13 Jun
2006
13 Jun
'06
12:53 a.m.
On 6/12/2006 at 3:51 PM Chris M wrote:
I think this response is for me. The reason I was
going to shlep to RS and buy the parts was cuz I've
never really done it, and I have other needs for
24vdc. Yep, those surplus bricks might fulfill all my
deepest desires...but I guess it's cuz I've never
really done it ;).
Well, okay, yes, I suppose you could build a nice analog 24VDC supply from
RS parts.
Let's see:
Catalog #: 273-1512 25.2vct 2 amp transformer $10.49
Catalog #: 276-1146 4A, 50 PIV bridge rectifier $1.49
Catalog #: 272-1048 2200 uF 50 WVDC capacitor $4.29
At this point, options get tough, depending on the current you'll need.
But let's go with
Catalog #: 276-1778 LM317T adjustable voltage regulator $2.29
You could also build your own regulator for higher current using the 2N3055
power transistor, a zener and a handful of resistors.
Add to this, a line cord, switch fuse, connectors (if needed0 heatsink and
enclosure.
I suppose that it might be fun to see what useful thing that could be built
using components from the local RS; but you're not going to save any money
there!
Cheers,
Chuck