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Step 6Assembly Continued
Solder the wires from the secondary side of the transformer to the AC input pins of the rectifier on the circuit board.
To hook up the DC jacks, cut nine pieces of wire about 1" long. Solder wires from the center pin of Jack 1 to the center of Jack 2, Jack 3 to Jack 4, and Jack 5 to Jack 6. With the remaining 1" segments, daisy chain wire to a remaining pin on each jack. This will link all the negatives together.
Cut four 3" segments of wire. Solder one end of each to the 12V regulator output, 9V regulator output, 5V regulator output, and a common negative point, respectfully. Then solder the other ends to a center pin of a 12V jack, a 9V jack, a 5V jack, and the daisy-chained jack negatives, respectfully.
Put the LED holder in place, and snap the LED in.
With the board up away from the jacks, make sure there are no short circuits, especially on the AC side of the circuit, and then carefully plug in the power supply and see if it works. Use a multimeter to check that there is 12V at the 12V jacks, 9V at the 9V, etc. The LED should light up.
BE EXTREMELY CAREFUL AS YOU HAVE LIVE EXPOSED 120V WIRES THAT COULD ELECTROCUTE YOU VERY EASILY.
Next, put some electrical tape across the DC jacks so that nothing on the circuit board can touch them and short out. The metal plates on the regulators are connected to ground and will short out anything they touch. Also tape the pins of the capacitors and around the 120VAC connections for safety.
If everything works great, bend the circuit board back into the case. A nice touch would be to put some two sided tape on the back of it and stick it to the inside of the cover plate. Screw the box shut.
To hook up the DC jacks, cut nine pieces of wire about 1" long. Solder wires from the center pin of Jack 1 to the center of Jack 2, Jack 3 to Jack 4, and Jack 5 to Jack 6. With the remaining 1" segments, daisy chain wire to a remaining pin on each jack. This will link all the negatives together.
Cut four 3" segments of wire. Solder one end of each to the 12V regulator output, 9V regulator output, 5V regulator output, and a common negative point, respectfully. Then solder the other ends to a center pin of a 12V jack, a 9V jack, a 5V jack, and the daisy-chained jack negatives, respectfully.
Put the LED holder in place, and snap the LED in.
With the board up away from the jacks, make sure there are no short circuits, especially on the AC side of the circuit, and then carefully plug in the power supply and see if it works. Use a multimeter to check that there is 12V at the 12V jacks, 9V at the 9V, etc. The LED should light up.
BE EXTREMELY CAREFUL AS YOU HAVE LIVE EXPOSED 120V WIRES THAT COULD ELECTROCUTE YOU VERY EASILY.
Next, put some electrical tape across the DC jacks so that nothing on the circuit board can touch them and short out. The metal plates on the regulators are connected to ground and will short out anything they touch. Also tape the pins of the capacitors and around the 120VAC connections for safety.
If everything works great, bend the circuit board back into the case. A nice touch would be to put some two sided tape on the back of it and stick it to the inside of the cover plate. Screw the box shut.
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