⏚ Electrical Engineering

  1. Home
  2. ⏚ Electrical Engineering
6741 Threads Posts
to

Worth reading in ⏚ Electrical Engineering

Condenser fan motor substitute

I have a very old carrier condenser. I need a replacement fan motor. The current motor is a 5kcp39bg GE unit with the f...
1 comments posted 11yrs
posted by stryped1
1 comments posted 11yrs posted by stryped1

Automatic cutoff for cheap 12v battery charger

I've been given a 12v battery charger that doesn't have a cutoff on the boost mode, so there is a risk of boiling the b...
2 comments posted 11yrs
posted by AussieBarry
2 comments posted 11yrs posted by AussieBarry

Is USB polarity important?

USB uses differential signaling, D- and D+ signal lines. Since it?s differential, is absolute polarity important? If, f...
8 comments posted 11yrs
posted by not
8 comments posted 11yrs posted by not

Driving optocouplers

http://pdf.datasheetcatalog.com/datasheet/vishay/83725.pdf The output transistor of the 4N25 optocoupler is spec?d at m...
7 comments posted 11yrs
posted by not
7 comments posted 11yrs posted by not

Diode Usage In Small dc Motor: Why ?

Hi Folks, I'm not an EE, so would really appreciate someone educating me a bit on this. Trying to fix kids toy. Very si...
2 comments posted 11yrs
posted by rgsros
2 comments posted 11yrs posted by rgsros

Grounding at service entrance

Hello, all. As an EE what should be a simple electrical circuit/networks question has me puzzled as to the rationale, a...
18 comments posted 11yrs
posted by arl_123234
18 comments posted 11yrs posted by arl_123234

DIN rails and diodes

I am building an industrial sensor system for warehouse and need to isolate some inputs using blocking diodes (simple r...
6 comments posted 11yrs
posted by not
6 comments posted 11yrs posted by not

Moisture in Magnesium Oxide insulator

Hi All I work with electric heaters and have a problem with moisture getting into the element, causing the insulation r...
4 comments posted 11yrs
posted by tannersgreen
4 comments posted 11yrs posted by tannersgreen

Low voltage switch wiring question

Hi, cabinets. I have a toggle switch that I would like to install between the low voltage line and the lights. Should I...
5 comments posted 11yrs
posted by nospam
5 comments posted 11yrs posted by nospam

PSCAD Script.

Hi All !! Some one can suggest how to modify the short script of Permanent Magnet Machine to get 6 phase instead of the...
0 comments posted 11yrs
posted by Enrique
0 comments posted 11yrs posted by Enrique

CMOS logic

By combining P channel and N channel MOSFET transistor, whole new digital technology, CMOS technology is obtained. Read...
0 comments posted 11yrs
posted by pchung705
0 comments posted 11yrs posted by pchung705

Ground rod driving. Water method?

I asked on the alt.home.repair group about driving ground rods. The respondees so far have suggested pouring water in a...
7 comments posted 11yrs
posted by dh0496
7 comments posted 11yrs posted by dh0496