way most manufacturers of equipment overcome this is to have the backlight only come on during times that you are reading the LCD. This increases the lifespan dramatically and is really simple to impliment.cheers Quote
d2k Posted October 5, 2003 Author Report Posted October 5, 2003 Okay, I just won a cpl of regular LED backlight 4x20's off ebay, so now I have these 2 Oatley's going spare, havn't been used (except 1 just to test) so if anyone want's em I'll let em go for the same price I paid - or roundabouts anyways...;)BestDan Quote
Steven_C Posted November 6, 2003 Report Posted November 6, 2003 I got 2 from oatley, and they are not backlit... at least I think not... they are thin, not thick like backlit ones, and have no plastic bit at the end, or on the back... just glass, metal and a PCB, but it would be nice if I was wrong.wouldn't the EL arrangement be a potential source of jitter?was your EL power supply from Jaycar?EDIT...where did you connect the EL power to? I can only see connections for an LED backlight (A, K) but my unit is too thin to be LED backlit, I can't see any indication that it could be EL type either... no markings that say 100v or 400hz :-/ Quote
Steven_C Posted November 20, 2003 Report Posted November 20, 2003 (Bump, I would really like to know)I got 2 from oatley, and they are not backlit... at least I think not... they are thin, not thick like backlit ones, and have no plastic bit at the end, or on the back... just glass, metal and a PCB, but it would be nice if I was wrong. wouldn't the EL arrangement be a potential source of jitter? was your EL power supply from Jaycar? EDIT... where did you connect the EL power to? I can only see connections for an LED backlight (A, K) but my unit is too thin to be LED backlit, I can't see any indication that it could be EL type either... no markings that say 100v or 400hz Quote
Guest cem3340 Posted December 15, 2003 Report Posted December 15, 2003 Steven_C,Got your message, sorry for the late replay (Xmas and stuff). Anyway, down to business... ;D The units I have ARE definately EL type devices. They are approx 10 mm thick and are marked HC40201-B and are manufactured by Hyundai. Sticking out from one end is a white plastic bit which is soldered to 2 pads marked A and K. I suspect it is a standard board that can accomodate EL or LED backlight.Yes, the invertor was taken from one of the car EL cable light kits from Jaycar. It puts out around 110v @ 400hz so was ideal for the job. I haven't had any probs with jitter or interlaced noise at all using this device.They are nice little units for the price. I hope yours are similar. ???If you need any more help, sing out.ciaoCEM Quote
Steven_C Posted December 16, 2003 Report Posted December 16, 2003 Hey Cem, thanks for the reply! :) Sounds different to mine (I think it is 7-8 mm thick, including PCB), but I'll have to pull my MB apart to have a look! (not this week though!)...Steve Quote
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