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Step 4SOLDER THE COMPONENTS
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I have included a JPG graphic file and a metafile (UV Nightlight.emf) of the schematic below. The LEDs (*) need to be soldered to the resistors and then these components need to be soldered to the power supply. Allow enough extra wire so you will be able to move the LEDs around and aim them at the edge of the Plexiglas after soldering.
When you are finished you can squirt a little hot glue on and around the LEDs and resistors to hold everything in place and make sure nothing shorts out. Be careful not to fill your power jack up with glue or the connector may not go into it.
(*) LEDs are polarized components which mean they can be installed the wrong way. They need to be soldered into the circuit correctly of they will not work. There are several ways to tell which wire coming out of the LED is which. The easiest way for me to tell the difference is to look at and feel the round base of the LED. There is always a little flat area on the side of the base next to the lead that goes to the negative side of the power supply. Just feel around the base, find the flat side, and make sure that side goes to your negative wire.
(**) The power leads coming from the wall wart are also polarized which means, just like the LEDs, they can be hooked up the wrong way. You will need to check out the label on your wall wart to find out how which wire is + and which is -. Once you have the resistors soldered to the LEDs you can touch them to the power wires or power jack terminals to see if they light up. If they don't, simply reverse the leads. Once you get the LEDs to light up, solder them to the jack terminals or power leads.
.
I have included a JPG graphic file and a metafile (UV Nightlight.emf) of the schematic below. The LEDs (*) need to be soldered to the resistors and then these components need to be soldered to the power supply. Allow enough extra wire so you will be able to move the LEDs around and aim them at the edge of the Plexiglas after soldering.
When you are finished you can squirt a little hot glue on and around the LEDs and resistors to hold everything in place and make sure nothing shorts out. Be careful not to fill your power jack up with glue or the connector may not go into it.
(*) LEDs are polarized components which mean they can be installed the wrong way. They need to be soldered into the circuit correctly of they will not work. There are several ways to tell which wire coming out of the LED is which. The easiest way for me to tell the difference is to look at and feel the round base of the LED. There is always a little flat area on the side of the base next to the lead that goes to the negative side of the power supply. Just feel around the base, find the flat side, and make sure that side goes to your negative wire.
(**) The power leads coming from the wall wart are also polarized which means, just like the LEDs, they can be hooked up the wrong way. You will need to check out the label on your wall wart to find out how which wire is + and which is -. Once you have the resistors soldered to the LEDs you can touch them to the power wires or power jack terminals to see if they light up. If they don't, simply reverse the leads. Once you get the LEDs to light up, solder them to the jack terminals or power leads.
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