I got a bag of like 25 LEDs with dropping resistors for operation on 12VDC on Amazon for $8.00, I think.
Dan Sent from my iPad > On Jan 11, 2016, at 9:22 AM, Curt Raymond via Mercedes > <mercedes@okiebenz.com> wrote: > > You can buy LEDs with the resistor already integrated. In fact I think with > some you can even buy a PWM switching power supply already integrated so you > can run them at your chosen voltage. Thats what I'd intended to do but not > what actually happened. > The LEDs I ruined were surface mount package which wasn't as easy to solder > as I'd hoped. Looking around I found a bag of through hole LEDs I'd bought > but never used. Dropping one cell from my battery pack gives me 3.6v using > rechargeable batteries which I tested and appeared to be acceptable with my > 35ma LEDs so I rewired the thing with those. I finished it last night and > testing shows that it works pretty well for a reading light (its intended > purpose) although it could stand a little work aiming the LEDs better. > I think you missed the point of my diode, I've got a single pole single throw > 3 position switch. On low it activates one string of lights, on high it > activates both. The diode sits on the jumper from the high side so that it > doesn't turn on when low is called for. > Also in my experiments LEDs must be used in parallel which matches my > understanding of how they work. Because they are one way valves the > electrical pixies won't pass through like they would a normal valve. > Certainly when I strung them up in series they wouldn't do anything... > -Curt > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
