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#1
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LED power requirement.
I have one of these cases: http://tiny.cc/xzd0b It has two LEDs behind the from cover that are not connected. The plug has 2 wires, Black and Red with a mall connector similar to a system fan plug. I am trying to identify where I can attack this to get the LEDs to light but I have no idea what voltage it needs or if I can simply splice it into a Molex connector. I have searched and left messages on various forums but no reply. Apparently no one still uses this older case. Does anyone have any ideas where I can hook this wire to? Thanks. Al. |
#2
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LED power requirement.
Allen Drake wrote:
I have one of these cases: http://tiny.cc/xzd0b It has two LEDs behind the from cover that are not connected. The plug has 2 wires, Black and Red with a mall connector similar to a system fan plug. I am trying to identify where I can attack this to get the LEDs to light but I have no idea what voltage it needs or if I can simply splice it into a Molex connector. I think you need a resistance in series. If you try to light an LED without a series resistor, you will have a dead LED. If you can figure out the LED drop voltage, you can subtract that from your DC power supply voltage and then figure the current for a given resistance. But you need to know about the LED. I cannot imagine anyone telling you what the LED is, that information does not come with a case. If there are no markings on the LED, you could take a macro picture, post it, and maybe somebody can identify it. I would post that link to a macro picture of your LED to an electronics group. They might give you a good guess about the proper voltage and series resistance. If you just want to light an LED, you can buy plenty that come with the data. Then you can connect it to a Molex connector through a resistor to get the data specified LED current. -- I have searched and left messages on various forums but no reply. Apparently no one still uses this older case. Does anyone have any ideas where I can hook this wire to? Thanks. Al. |
#3
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LED power requirement.
Another possibility... You could try connecting the LED through
one of your 5 V DC connectors. And use a variable resistor set to limit the current to 5 or 10 milliamps. And then carefully adjust the resistor to the brightness you want. Then if you want the variable resistor for some other use maybe later, you can disconnect it and use a fixed resistor. I used to mess around a lot with LEDs. I think a standard sized LED might take up to about 20 milliamps, but I'm sure LEDs have changed a lot since then. I don't recall very many blue LEDs at the time |
#4
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LED power requirement.
On 28 Nov 2011 23:15:02 GMT, John Doe wrote:
Another possibility... You could try connecting the LED through one of your 5 V DC connectors. And use a variable resistor set to limit the current to 5 or 10 milliamps. And then carefully adjust the resistor to the brightness you want. Then if you want the variable resistor for some other use maybe later, you can disconnect it and use a fixed resistor. I used to mess around a lot with LEDs. I think a standard sized LED might take up to about 20 milliamps, but I'm sure LEDs have changed a lot since then. I don't recall very many blue LEDs at the time The lead goes to something that is underneath a rubber cover that then connects to two tube shaped LEDs. From many hours of searching all I could come up with about that case complaints about no documentation so I thought someone on this group has encountered similar situations. I will have to cut open that rubber and see what's inside and take some photos like you say. Thanks. Al. |
#5
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LED power requirement.
Allen Drake wrote:
I have one of these cases: http://tiny.cc/xzd0b I don't visit redirects unless there is a description or a preview mode to tell the user where they are really going to visit. Besides, the real question isn't about what these LEDs are for but rather where to connect them - and that is a motherboard inquery but you didn't identify the motherboard (brand and model). It has two LEDs behind the from cover that are not connected. The plug has 2 wires, Black and Red with a mall connector similar to a system fan plug. I am trying to identify where I can attack this to get the LEDs to light but I have no idea what voltage it needs or if I can simply splice it into a Molex connector. I have searched and left messages on various forums but no reply. Apparently no one still uses this older case. Does anyone have any ideas where I can hook this wire to? One would be to the PWR header on the motherboard. The other would be to the HDD header (to show hard disk activity). Your motherboard didn't come with a manual that defines the various headers on it? There isn't an online copy of the manual at the motherboard maker's web site? |
#6
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LED power requirement.
On 11/28/2011 7:11 PM, Allen Drake wrote:
On 28 Nov 2011 23:15:02 GMT, John wrote: Another possibility... You could try connecting the LED through one of your 5 V DC connectors. And use a variable resistor set to limit the current to 5 or 10 milliamps. And then carefully adjust the resistor to the brightness you want. Then if you want the variable resistor for some other use maybe later, you can disconnect it and use a fixed resistor. I used to mess around a lot with LEDs. I think a standard sized LED might take up to about 20 milliamps, but I'm sure LEDs have changed a lot since then. I don't recall very many blue LEDs at the time The lead goes to something that is underneath a rubber cover that then connects to two tube shaped LEDs. From many hours of searching all I could come up with about that case complaints about no documentation so I thought someone on this group has encountered similar situations. I will have to cut open that rubber and see what's inside and take some photos like you say. Are you sure that those "tube shaped LEDs" aren't cold cathode tubes? |
#7
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LED power requirement.
