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Science project ideas [7 articles]
10:50 16-03-08
My son wants to enter the 4th grade science fair and wants to do
something with electronics. As with most science fairs, the primary
point is to "solve a problem" or prove a theo... Read More
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Furnace Electronic Air Cleaner [2 articles]
Tom - 02:09 16-03-08
I have an electronic air cleaner on my furnace circa 1971, that doesn't
work. When you turn it on - nothing happens.
I have an elementary knowledge of electronics (mechanical ... Read More
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Isolation transformer? [4 articles]
Hammy - 22:00 15-03-08
I have a 450VA isolation transformer. The transformer is supplied from
a three prong outlet. I've taken some measurements with my DVM they
show a voltage between lines to ground ... Read More
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Is this legal? [34 articles]
Hammy - 21:47 15-03-08
This is a pic from an app-note from Microchip.
http://i29.tinypic.com/5b193d.png
They are using a fuse between the neutral line and earth (safety)
ground. Among other things... Read More
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LED Circuit? [2 articles]
Drew - 20:51 14-03-08
I'm trying to apply a tally light system: a Panasonic video switcher
that sends a signal, and I want a couple of LEDs to turn on 150ft.
away whenever that signal is on. That's it... Read More
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Panasonic Cordless Phone [3 articles]
Richi - 13:54 14-03-08
Panasonic Digital Gigarange Cordless Phone Model No: KX-TG 1895,
Panasonic Dect Twin Cordless Phone Model No: KX-TG 7102,
Panasonic Cordless Phone Model No: KX-TG 3032,
Panasoni... Read More
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understanding car amplifiers and bridging [5 articles]
13:09 14-03-08
If one has a 4-ohm speaker and a car battery that puts out 12.6V, an
amplifier can produce:
P = V^2/R = (12.6V)^2 / 4 = 39.7 W.
If one uses two amplifiers in a bridged confi... Read More
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what enclosure to use ? [4 articles]
Archimedes - 11:00 14-03-08
Hi All
I built a super-regen radio and want to enclose this in a box of some
sort. I have two options -
1. Plastic box
2. Aluminium Box
Now I want to listen to this radi... Read More
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Float switch circuitry without floats? [17 articles]
08:05 14-03-08
I know very little about electronics though I'm fairly handy and have
experimented with some simple circuitry. My objective is to build a
water level sensor for a 10 gal stainle... Read More
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Panasonic Cordless Phone
Richi - 04:11 14-03-08
Panasonic Digital Gigarange Cordless Phone Model No: KX-TG 1895,
Panasonic Dect Twin Cordless Phone Model No: KX-TG 7102,
Panasonic Cordless Phone Model No: KX-TG 3032,
Panasoni... Read More
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YOU TOO can Ma*ke * $15,000. a month!
beatybob@gmail.com - 20:44 13-03-08
YOU TOO can Ma*ke * $15,000. a month!
YOU don't Believe it?
All It requires Is the Proper INVESTING Strategies!
Internet INV*ESTING at It's Finest!
Why BU*Y into Programs... Read More
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