Electronics Forum / Basics / July 2008

The male and female parts of the connector are used together outdoors.
There's no trouble disconnecting them, but they are both yellowed (rust?),
so the connection seems broken. The male part was easily dealt with by some
emery cloth. The female part has two cylinders, the outer ...

Well, this is sci.electronics.basics, so I have another basic question ;)
I've been looking into buying solar cells, and I see a lot of this sort of
description:
"Square polycrystalline silicon solar cell has an output of .42V to .52V

I made myself a small electromagnet to activate a reed switch using a
6v supply. The problem is that I am pulling 3 amps,  I do not want the
electromagnet to be bigger by making more turns, I believe there are
such electromagnet on the market that can activate a reed switch with

I am attempting to charge a battery and I would like to have a
feedback on the approach.
I have a 18v supply coming from a generator and want to charge a 12v
battery.

I have 4 - 6 volt 58 amp battery's.  Is there any way to wire them in
series, so I can wire loads of 6v 12v and 24v and wire in a 6 volt
trickle charger to charge them all
Thanks

Just how can microwaves be used to cool something? Usually they heat
things up.
http://www.sciencedaily.com/releases/2007/09/070914105600.htm
Thanks,

I have a regen radio that uses one type 30 triode tube with 2.0 volt,
60 mA filament.  The radio had two 33 ohm 1/2 watt resistors wired in
parallel for 16.5 ohms in series to the tube filament to cut down 3
volts from 2 D cells to 2 volts. I removed these resistors so I could

I have a permanent magnet and I just finish building myself a
gaussmeter. However it shows me that every magnet I measure has a
higher gauss level for the south then the north. Do magnet have
different magnetic field strength for south and north pole, ?

When I post solutions on oil and basic necessities for human survival
and you want to discuss sig figs, start another thread.
Bret Cahill

What idiot suggested this?
And _no_ you cannot key word search to identify the moron.
We're on the honor system.
Bret Cahill

I suggest the discussion of how to farm with what tools and what power
source, be moved to alt.agriculture.
There is currently a thread running there about powering a tractor with an
extension cord.

Only visit:
http://hvansari.googlepages.com    or
http://www.geocities.com/hamid_vasigh

Not a newbie, here, I went to electronics school about a decade ago,
and although I've reeducated myself to this point, I seem to be stuck.
Please help, anybody!
I've got a mosfet that I'm using, driving an irf510 with a tc4420 cmos

I'm using Slone's Tab book to learn the basics. It's pretty good so
far although once in a while the book takes bigger leaps so I stumble
a bit.
What I've got so far is the the two 24V transformers with the

Is there ANY attempts being made to cut down on the spam in the channel?
I mean I think it is rediculous that the same few spammers spam on this and
other newsgroups I belong to (namely comp.lang.python). If a moderator is
needed I would more that gladly become a moderator.