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Sci.Electronics.Basics
Sci.Electronics.Basics is a worldwide Usenet news group for discussion of electronics where there is no such thing as a stupid question. Beginners questions. Discussion of electronics education. Requests for other sources of information.

There are 3839 threads in our archives.
You are currently looking at page 1 of 256.
The threads with the newest additions are listed first.




Surge / Ground / Lightning [212 articles]
NB - 21:27 11-05-08
Who is W_TOM and why has he appeared in every single thread that has contained those keywords since 2001??? ... Read More
alarm switch [5 articles]
steve - 17:52 11-05-08
I require alarm systems for both personal and house. From seeing various alarm projects, there is no detail about how the alarm is set off. For example, a house alarm co... Read More
Driving two transistors with same signal [22 articles]
vic - 16:14 11-05-08
Hi, I have two common anode 7-segments displays, and only one wire to drive them. I need to achieve the following : when the control signal is +5V, display1 is ON and displa... Read More
Easy Question - I Hope [2 articles]
PinkFloyd43 - 15:33 11-05-08
First finally dropped the $$ on the big screen and as I live in TX, which typically has huge thunderstorms this time of year, when at home I unplug everything I value. I want to ... Read More
7-segment display problem [2 articles]
14:05 11-05-08
Hi all. I'm just starting out trying to get my head round this electronics thing and am building a few simple circuits that I find on the Internet. I got a 7-segment display (c... Read More
Looking for a... [2 articles]
steamer - 13:20 11-05-08
--Have googled my brains out and can't seem to find what I'm looking for, which is more of a nifty threaded LED panel mount with solderable lugs on the bottom. I've used them as... Read More
Walkie talkie operation [2 articles]
Cass Lewart - 10:35 11-05-08
I have an inexpensive walkie talkie (under $50/pair). It receives FRB in 400 MHz and weather stations in 160 MHz region. It is both sensitive and selective. I can not find any ... Read More
Optimum RC values for crystal oscillator? [4 articles]
Bill Bowden - 08:51 11-05-08
I made a low frequency crystal oscillator using a couple CMOS inverters (CD4069) and a very old 31.5KHz crystal. It's a fairly large crystal package that measures about 3/4 by 3/... Read More
Garage Door Alert [5 articles]
08:38 11-05-08
A friend of ours bought a garage door sensor that has two LEDs and a beeper that goes off when the door is first opened. An electrician installed it in about 2 hours so he doesn... Read More
Video questions about spatial-aliasing, Hz measurements, and analog vs. digital [7 articles]
Green Xenon [Radium] - 08:23 11-05-08
Hi: Some video websites say that spatial aliasing causes jaggies, other say it causes the Moire effect, still others say it causes pixelation. Who is right? What does spatial ... Read More
digikey components [5 articles]
lerameur - 06:46 11-05-08
hello guys, I usually find the parts I am looking for on digikey web site. I have not order from there for a long time. But have they decrease selectivity of products. I was l... Read More
High voltage to power electric cars. [8 articles]
sinebar@bellsouth.net - 22:12 10-05-08
Please bear in mind that I am not an electrical engineer so my knowlege is somewhat limited. Now my question. I presume that storing high voltage at low current is more efficien... Read More
Electric home heat system? [3 articles]
Butter - 21:15 10-05-08
A guy I work with kept complaining that his breakers were tripping. I went over and put an amp meter each of the two circuits providing power to his electric heat in his house. ... Read More
Tips? [3 articles]
Boswell - 20:31 10-05-08
I have plans to assmble a SIMPLE Date-'clock' Basic parts being; CLOCK CHIP, DISPLAY DRVR, LED, LIGHT-CONVER. (power source). Any reccommendations or Tips,... Read More
does Cyrus amp need a load? [5 articles]
tempus fugit - 17:53 10-05-08
Hey all; My brother has a Cyrus amp that he would like to use a wireless headphone set with. Trouble is, there's no headphone jack, so I was going to rig something up where he... Read More
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