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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 4775 threads in our archives.

You are looking at page 5 of 478.

The threads with the newest articles are listed first.

Voltage required [4 articles]

Roger Dewhurst - 2010-08-04 13:06:00
I have an external hard drive, taken from an older computer, in a Dick Smith external enclosure. During a move I got all the transformers mixed up and now I do not know whether this requires 12 ...Voltage required

Sampling Only When SNR Is Above Some Limit [3 articles]

Bret Cahill - 2010-08-03 21:55:00
In some situations the time periods when noise will be an issue are easy to identify. Instead of subtracting or filtering the noise you use a comparator to simply shut down the noisy signal until t...Sampling Only When SNR Is Above Some Limit

Digital Capacitor 1 Farad [9 articles]

Bill Bowden - 2010-08-03 11:30:00
I bought a digital 1 farad cap (ICBM-7244CRP) at a swap meet for $15 thinking I could sell it on ebay for a $30 or more. I'm not sure how it works since it has a 40 amp relay inside to disconnect...Digital Capacitor 1 Farad

can I run MC1496 (modulator) w/ 80MHz carrier? [2 articles]

1jam - 2010-08-03 04:50:00
Hi, for reference: http://www.onsemi.com/pub_link/Collateral/MC1496-D.PDF Can I run this chip with an 80MHz carrier? I'm trying, but the output is very weak. The datasheet isn't clear to me. t...can I run MC1496 (modulator) w/ 80MHz carrier?

Isopropyl Alcohol for Cleaning Flux [33 articles]

Joe - 2010-08-02 13:08:00
In one of the posts about solder, somebody mentioned CVS Drug Store for 91% isopropyl alcohol. I just called a CVS, it's $2.79 for 16 ounces and $2.99 for 32 ounces. That's 20 cents more for dou...Isopropyl Alcohol for Cleaning Flux

In the basics of ELECTRONICS. [13 articles]

bcon1 - 2010-08-02 04:51:00
How is the RESISTANCES of what a simpled small resistor is, in that the overall dynamics are accompanied by math that is an accurate impulsives as it is in the COORDINATION, of what we are - that ...In the basics of ELECTRONICS.

Portable Oscilloscope [11 articles]

Bret Cahill - 2010-08-01 21:33:00
The markings on the housing of the 120 / 240 v ac Protek P-3502C don't say anything about power consumption, only to use a 1 amp fuse. The web page claims the newer models at least are low power or...Portable Oscilloscope

ltspice model for a kettle element ! [6 articles]

IanM - 2010-08-01 11:35:00
Anyone like to suggest some improvements to my simulation of a relay switching a kettle element? I guessed at all values - the inductor value , no clue what that would be anyway Version 4 ...ltspice model for a kettle element !

Quantiative Science Before Galileo [102 articles]

Bret Cahill - 2010-08-01 00:05:00
> > Or are you a conspiracy theorist who believes 98% of the scientists on > > the planet are in on a conspiracy? > That's about the same percentage who held that the Sun went round the > E...Quantiative Science Before Galileo

Scissors Appear On Plot On LT SPICE [2 articles]

Bret Cahill - 2010-07-31 20:52:00
Does this mean the circuit analysis requires too much computing power? It would be nice to get accurate phase angles and amplitudes as with simple circuits. Bret Cahill ...Scissors Appear On Plot On LT SPICE
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