12v Blinking circuit

Stilgar · Post by **Stilgar** » Sun Mar 08, 2009 2:25 pm

Folks,
I need a couple 12v blinking circuits for the nav lights and strobes in my next starship model.

Any suggestions??

Stilgar

USS Atlantis · Post by **USS Atlantis** » Sun Mar 08, 2009 4:26 pm

Any reason it has to be 12v?

I know Don (DLM) has a blinky circuit for sale on his site, and I have a different one designed up to run on 9v

Ziz · Post by **Ziz** » Sun Mar 08, 2009 4:56 pm

If you can't find one that's 12v, just branch off a lead off the + side of the power source, then put a resistor on the + side of the power connection to the circuit to bring it down to the voltage you do need.

http://www.zizolfo.com/power%20circuit.JPG

Stilgar · Post by **Stilgar** » Sun Mar 08, 2009 5:27 pm

Ya..it needs to be 12v due to the 12v CCFLs that are in the model.

Stilgar

Umi_Ryuzuki · Post by **Umi_Ryuzuki** » Sun Mar 08, 2009 7:23 pm

Using just a resistor will fail.
Typically there will be too much amp draw, and
the heat will kill the resistor, and the circuit will die.

Use a simple LM317 adjustable regulator and build a little
voltage regulator for the job. Also leave room for a heatsink
and venting, even it gets a bit warm.
http://www.queensown.org/technical-data-sheets-5.html

Want all the goodness without the heat and more efficient?
http://www.dimensionengineering.com/DE-SW033.htm
This has a 1amp max draw. There is a 5volt version also.

Ziz · Post by **Ziz** » Sun Mar 08, 2009 7:35 pm

Stilgar wrote:Ya..it needs to be 12v due to the 12v CCFLs that are in the model.

Stilgar

You didn't say that originally. More information up front usually yields better answers, less "trial-and-error".

jwrjr · Post by **jwrjr** » Sun Mar 08, 2009 10:34 pm

My strobe + flasher module runs on anything between 7 and 24 volts. So 12 volts would not be a problem.