As i said no dimming.
tried a different dimmer:
[Ebay Link Removed] 5V 6V 12V 2A DC Motor PWM Speed Control Controller Speed Switch LED Dimmer FAN[/url]
I have been stuck with that issue for a long time.
I would REALLY REALLY appreciate if some one couled figure out what the F**k am i doing wrong!
ONE MORE test.. Use the 5V but check the "output" channel (same terminal block as the input.. IF 5V just run the pos side to the LDD. Bridge the grounds of the 2 ps.
until see some specs your PWM output on that is probably unusable for LDD's
I'M taking no responsibility for letting any magic smoke out..
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That is a strip light dimmer.. "Technically" w/ the 5 V in it should work OK (never tried it) but there may be some issues here .. The "type" I'm familiar w/ is this:
Which taps off the MOSFET (added wire inside, on yours probably the gate of Q1 (by r3 most likekly..)
IF you add a wire to that and run it to the LDD PWM out, remove the "ground" to the LDD, Ground the 2 ps together (switch to 9V or so, low amps)
you should be good to go..
You can try removing the ground from yours to the LDD but connect the grounds bhind the unit to the 2 power supplies..but not guaranteeing it..
You can stick a VOM between your 2 output wires and seeing if it is at 5V. Then dim. most meters will average and it will appear to drop in voltage (but not really, just changes on/off time..)
Next possible complication is the PWM output is not in the Hz range of the LDD (most are)
NOTE above, due to the extra wire the "output" of the dimmer is never used..though it would be "possible" to skip the wire and just use a 5v ps like you did. Never had one to test..
The internals usually have a voltage regulator to drop the "input" to logic level 5V or so (3.3 whatever, depends)
your dimmer doen't show it will work at less than 12v (probably a lie but 5V may be too low)
Another solution was getting a 12V output "step down" voltage regulator, adding it to the 48V line, feeding to the dimmer and, using the same 1 wire addition.. attaching to the LDD..
different controller, same principal:
Oh I'm also guessing your "output" you are using is supposed to be 10VPWM (more industry standard than 5V).. Need better specs on dimmer..
Motor speed controls generally use a higher Hz frequency than LDD's (in the MHz range)
More I look at it the more likely the PWM side is 10v PWM..
WELL (and you owe me
IF this is the same thing)
Looks like you do have 5V PWM (freq. unknown) IF it is like this one..
In which case change your feed power to 12V (try a 9V battery, should work)
If that doesn't work the neg to the LDD needs to be removed and ps neg bridged b4 the unit..
Got to admit a bit confusing..
Lot of wasted writing here..