How can I power my breadboard setup with a 5Vdc transformer?

[ravenprp]

Hi, I have a simple breadboard setup with an inverter IC, LEDs, etc.

I have a GND/Vcc wire, now I need something that I can send +4.5v through.

mY professor mentioned I can use three 1.5 double A batteries in series, but how would I go about doing this?

What tools do I need?

This is for when I have to test the circuit when I am at home and can't go to the lab.

THx.

 

[berkeman]

Do you have a Radio Shack or other electronics store near you? They will carry some prototyping supplies, including AA battery holders.

If not, Digikey.com has them:

http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter

 

[ravenprp]

can you get me the right link to digikey? it doesn't work :(
i'm not sure what to search

also, radioshack doesn't have the AA battery holders, in series... i need one with 3, so i can supply 4.5v

any other ideas?

 

[ravenprp]

also, would the battery holder be in "series" or one that is in 'parallel' or does it not matter

 

[chroot]

They must be in series. If the batteries were in parallel, you'd only get 1.5V out of them (though you'd have a higher current capability).

- Warren

 

[Integral]

Perhaps you should abandon the electronic project and work on some fundamental circuit projects. You need to understand DC circuits before you can comprehend the electronics. I think you are getting ahead of yourself if you do not know how to connect 2 batteries in series. Find a project book on simple DC circuits and work your way through that, then tackle an electronics project.

 

[berkeman]

any other ideas?

How about just getting a 5Vdc wall transformer and a mating connector? You can get those lots of places.