VanguardLH V nguard.LH wrote:
Allen Drake wrote: I have one of these cases: http://tiny.cc/xzd0b I don't visit redirects unless there is a description or a preview mode to tell the user where they are really going to visit. Besides, the real question isn't about what these LEDs are for but rather where to connect them - and that is a motherboard inquery but you didn't identify the motherboard (brand and model). It's at the link, MouthGuard. Just move your little mouse up there and press the little mouse button... AND BOOM, YOUR WHOLE DAMN COMPUTER EXPLODES!!! Whatta wimp. -- It has two LEDs behind the from cover that are not connected. The plug has 2 wires, Black and Red with a mall connector similar to a system fan plug. I am trying to identify where I can attack this to get the LEDs to light but I have no idea what voltage it needs or if I can simply splice it into a Molex connector. I have searched and left messages on various forums but no reply. Apparently no one still uses this older case. Does anyone have any ideas where I can hook this wire to? One would be to the PWR header on the motherboard. The other would be to the HDD header (to show hard disk activity). Your motherboard didn't come with a manual that defines the various headers on it? There isn't an online copy of the manual at the motherboard maker's web site? Path: news.astraweb.com!border6.newsrouter.astraweb.com! border5.newsrouter.astraweb.com!news.astraweb.com! border1.a.newsrouter.astraweb.com!proxad.net!feede r1-2.proxad.net!weretis.net!feeder1.news.weretis.net! news.albasani.net!.POSTED!not-for-mail From: VanguardLH V nguard.LH Newsgroups: alt.comp.hardware.pc-homebuilt Subject: LED power requirement. Date: Mon, 28 Nov 2011 19:35:10 -0600 Organization: Usenet denizen Lines: 28 Sender: VanguardLH no-email Message-ID: jb1csa$56p$1 news.albasani.net References: b1u7d7dvdkmg6j111th9a20181be2fugh1 4ax.com Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: news.albasani.net 7iz5O9UM+Z4sep5TxZcfv4IGJwRnp8DUii5Idssf0rgUro3FGk f4rV5XKTI7JyUXqx84EC27Y0Ov4RXA+6ZfWw== NNTP-Posting-Date: Tue, 29 Nov 2011 01:35:07 +0000 (UTC) Injection-Info: news.albasani.net; logging-data="MaArk8Rf1btPPbltTw4CbV2VCPorpkJvobXJlEt5RYj+ t2esYzCkUR7NFBcirC6210phKhWbWldMgQFalXBJrN+62JGlvP WYlmz5Q9dOXh9QaEMySsa9DRGNVJ66DGFi"; mail-complaints-to="abuse albasani.net" Keywords: VanguardLH VLH811 User-Agent: 40tude_Dialog/2.0.15.41 Cancel-Lock: sha1:izbCy8MjsMeVBbg2DuL/2qgQ1cc= |
#8
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LED power requirement.
On Mon, 28 Nov 2011 22:28:09 -0600, Grinder
wrote: On 11/28/2011 7:11 PM, Allen Drake wrote: On 28 Nov 2011 23:15:02 GMT, John wrote: Another possibility... You could try connecting the LED through one of your 5 V DC connectors. And use a variable resistor set to limit the current to 5 or 10 milliamps. And then carefully adjust the resistor to the brightness you want. Then if you want the variable resistor for some other use maybe later, you can disconnect it and use a fixed resistor. I used to mess around a lot with LEDs. I think a standard sized LED might take up to about 20 milliamps, but I'm sure LEDs have changed a lot since then. I don't recall very many blue LEDs at the time The lead goes to something that is underneath a rubber cover that then connects to two tube shaped LEDs. From many hours of searching all I could come up with about that case complaints about no documentation so I thought someone on this group has encountered similar situations. I will have to cut open that rubber and see what's inside and take some photos like you say. Are you sure that those "tube shaped LEDs" aren't cold cathode tubes? No I am not. What would that mean as far as getting them to work? That just might be what they are. They look like tubes with bubbles suspended in some sort of liquid. |
#9
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LED power requirement.
Allen Drake ALDrake Spamex.com wrote:
Grinder wrote: Allen Drake wrote: John wrote: Another possibility... You could try connecting the LED through one of your 5 V DC connectors. And use a variable resistor set to limit the current to 5 or 10 milliamps. And then carefully adjust the resistor to the brightness you want. Then if you want the variable resistor for some other use maybe later, you can disconnect it and use a fixed resistor. I used to mess around a lot with LEDs. I think a standard sized LED might take up to about 20 milliamps, but I'm sure LEDs have changed a lot since then. I don't recall very many blue LEDs at the time The lead goes to something that is underneath a rubber cover that then connects to two tube shaped LEDs. From many hours of searching all I could come up with about that case complaints about no documentation so I thought someone on this group has encountered similar situations. I will have to cut open that rubber and see what's inside and take some photos like you say. Are you sure that those "tube shaped LEDs" aren't cold cathode tubes? Apparently that is the question. No I am not. What would that mean as far as getting them to work? That just might be what they are. They look like tubes with bubbles suspended in some sort of liquid. Okay buddy, pull it over... |
#10
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LED power requirement.
On Mon, 28 Nov 2011 19:35:10 -0600, VanguardLH wrote:
Allen Drake wrote: I have one of these cases: http://tiny.cc/xzd0b I don't visit redirects unless there is a description or a preview mode to tell the user where they are really going to visit. Besides, the real question isn't about what these LEDs are for but rather where to connect them - and that is a motherboard inquery but you didn't identify the motherboard (brand and model). It has two LEDs behind the from cover that are not connected. The plug has 2 wires, Black and Red with a mall connector similar to a system fan plug. I am trying to identify where I can attack this to get the LEDs to light but I have no idea what voltage it needs or if I can simply splice it into a Molex connector. I have searched and left messages on various forums but no reply. Apparently no one still uses this older case. Does anyone have any ideas where I can hook this wire to? One would be to the PWR header on the motherboard. The other would be to the HDD header (to show hard disk activity). Your motherboard didn't come with a manual that defines the various headers on it? There isn't an online copy of the manual at the motherboard maker's web site? The URL was very long but it really doesn't matter about the photo http://www.arcticmod.com/computer-mo...ilver-s.e..htm I have been unable to locate a manual but one review site adds this "optional UV CCFL that A-Top offers with the Gladiator and its power supply" So that must mean they are cold cathode florescent lights. Now I have something to search for. Thanks. Al |
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