Inline Power Switch Brick
This project uses the relay/switching power supply board described in the light switch project (minus the header for connecting to the Cap Touch PCB), but places it in an enclosure similar to a laptop power brick. A 3-prong 15 Amp IEC cable is plugged into the input side; the appliance or light to be powered is plugged in the other end - it is a regular NEMA plug. This board has 120VAC mains power exposed as well as the 170 VDC that drives the switching power supply. I would advise anyone but a well trained electrical engineer (or equivalent) not to build this as inadvertently touching either of these points would likely kill you. But hopefully some of the work done here will help someone with a project of their own.
Beyond the finished relay/power switcher board described in the light switch project, there are only a few additional parts:
Beyond the finished relay/power switcher board described in the light switch project, there are only a few additional parts:
- 3D printed parts
- Black, White and Green 14 gauge wire for hot, neutral and ground wires
- Lugs, 6 each. I used Digikey A27811CT-ND
- White 18 gauge neutral wire soldered to the PCB, then spliced to the neutral wire; No ground wire required for PCB.
- Heat shrink tubing (to cover the white wire Neutral splice)
- Snap-in NEMA AC 15 Connector, Digikey part number Q337-ND
- Snap-in IEC Male AC Connector, Digikey part number CCM1402-ND
- Screws to lock it all together, McMaster-Carr 90935A104 or 90935A133 (not sure which - sorry).