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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 4626 threads in our archives.
You are looking at page 18 of 463.
The threads with the newest articles are listed first.
switching regulator with mcu [52 articles]
michael nikolaou - 2009-11-03 00:26:00
Hi to newsgroup
I'm making a mcu based device which i want to be very small and low cost
The design consumes 100..120 ma @ 3.3V
The problem is the installation that requires 12 or 24 volts to ope...
EMI prevention / protection? [22 articles]
dave.harper - 2009-11-02 22:58:00
I'm using a wein bridge oscillator as an audio tone generator in a
radio modem (~2kHz). Ironically, when the transmitter is turned on,
RF from the transmitter (~144MHz) causes the oscillations to d...Microwave oven transformers [8 articles]
terryS - 2009-11-01 20:10:00
Just scrapped another m.wave. Wasn't operating properly, was old, the
display was faulty and what was showing was meaningless. Also
sometimes it had started to microwave for no reason at all when th...Calculating Capacitance [3 articles]
mat86 - 2009-10-29 21:53:00
Hello
I need to create a capacitive sensor with two sensing probes. How do i
calculate the capacitance needed for my sensing???
Thanks
...Electricity in Europe [6 articles]
trickyrick - 2009-10-29 21:47:00
Was in Portugal last year with a 50 watt converter. Didn't work worth
beans. Any chance I can buy a plug when Im over there and a small
clamp then only use one side of there 220 and the other side...I don't see this working-FM TX [5 articles]
amdx - 2009-10-25 21:57:00
Does this look like it has any chance of working, and if not
what is it supposed to be?
http://broadcasthardware.blogspot.com/2008/05/small-fm-transmitter-with-loop-antenna.html
...Simple circuit to convert Bi-polar Square wave to Unipolar [9 articles]
rylmp2k1 - 2009-10-25 03:40:00
Hi everyone.
I want to convert my square wave signal generator to produce only a
positive going waveform without just chopping off the -ve signal.
The signal generator has variable output from ...Why do we use PWM control? [4 articles]
Gundal21 - 2009-10-24 18:19:00
I always feel thanks to all of the group members.
Today I'd like to ask some basic question (the group title is basic).
As is shown in the title, I don't exactly know why we use the PWM.
I think ...What is a unbalanced AC transformer? [5 articles]
Uriah - 2009-10-23 20:10:00
I need to provide a 10VAC power supply to a cirris cable tester and
they said it was unbalanced. It is a three pin input with the center
being neutral and each side is hot 10VAC but it is unbalanced...Minimum Energy Required for A Measurement [5 articles]
Bret Cahill - 2009-10-23 07:58:00
As with anything involving information or communication there is a
minimum amount of energy required for any measurement at a given
precision.
There may be several "minimums" depending on how ide...