On/Off Alternating Direct current other than a power switch?

[Biasless]

Hello,

I would like to know if there is a part I can buy that will alternate my dc power circuit on/off at short intervals automatically


All help much appreciated,
Cheers,
Nick

[davenn]

Hello,

I would like to know if there is a part I can buy that will alternate my dc power circuit on/off at short intervals automatically

All help much appreciated,
Cheers,
Nick

yes you could with an oscillator or timer
Tell us more about what you are trying to achieve so we can help you better

Dave

[Biasless]

Thanks for the help,

trying to have a electric magnet turn on/off at a regular interval

So the magnet would turn on for a second, then turn off for a second
repeating that indefinitely

[davenn]

ok you could use something like this....

http://www.physicsforums.com/attachment.php?attachmentid=36216&stc=1&d=1307430153

see how ya go

cheers
Dave

Yeah, sorry abt the broken link, the net crashed as I was trying to do the post
and had to wait till now when i got home from work to repost.

[Biasless]

thanks um, the attachments broken ?

[davenn]

now the only thing you havent said is what voltage you are running the electromagnet from ?

I have assumed 12V. if its different then the top of the relay contact can be removed from the +12V and the bottom of the electromagnet removed from the 0V and they can be put across the separate power supply for the electromagnet

Dave

[Biasless]

Thanks for all your help :)

i'll start reading up on understanding circuit diagrams