Robert F Jarvis
Well-Known Member
We are running several LED tapes to backlight some 'windows'. One set is controlled from a DMX controller powered by a 12v power brick and another two sets straight from simple 12v power bricks.
All three 12 volt supplies are fed from a ADJ DP-415 dimmer pack so we can control things from the booth. The DXM controller is powered up at the beginning from one of the packs four outlets (#1) and the other two bricks are fed straight from the 2nd and 3rd outlets. When up and running all work very well. But, once all the dimmer pack channels are pulled down and the console closed, strange things happen: All the LED tapes will flash about once every 10 seconds!
It is as if the dimmer pack is releasing a power burst on these occasions. The dimmer pack is normally run in "Switch" mode but was turned to "Dimmer" to test. There was no difference. So now we plug the DMX controller's dongle into a wall socket and whilst the other two have to remain on the dimmer (to keep control) we have to disconnect the mains from the pack between shows. Finally, a tungsten lamp was connected as a test and we did not observe any flashing.
On the other side of the stage I have a 20Amp 12 v supply that feeds a 30 channel DMX controller in turn feeding 3 LED tapes and do not have nay problems. So some thing to do with those power brick coupled to the dimmer outlets. Ideas?
All three 12 volt supplies are fed from a ADJ DP-415 dimmer pack so we can control things from the booth. The DXM controller is powered up at the beginning from one of the packs four outlets (#1) and the other two bricks are fed straight from the 2nd and 3rd outlets. When up and running all work very well. But, once all the dimmer pack channels are pulled down and the console closed, strange things happen: All the LED tapes will flash about once every 10 seconds!
It is as if the dimmer pack is releasing a power burst on these occasions. The dimmer pack is normally run in "Switch" mode but was turned to "Dimmer" to test. There was no difference. So now we plug the DMX controller's dongle into a wall socket and whilst the other two have to remain on the dimmer (to keep control) we have to disconnect the mains from the pack between shows. Finally, a tungsten lamp was connected as a test and we did not observe any flashing.
On the other side of the stage I have a 20Amp 12 v supply that feeds a 30 channel DMX controller in turn feeding 3 LED tapes and do not have nay problems. So some thing to do with those power brick coupled to the dimmer outlets. Ideas?