6 Jul
2005
6 Jul
'05
1:02 p.m.
From: "Jay West" <jwest at
classiccmp.org>
Joe wrote...
Hi Jay
No, the ripple on a rectified filter will look like a
saw tooth. If you look carefully, you'll see that the leading
edge follows the AC while the trailing has a slight dip.
This is normal.
Dwight
Are you sure that the lights aren't blinking
too fast to see? Perhaps you
can hang a logic probe (with a pulse extender) on one of the lights to be
sure.
I'll try that tomorrow... but I wouldn't think that is what is happening.
Also, pardon my lack of knowledge, but... shouldn't I be seeing the .2v
ripple as an AC component (ie. a sine wave)? It's a very clear perfect
sawtooth. And it's exactly the same on all the 5V regulators, which strikes
me as odd.
Jay