General Electronics

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high reflection coefficient and phase shift

Hi, Can somebody explain, how a high reflection coefficient is related to phase shift? Some of the book I have been rea...
1 comments posted 22yrs
posted by tspjor
1 comments posted 22yrs posted by tspjor

false signals triggering 555 timer

anybody knows something about this? i got a good 7812 power supply with big capacitors and some small mkm , and pin 2 c...
1 comments posted 22yrs
posted by sieneke68x
1 comments posted 22yrs posted by sieneke68x

Infant Mortality battery tester

All, Here is another interesting project, I am to build a infant mortality battery tester. the tester is to be designed...
23 comments posted 22yrs
posted by Jabriol
23 comments posted 22yrs posted by Jabriol

How Does Digital Video Work?

We learned in skule how a TV set works: a flying beam rasters down the screen, energizing phosphors on the back of the...
6 comments posted 22yrs
posted by EnviroLED
6 comments posted 22yrs posted by EnviroLED

Re: R-DAS I2C Bus

Bernt-Johan Bergshaven: > *snip* ...these modules use an I2C bus.... > ------ the bus is promoted by Philips Semiconduct...
9 comments posted 22yrs
posted by rbf
9 comments posted 22yrs posted by rbf

Radio Electronics Magazine?

Hi all, Does Radio Electronics Magazine still get published? I remember seeing them years ago, but can't find anything...
5 comments posted 22yrs
posted by myronx19
5 comments posted 22yrs posted by myronx19

Optical mouse hacking :)

Hi group, I tried an aqua LED on that cheap Logitech optical rodent, and it worked fine :) Anyone else tried this? (als...
2 comments posted 22yrs
posted by testing_h
2 comments posted 22yrs posted by testing_h

Designing Frequency-Dependent Impedances?

Hi, Every one knows, that e.g. a simple RC-parallel circuit has a frequency-dependent impedance-characteristic (Absolut...
14 comments posted 22yrs
posted by abcdstutzer
14 comments posted 22yrs posted by abcdstutzer

Pionee A-x340 schematics wanted

Im looking for an schematics of a Pioneer A-X340 amplifier If anyone has one or knows where to go i would appreciate it...
2 comments posted 22yrs
posted by ocurull
2 comments posted 22yrs posted by ocurull

interfacing PS/2 voltage levels to CMOS

I would like to interface the inputs of a CMOS microcontroller with a PS/2 signal. What interface circuitry should I pu...
8 comments posted 22yrs
posted by cserl
8 comments posted 22yrs posted by cserl

Update (was :- Mystery Motors - help required)

Hi there all. Re. the Copal motors extracted from those old Compaq 15/30 DLT drives, part number LBT79-002 and possibly...
0 comments posted 22yrs
posted by testing_h
0 comments posted 22yrs posted by testing_h

10 technologies that refuse to die

http://www.msnbc.msn.com/id/4147164/ and skip down to the reel-to-reel tape part. -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@...
72 comments posted 22yrs
posted by NOSPAM
72 comments posted 22yrs posted by NOSPAM