Updated Traveler's Night Light Parts List 2020
- LED Ultra Bright White LED
- R1 Resistor 47 KΩ
- D1 Diode, 1N4003 or higher, 200V, 1A
- Non-Polarized AC replacement plug
The parts list changed recently because when I started this project
the LEDs were more robust and could take a higher reverse voltage. Which allowed
me to use a 104 - 334 (100 - 330 pf) capacitor and not the resistor.
There is another way to reduce the power used at the expense of using more parts.
I will eventuall try this way and put up that schematic and power usage value after
I test the next design thoroughly.
The LED, 47 KΩ Resistor, and the 1N4003 Diode.
The new design uses 1.2 mA of AC current for a power usage of about 144mW.
120 V * 0.0012 A = 0.144 Watts. or 144 mW
or at about 123 VAC ~148mW
The non-polarized AC replacement plug I used can be seen in the photos below.
I originally found these at ACE Hardware but during the 2019-2020 SARS CoV-2
Corona Virus Covid-19 pandemic I bought these through Amazon. I liked
this particular design because it had enough room for all the parts used
and the neck was the perfect place for the LED to stick out of with no way for
small fingers to get inside. If you're still worried about small fingers or
probes getting into the plug all bare wires can be covered with some kind of
brush on or dip-in rubber, or the hole can be sealed with electrically safe RTV.
The Ultra-Bright white LED can be salvaged from any number of items, a dead
LED AC bulb, solar walk-light, or flashlight are places I've gotten mine from.
The Travler's Night Light - The resistor, diode, and LED can be seen.
The Travler's Night Light - The resistor and LED can be seen.
The diode is a bit hidden inside the heat shrink tubing.
The Traveler's Night Light completed inside the non-polarized plug.
The Traveler's Night Light plugged into an AC extension cord.