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Mike some switches run on 12v, some have resistors in them for 120v. Here's one that doesn't require you to mess around dropping the voltage to 12v. It's my go to for projects that don't have to be overly pretty.
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Larry,The light is built into the rocker switch, I guess it is an LED.Mike
More info @ Wikipedia.Best,Anand.
Lots of local stores closed, but no, they are not online or locally to me (yet).
Mike, You should probably get a switch like Jeremy suggests, or use a separate switch, and LED as I did. That way you switch the AC mains, and pull LED power from the 24V output of the PS. You could have the switch on the back, and the LED on the front panel.You can use this calculator to find the correct resistor:http://led.linear1.org/1led.wiz I used this LED:http://www.digikey.com/product-search/en/optoelectronics/led-indication-discrete/524729?k=p563-nd and this resistor: http://www.digikey.com/product-detail/en/vishay-bc-components/PR01000101501JR500/PPC1.5KW-1CT-ND/597203
Thanks. The store close to me closed last year.Larry,Thanks. I have two different red LEDs on hand. One says it is 1.7Vdc-2.2Vdc @ 15mA-25mA and the other is 1.7Vdc-2.2Vdc @ 20-30mA. When I run the four permutations of this through the calculator I get four different resistors: 820 Ohm, 2W; 1.0 kOhm, 2W; 1.2 kOhm,1W; and 1.5 kOhm, 1W.How do I know which one to use? Also, I have ordered in some of the switches Jeremy recommended so I have options.Mike
The specs for the LED's you have are probably a usable range for using a battery to power the LED. If your LED lists 2.2 forward voltage then it is the same as I used, so a 1.5K ohm 1 watt resistor should work fine. On mine the illumination is about perfect, not too dim, and not too bright. a 1 watt resistor is probably overkill, I think 1/2 Watt is closer to the formula calculation, but the calculator makes this statement: Resistor power ratings are chosen based on operating within 60% of the rated value. for best heat dissipation 1 Watt is probably a better choice as the calculator suggests.
Larry.Thanks. How did you secure the LED into the wood face plate?. I have some plastic grommet type devices that are designed to secure an LED to the thin metal of a chassis but I'm unsure how it would work with wood. I have my eye on a nice piece of spalted Tamarind for the front.Mike
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