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Join in on this Discussion and see the pictures. Click here-> : Ask an electrical engineer


theloudroom
08-02-2005, 06:16 PM
With the rash of "ask an XXX" threads a while ago I figured I may as well follow up with one that might actually be useful to someone :)

Don't ask me for a crazy amount of effort, but maybe I can answer a few quick questions.

Alex-7
08-04-2005, 06:32 PM
How I tell if my gurl cheatn' on me?

turboSE
08-04-2005, 06:46 PM
How I tell if my gurl cheatn' on me?
:rofl: :rofl: :rofl:

turboSE
08-05-2005, 04:00 AM
ok here's a serious question.......
how do You calculate a transformer? choke/iron/ferrite/air,ETC
i'm talking about the turns?
4 example If i have this oscillating/oscillator circuit that put out about 35-40 VAC and want to Increase that to like 3000Volts to power some gas tubes....
I forgot how to calculate how many turns and shit .I have to put on the secondary or primary coil......too lazy to look it up :rolleyes:
BTW i'm using a ferrite core w/ a 555 I/C circuit and a MOSFET to power the primary coil.....

theloudroom
08-05-2005, 07:03 AM
http://www.tpub.com/neets/book2/5g.htm

turboSE
08-05-2005, 05:15 PM
thanks!

nathantheman
08-25-2005, 10:23 AM
if my light switch is not working, but hot wiring the plug that connects to the switch makes them come on, than it must be a faulty switch? or could it be something i'm overlooking?

turboSE
08-27-2005, 06:02 PM
^^^yeah bad switch....also check the wiring or bulbs/sockets something could be shorting out,sometimes the wiring being to old and used develops more resistance increasing the current in the switch/circuit

theloudroom
08-31-2005, 11:54 PM
If you're talking about a house wall switch, they're like $1. Replace it, better to be safe than risk a fire. I have seen a worn out switch throw sparks.

The other likely option would be the connection to the switch. Corroded, hooked up wrong, etc.

(Obviously, make sure the power is off before replacing the switch.)

King
09-01-2005, 08:13 PM
Paying extra for gold wires/connectors?

Is it true that gold isn't as good of a conductor as the regular ones, that it just doesn't corrode?

theloudroom
09-02-2005, 05:10 PM
Paying extra for gold wires/connectors?

Is it true that gold isn't as good of a conductor as the regular ones, that it just doesn't corrode?

Kinda.... gold isn't really signifiacntly less conductive.

Gold is actually a pretty good conductor
Here's a nice table of metals sorted from best to worst.
http://www.eddy-current.com/condres.htm

Of course, the thing about gold is that it doesn't oxidize like copper.
"Gold" connectors usualy have only a very thin plating (tens of micrometers) of gold over the surface,

Everything above gold on that chart tarnishes or oxidzes. Not necessarily a big problem on the surface of a solid conductor, but at connection points it's an issue.

hemanth4101985
02-21-2009, 06:11 AM
what is instantaneous power?

hemanth4101985
02-21-2009, 06:14 AM
i will be glad to meet a person with full of technical knowledge,who can answer all my questions

$100T2
02-21-2009, 08:05 AM
I will be glad to see a newb who can see this thread is almost 4 years old.

hemanth4101985
02-21-2009, 09:02 AM
p'don me i was checking

Tofuball
02-21-2009, 09:57 AM
Only four years old? We can put this one back on to stew a bit longer.

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