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Sci.Electronics.Basics
Sci.Electronics.Basics is a worldwide Usenet news group that is used to discuss basic electronics questions.
There are 4621 threads in our archives.
You are looking at page 4 of 463.
The threads with the newest articles are listed first.
neg ldo problems [3 articles]
Hammy - 2010-02-25 10:45:00
I'm guessing I'm missing the obvious here. I'm trying to build a
discrete negative LDO using a NFET for the pass element. I'm basing it
on the internal structure of the UCC284-5 seen here.
ht...
Not Quite Everything for a Theory of Everything [9 articles]
fitz - 2010-02-24 21:59:00
Not Quite Everything for a Theory of Everything
(click link)
http://www.amperefitz.com/not.quite.everything.for.a.theory.of.everything.htm
Enjoy,
Fitz
...Flyback poor regulation [3 articles]
Hammy - 2010-02-24 20:57:00
I built a 10W multi-output flyback all of my outputs are reasonable
except one my -12V output, it varies widely over line and load from
-12.5V full load to -18.7 no load.
I've been tinkering in s...PCB toner transfer etchants [15 articles]
Darren Brumfield - 2010-02-23 08:33:00
I've been reading up on this and the consensus is that ferric chloride is
the most common compound to do the actual "etching". Is there some sort
of more widely available chemical that will get...What for the "D" in a PID control loop? [14 articles]
George Herold - 2010-02-22 21:29:00
I=92ve built several PID control loops, mostly for temperature control,
but sometimes for other things. I=92ve always used the all three PID
parameters. I use to think that the D term was there...45-degree diagonal cutters? [110 articles]
DaveC - 2010-02-22 20:17:00
I used to own a pair of flush cutters where the jaws and the handles met at
about a 45-degree angle. Made for a nice tool for getting in between
components when you needed to nip something off flu...ckt using LDR [3 articles]
itzneona - 2010-02-22 17:07:00
hi,
I'm planning to work with a simple ckt. Just have only few
ideas about the ckt.
following are the details:
the ckt is meant to be a, heart pulse detecting ckt.
main principle:
f...Transistor question -theory [10 articles]
lerameur - 2010-02-22 15:22:00
Hi,
I have been analyzing the 'how to' of a transistor recently. Electron
flow, holes, dope material etc... I still do not understand why a
transistor can be reversed, anyway reverse based from ...Make It Go Backwards! [5 articles]
Ron Hubbard - 2010-02-21 01:21:00
I was doing some carpentry work in my bedroom with a belt sander and
in one careless moment, I put the tool down on a blanket as the motor
was winding down. Less than 30 seconds later, part of the b...18650 li-ion [2 articles]
F Murtz - 2010-02-20 13:02:00
Could some one explain the protection mechanism on some 18650 li-ion
batteries and why they do not work with some xenon or led torches?
...