Halloween lights

[Craig.Stevens]

Hello anybody,

I am looking to make glowing eyeballs for our halloweeen display.
2 Lightbulbs 25-40 watts. Oscillating from about 20% to full brightness every three seconds.

Any prefab circuits out there I could use?

What do you think I would call this kind of circuit?

I do have electronics background - but I do not really use it very much.

Thank you.

 

[HarveyH42]

I'd have to guess that these are 110 VAC bulbs. Haven't seen anything like that. DC powered lights would be simpler, safer too.

 

[Craig.Stevens]

DC works for me.

Got any circuits i can use?
Thanks

 

[MrDEB]

I have a PIC program

that controls 3 LEDs using PWM.
could be converted to 2 LEDs or 4 LEDs very easy.
uses a 18F1320 PIC, written in swordfish.
code as is resembles a candle

 

[HarveyH42]

Here is an oldie, but works good, using OPamps. If you search the web for 'Fading Red Eyes', you find lots of links to various modifications of this basic circuit, might find one that better suits your needs.

https://www.electro-tech-online.com/custompdfs/2009/10/473-click_here_.pdf

 

[Craig.Stevens]

Thanks everyone I will check it out.