• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Lighthouse flashing light circuit

Status
Not open for further replies.

zman

New Member
I'm trying to find a simple and easy design for a project my friend decided to build and now needs help with (of course!). He has built a 6 foot light house at a local hang out and needs a simple flashing light circuit. We are trying to create a circuit that would flash on 4 seconds off 2 etc. He has it wired for 120VAC with all the bells and whistle for the light house, with the exception of the light. He left that part to me. I'm new to creating circuits and seek some expert advice....all info is greatly appreciated!! Thanks
 

Jaw174

New Member
well, in short, the best way to make is look nasatlig is to add a spinning light, using a mirror and motor with a steady on light, but if he realy wants a flashing light, its very possible.. im not sure how tho.. hehe
 

bogdanfirst

New Member
the best way is to use a 555 circuit.
i can make the flashing circuit, but i am not sure how to drive the bulb. is the light a 120V or is it low voltage
i'll be back with the schematic soon.
 

zman

New Member
Bogdanfirst,

It would be a 120V lamp, unless I could utilize a different style lamp to provide a bright flash for this design. Thanks in advance!
 

seeker

New Member
Hi zman,

Don't know how bright it has to be but you might try a 12 volt bulb and a turn-signal blinker.
 

Jimbo

New Member
You will probably need some zero-crossing detection in your drive-circuit, otherwise the music in the hangout might suffer. I *think* the MOC3020 optocoupler does exactly that. It may be the 3040 as well (or was it the 3021 - ahh, the stuff people forget). Just enter them in Google and I'm sure you'll find all the application notes you'll ever need.

The alternatives are a noise cancellation circuit with very expensive coils, or synchronising the 555 timer with the net frequency - don't immediately know how to do that, other than "AND"ing the timer output with a zero crossing pulse.
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top