⏚ Electrical Engineering

Quartz bulb: Galss glows blue after turning off.

Hi Folks, This may not be the right place but it looks the best... I have a torch which uses a 130W rally bulb (12V car...

0 comments posted 17yrs

posted by crispin.proctor

0 comments posted 17yrs posted by crispin.proctor

Control Systems

Everyone know that Transfer function of a system is,"the Laplace transform of Output to Input under zero initial conditi...

0 comments posted 17yrs

posted by hari270289

0 comments posted 17yrs posted by hari270289

Electric Current

In my class lecture, my professor mentioned that "the ac supply frequency is 50Hz.So the time period is 20ms.The curren...

12 comments posted 17yrs

posted by hari270289

12 comments posted 17yrs posted by hari270289

INSULATING VARNISH

We have applied an E class varnish to motor windings by mistake of the technicians ivolved. The motor application requi...

0 comments posted 17yrs

posted by nasirtaxila

0 comments posted 17yrs posted by nasirtaxila

How to prevent supply to the welding transformer when not in use?

I have a problem that needs to be solved.I need to prevent supply to the primary winding of a welding transformer which...

4 comments posted 17yrs

posted by meetgayu89

4 comments posted 17yrs posted by meetgayu89

Re: 150 year

> > I don't know about the US, but in Sweden, the frequency of the A/C mains, are > guaranteed to be exactly 50 Hz. If...

9 comments posted 17yrs

posted by koehler

9 comments posted 17yrs posted by koehler

20 amp 2 pole breaker powering washing machine and kitchen outlets

I have a 2 pole 20 amp breaker that I though went straight to my washing machine in the garage, but upon tripping it I...

3 comments posted 17yrs

posted by Travis.Kaiser

3 comments posted 17yrs posted by Travis.Kaiser

Why use Fourier to find a system response to a ramp function?

I remember seeing an example where a system response was found given a differential equation as a transfer function. Fo...

12 comments posted 17yrs

posted by davidd31415

12 comments posted 17yrs posted by davidd31415

Union Electrician Apprentice Qualifications?

In todays paper there was an advertisment in the help wanteds, the IBEW local is accepting applications for indoor wire...

9 comments posted 17yrs

posted by regor

9 comments posted 17yrs posted by regor

Open delta transformer - Z calculation

I'm after some advice regarding a transformer impedance calculation I need to produce for a design in the near future;...

37 comments posted 17yrs

posted by jaymack12

37 comments posted 17yrs posted by jaymack12

Spa Circulation Pump installing a higher wattage pump

Hello, I have to replace my circulation pump in my hot tum that is 115v 33watts. I see many that are 115v 98watt for ch...

1 comments posted 17yrs

posted by Travis.Kaiser

1 comments posted 17yrs posted by Travis.Kaiser

Flame sensor

I'm designing a burner control for my beer home brew system. I use a plc to control the pumping and will use it for fla...

8 comments posted 17yrs

posted by djdieterle

8 comments posted 17yrs posted by djdieterle

GFCI circuit for 110v 20 amp hot tub question

Hello, I just picked up a used Hot Springs spa that is 110v 20amp. It has had the original GFCI plug cut off and replac...

1 comments posted 17yrs

posted by Travis.Kaiser

1 comments posted 17yrs posted by Travis.Kaiser

Wire terminal cap: square millimeters rating

Hi all, wire terminal caps with one entry and one screw, for electrical wire junction (whose English exact name I don't...

0 comments posted 17yrs

posted by qmu

0 comments posted 17yrs posted by qmu

Federal Pacific Panels

My question is not one of reliability or liability, but to ask whether a 240V-50A stab lok breaker used in a 100A panel...

0 comments posted 17yrs

posted by katamasouth

0 comments posted 17yrs posted by katamasouth