Help for circuit for DIY Projector

TheBoiledDumpling

Feb 27, 2014
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If you noticed from the title of this post, I need help with the circuit of my projector. I am pretty bad at electronics, so my last resort is this thread. So, to start it off I have bought the parts already but I haven't had the time to assemble everything and figure of how to attach everything together (for the electronics). I have done my searching, but the really only helpful thing I found said to get a power supply for each individual component. But I don't really want to go through the hassle, I want to power the projector through 1 plug, not various plugs. So below is a my schematic and my specs for the components, but I can't figure out what kind of power supply to use.
 

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(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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From that block diagram, all you're concerned about is the backlight and the fans operating, it that correct?

The way you've drawn it won't work, but that's my impression of what you've shown
 

TheBoiledDumpling

Feb 27, 2014
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I'm also concerned on what power supply to use, considering the devices in it.

Also, how would I go about on the wiring so it works?
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Firstly, your wiring is unusual to say the least.

For the fans, you'll need a power supply of the same voltage that they are rated and able to supply the sum of the currents required by them.

Then connect the +ve lead of each fan to the +ve output of the power supply. Connect the negative lead of each fan to the -ve output o the power supply.

Your diagram is correct for the black (presumably negative) wires leading to the fans, but the red (positive?) wire needs to go back to the power supply.

As for the LED driver and the panel, the exact wiring depends on the driver and the panel, but frequently there will be a power input to the driver (that is connected to the power supply, and an output that is connected to the LEDs.

If the LED driver operates from the same voltage as the fans, it can be connected to the same power supply. However note that the power supply will have to be able to supply all three of them, so make sure it can supply at least (preferably more) than the sum of all the currents.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Alright, thanks. I'll try it out during sometime my march break.

Hahaha, the first time I read that as "lunch break"

Good luck. If you have any more questions, feel free to ask.
 

TheBoiledDumpling

Feb 27, 2014
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I was searching around the internet for DIY Projectors, and I found this diagram. Should I put my components like that in the diagram, but just replace the original components of the diagram?
 

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¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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The components shown are different, so they are connected slightly differently.

Having said that, the method of connection is essentially the same.
 

TheBoiledDumpling

Feb 27, 2014
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So, the amount of volts, amps and watts in total of every component, I need to find a power supply that fits its needs?
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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You need a power supply which can produce the voltage required for each thing you're connecting to it and with a current capacity greater than the sum of the currents required for the individual devices.

Using devices which work from a low voltage power supply is far safer than using the mains.
 
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