⏚ Electrical Engineering

Powersave Posts

The Powersave posts remind me of something that happened at my previous employer about a decade ago. This guy contacted...

6 comments posted 18yrs

posted by pipesandtobacco

6 comments posted 18yrs posted by pipesandtobacco

Complete Bollox? Or...Was: what makes it a balun????

>> Hi peeps. In the last hf ssb competition a group of us put up some >> antennas and a 2e0 took a length of wire, wrap...

9 comments posted 18yrs

posted by me

9 comments posted 18yrs posted by me

50hz appliance on a 60hz power supply

Can i use a 220volt- 50hz clock radio on a 220volts- 60hz power supply output??? What will happen if i try to use it on...

0 comments posted 18yrs

posted by wilsonchuaty

0 comments posted 18yrs posted by wilsonchuaty

Inverter or laptop power adapter?

A friend lives on a boat with 12V power when he is not at the dock. He needs to run his laptop (dell inspiron) while ou...

38 comments posted 18yrs

posted by no_one

38 comments posted 18yrs posted by no_one

Checking NiMH cells?

Some NiMH cells in blood pressure testers seemed to fail, I measured voltage. That seemed to be OK. After recharging, I...

2 comments posted 18yrs

posted by salmonegg

2 comments posted 18yrs posted by salmonegg

R/V tip out motors burning up

These motors are 12 vdc and are not thermally protected and do not have disconnects that I can find. I asked two repair...

1 comments posted 18yrs

posted by electrician

1 comments posted 18yrs posted by electrician

average volts to dc

I need a circuit to take in a PWM signal (Vin) and output the average voltage (Vo = D*Vin). Any ideas?

4 comments posted 18yrs

posted by wthai1

4 comments posted 18yrs posted by wthai1

ANN: A wiki site to organize CFP on Electrical Engineering

Hi All, I would like to recommend a new web site, www.wikicfp.com, which could help you to organize and share "Calls fo...

0 comments posted 18yrs

posted by wikiCFP

0 comments posted 18yrs posted by wikiCFP

Portable/adjustable GFCI/AFCI availability?

My experience, and what I hear from others, GFCI's are not very useful for submersible pumps in hydroponic greenhouses....

7 comments posted 18yrs

posted by salmonegg

7 comments posted 18yrs posted by salmonegg

TRIAC Gate Driver

All, I have a question regarding the zero-cross TRIAC driver by Sharp, part number: PC3SH21YFZBF Will the TRIAC driver...

0 comments posted 18yrs

posted by robnstef

0 comments posted 18yrs posted by robnstef

Distribtuion network design assignment

I'm working on a university assignment where I have to calculate a few things for an 11kV distribution network. The fir...

1 comments posted 18yrs

posted by wthai1

1 comments posted 18yrs posted by wthai1

Questions about pull-up/pull-down resistors

Greetings group, First-time poster and EE by education, but often has a lot of questions, like this one concerning pull...

8 comments posted 18yrs

posted by Zerex71

8 comments posted 18yrs posted by Zerex71

Dept of Homeland Security funds may be available for enforcing Article 708 of the 2008 NEC

The 2008 NEC contains a new article 708 addressing the requirements critical operation power systems. This article is a...

0 comments posted 18yrs

posted by electrician

0 comments posted 18yrs posted by electrician

Combination AFCI/GFCI Circuit Breakers?

I have just attended the Northwest IAEI Section meeting in Anchorage Alaska where the 2008 NEC and Analysis of Changes...

24 comments posted 18yrs

posted by electrician

24 comments posted 18yrs posted by electrician

[Last Gas Station] Newsworthy New Energy Items

Hey everyone, I have some nice news for you. I am in the process of producing my first interview for The Last Gas Stati...

0 comments posted 18yrs

posted by attendant

0 comments posted 18yrs posted by attendant