⏚ Electrical Engineering

Mains 3-phase wiring question

In a print shop, the service entrance equipment has three 125A breakers. These feed three 120/208 breaker panels. There...

16 comments posted 14yrs

posted by mcham

16 comments posted 14yrs posted by mcham

cost of charging

I have an LG Optimus, and I want to compute the cost of charging it. I have a charger that uses 2 amperes of current. I...

12 comments posted 14yrs

posted by bob

12 comments posted 14yrs posted by bob

Plasma Speaker - Prototype

Plasma Speaker - Prototype http://www.metacafe.com/watch/1963063/plasma_speaker_early_prototype/ .

1 comments posted 14yrs

posted by TortureTechnologyNResearch

1 comments posted 14yrs posted by TortureTechnologyNResearch

outdoor lights

I have two outdoor lights, both of which are burned out. My roommate told me to replace them. They both have 100watt bu...

2 comments posted 14yrs

posted by bob

2 comments posted 14yrs posted by bob

Simple tone control?

I'd like to add a simple op amp-based tone control circuit to my preamp for desktop speakers & sub that I'm modifying f...

23 comments posted 14yrs

posted by invalid

23 comments posted 14yrs posted by invalid

Call for Papers (CFP)- Submit Paper

========================================================= ARPN Journal of Science and Technology Call for Papers (Vol....

2 comments posted 14yrs

posted by managing.editor.arpn

2 comments posted 14yrs posted by managing.editor.arpn

electrical projects and lots more

You may found lots of electrical project at the following link http://forum.techshristi.com/viewtopic.php?f=11&t=347&si...

0 comments posted 14yrs

posted by kaustubh1040

0 comments posted 14yrs posted by kaustubh1040

Insulated Rubber Backing

I need a rubber backing material for some low voltage electrical contacts because there has to be a slight give when th...

4 comments posted 14yrs

posted by Searcher7

4 comments posted 14yrs posted by Searcher7

Looking for pins for "daughter" board standoff

Looking for a source of pins to connect 2 PCBs. An obsolete relay needs to be replaced with a modern one with different...

10 comments posted 14yrs

posted by invalid

10 comments posted 14yrs posted by invalid

electricity cost

Anyone know how I can figure out the most likely cost per kilowatt hour of residential electricity in Dallas, TX?

3 comments posted 14yrs

posted by bob

3 comments posted 14yrs posted by bob

meter/surge protector

Is there some kind of surge protector I can buy that tells me how many kWh I'm using?

5 comments posted 14yrs

posted by bob

5 comments posted 14yrs posted by bob

Mixing 4 audio channels to 3?

I want to connect the audio out (headphone jack) of 2 computer sound cards to a desktop & woofer speaker-amp combinatio...

90 comments posted 14yrs

posted by invalid

90 comments posted 14yrs posted by invalid

Call for Papers (CFP)

========================================================= Journal of Emerging Trends in Computing and Information Scien...

0 comments posted 14yrs

posted by saeedullah

0 comments posted 14yrs posted by saeedullah

White LED spectrum?

Would like to find white SMD LEDs suitable for use as backlight for LCD monitors where the CCFL lamps have burned out....

11 comments posted 14yrs

posted by pconners98

11 comments posted 14yrs posted by pconners98

Hacking audio amplifier

A set of Harman Kardon Soundsticks are obsolete with most modern computers. They originally took digital audio via USB...

3 comments posted 14yrs

posted by invalid

3 comments posted 14yrs posted by invalid