How do I make a pulsating switch?

[Flashanator]

Hi. I wont a simple 3volt bulb to turn on/off in this circuit: Can a pulsating switch be made?

It has to turn on then off, I need 3 separate types:

One switch turning on every 0.5secs,
One every 1sec,
And one every 1.5secs.

Any suggestions on how to do it? Anyone care to make some for me? Me pay of course.

 

[TranceAddict]

http://en.wikipedia.org/wiki/555_timer_IC

http://home.cogeco.ca/~rpaisley4/LM555.html


use 555 timer in astable mode to drive transistor as switch

 

[Flashanator]

I wouldn't know where to start:laughing: I have never studied any of this stuff.

Can you buy them ready to oscillate the power at certain times?

 

[VegasF6]

Maybe if you told us what you are trying to acclompish and what your limitations are, it would be easier to help? As Trance addict showed, a 555 timer controlling a transistor is a great way to do this.

Does it have to be a bulb? How about LED? Are you limited to 2xAA or optional? White only, or colors?

You can purchase flashling leds.
http://www.google.com/search?q=blin...ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7GGLG_en

Here is a led flasher kit:
http://www.allelectronics.com/make-a-store/item/LEDKIT/LED-FLASHING-KIT//1.html

An adjustable timer you can ues to control anything you want up to 15V and 3 amps:
http://www.allelectronics.com/make-a-store/item/MK-111/ADJ.-INTERVAL-TIMER-KIT//1.html

A variable strobe kit (that got terrible reviews for some reason)
http://www.allelectronics.com/make-a-store/item/STROBE-1/VARIABLE-STROBE-LIGHT//1.html

A bunch more here:
http://www.goldmine-elec-products.com/products.asp?dept=1067

Hope some of that can help you. I would volunteer to make some for you at a very reasonable price if I could find the time, but honestly lately I just can't seem to get my bench even for my own projects.

 

[doctaq]

if you used this one
http://www.allelectronics.com/make-a-store/item/MK-111/ADJ.-INTERVAL-TIMER-KIT//1.html
would you be able to put leds on it? either little 5mm or high powered?