Can I use BIG voltage regulator?

[reincarnate]

I got all my parts from Reichelt and I have two very large power regulators.  Perhaps I ordered wrong, perhaps they substitued, but they are sure not going to get their legs in those tiny holes on the board.

They are designated UA7805KC, and have large round bodies, approximately the size of a 50cent (European!) piece.  On the side nearest the legs there is a flat plate with screw holes.  I was going to pop down to my local shop to get the parts that fit, but I was wondering, does anyone know If I can use them?  They only have two legs, but I thought perhaps the body also acts as one of the connectors since both legs are insulated from it.  If I can use them, I really don't think I'll need a heatsink, although perhaps a bigger box!  ;)

Bye the way, gotta tell you all because I'm really happy - I built my first JDM last night.  Programmed my first PIC today...then hit out with core and two LTC modules.....core waiting on voltage regulator, LTCs require me to sleep before finishing.  Got pics of the core and LTCs throughout the build, so going to write a tutorial when done.  Must say, I've got a tiny amount of soldering experience, but the boards are brilliantly designed, as are the board diagrams and pics so far on the site.  If anyone is wondering whether they are up to this or not, I say, GO FOR IT!!!!

;D ;D ;D ;D ;D ;D

Steve

[smashtv]

Heya SW!

Sounds like you have a TO-3 package regulator:

You can use it, and it has way more current capacity, but it would be way easier to get the right package style (TO-220).  You are correct about the case, it can be considered a third pin when compared to a TO-220 regulator.  A datasheet can be found at: http://www.national.com/pf/LM/LM7805C.html

Have fun!

SmashTV

[reincarnate]

Hey Smash,

You're exactly right about the package.  Now I've had some sleep, I'm thinking a little more straight. I'll get the right package and save the TO-3 package in case I ever want to build a MidiBox-Kettle  ;)

Thanks for your help!

Steve