Evan Cihlar posted:trainman48 posted:Does anyone know of a place where I can purchase a light flasher that runs on 14 VAC? I want to modify an old Marx bubbling water tower that's been in my parts drawer for way too long. I've tried Radio Shack, Amazon, and eBay with no luck. Perhaps cannibalizing some old blinking signal? Any help will be greatly appreciated.
A 555 timer circuit would be the cheapest and most customizable way to do this. I have included a schematic - you can vary R1 and R2 to adjust the speed of the light. You can ignore the 9v in as many 555 timers are rated much higher than that.
Evan, I think you missed the part in the OP about running on 14VAC. While there are indeed devices that could run on higher voltages, I don't know of any 555 timers that run on AC, so you would also have to add some rectification in front of the circuit. Not impossible, but a lot of soldering when you can simply purchase a complete device, flasher and all for about $3.
