I was thinking the same as wa2ise..., except using a 24V or 48V Supply instead of 12V.

Connect several arrays of Series LED Strings, driven by a 24VDC 2 Amp supply.

For the Reds, (6) Diodes in Series, ballasted by a 26 Ohm Resistor... figuring:
  • FVD for each Diode is 3.0 Volts,
  • Peak Regulated Output DCV from the Supply is 24.0VDC,
  • 230ma is not excessive (renders no loss of smoke).


5 "Strings" of 6 Diodes in Series, with each "String" drawing 0.23A equals 1.15 Amps for the Reds.

The Yellows would be similar, except the Resistor would be 60 Ohms, so as to allow 100ma flow, and total draw from all 5 "Yellow Strings" would be 0.5A

Total Load Current for both Red and Yellow combined = 1.65 Amps at 24VDC

-- Scott

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!