easy circuit for constant lighting?

To keep them from flickering, you just need a fairly large cap and the resistor & diode you'd normally use for track power.  To keep them at constant intensity, you'll have to add a constant current regulator, the CL2 is a nice two terminal device that will do that with minimal parts.  Just replace that 47uf cap with something like a 470uf and you'll have constant current and flicker protection.

Thanks Gunner,

 do you think Radio shack has these or just order a specific CL2 online?I have all the componets except that one. Maybe a link would be great.

Here are posts with a few pictures. RS does not carry the CL2-n3 chip as far as I know. I ordered mine from Mouser

www.jcstudiosinc.com/BlogShowT...=619&categoryId=

www.jcstudiosinc.com/BlogShowT...=409&categoryId=

Also here

www.jcstudiosinc.com/BlogShowT...=487&categoryId=

And here using a 7805 regulator,my preferred method

www.jcstudiosinc.com/BlogShowT...=408&categoryId=

Dale H

 You can also do constant current with a variable three terminal regulator.  For currents more than about 30ma, I'd change the regulator to the LM317T in the TO220 package.

Thanks guys.

http://www.mrollins.com/pwrsp2.html

Where did you get the idea that this offers constant intensity and non-blinking lighting?  Also, it's using a host of incandescent bulbs, the trend here is to go to LED lighting for the much lower power consumption and more even lighting.  This scheme uses a large bulb as a regulator for the voltage, further increasing the power consumption.

I'm guessing this is nothing like Patrick had in mind.

Would you like me to remove my post?

I don't have that kind of pull here, just pointing out that's probably not what the OP had in mind.

Just what "kind of pull" do you have?  LOL!

Very little I expect.

For those of us who do not wish to convert to LED's what type of circuit would work with incandescent lighting?  Thanks.

Well, except for the much higher currents involved, you can still use a constant current source. 

A couple of points.

• It's most likely unrealistic to get flicker-free lighting with incandescent lighting, the capacitors would be huge.
• The regulator would likely have to have a heatsink to handle the larger currents involved.

Truthfully, for incandescent lighting, I'd just stick with the factory solution.  If you're not changing the locations of the lights, you already have a solution.