I am currently working on a project that need to make the led blink one by one like following effect?.
but the led we have is input with 8VAC.
how can i do that?
i was planning to use shift register but does it work with AC external power?
I am currently working on a project that need to make the led blink one by one like following effect?.
but the led we have is input with 8VAC.
how can i do that?
i was planning to use shift register but does it work with AC external power?
Got a datasheet for your LED?
No, shift register will not work with AC.
george221:
but the led we have is input with 8VAC.
I very much doubt that! It would contain a bridge rectifier and be perfectly/ equally happy with DC. 8VAC is a rather unusual specification however. You really must cite the datasheet for a proper answer.
here is the info for the led
http://www.lumificient.com/commercial/products/accent.html
in this case i think switch AC to DC LED would be way easy to do it?
Controlling each strip is fine, controlling each led on the strip... nope
cjdelphi:
Controlling each strip is fine, controlling each led on the strip... nope
i will cut them into 1 piece, so i can program that effect( blink one by blink)
but the external battery is AC, and i dont know to connect it.
Batteries tend to come in dc...
Leds will run on ac or dc, unless the circuit is expecting strictly ac.
Just try a low voltage dc with a resistor (3vdc - 300ohm resistor) , crank up the voltage until it lights... if it does not, pulsed DC might work, failing thay extract the led from each and repeat.
OK, now we have something to go on.
Given that nowhere in the "information" is actual detail or a clear illustration of the LED modules, it is a pretty safe bet that each LED unit is in fact, two LEDs wired "back to back" so that one conducts on the positive half cycle, and the other on the negative. In fact, this is the only way short of using a bridge rectifier, that they can avoid damaging the transformers with unbalanced DC current.
They may also be using two LEDs in series for each of the "back to back" halves to suit the 8V.
Given all this, you are far better off to go and buy some of the more common LED strips, the ones using WS2801 individual drivers if you want full colour control. About $1 per LED or less.