47
47: LED dimmer and power supply.
The last issue is providing power and dimming for the LEDs.
That’s not much of a problem for the single strip red and blue
LEDs. For these I purchased two 12 vdc 2 amp power supplies
for six dollars each. However to power the 6000 Warm white
LEDs at 1 milliamp per LED works out to 6 amps! So the usual
3A RadioShack wall adapter won’t handle the load! A 12 vdc
20 amp switching power supply costs $33. The three dimmers
will handle up to 8A and cost $5.50 each. I ordered all of the
LED strips, power supplies and dimmers from Amazon.com.
On to track laying
So with this installment, the benchwork, roadbed, backdrop,
fascia, and lighting are complete. Now it’s time to lay track,
install wiring, and ballast. Did I miss something? Oh yes, run
trains!
