Electronics Forum / Electronics / July 2006

On my old comp this worked well but under the new regime it is extremely
slow. I think grass grows quicker. Does anyone else have this problem? Is
there a fix? Also had to drag out the old HP laserjet as new one not
supported.

Hi there, not sure if this is the right NG, I have a Q in regards to
computer electronics :-)
I am trying to put together a manual USB 2.0 switch, one output to four
inputs (or viceversa). I use:

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NEW PAYPAL LETTER POSTED 1st June 2006
F.Y.I, it is a pain in the butt listing this letter in over 50
forums, but the monotony pays off. For a $5.00 investment who could

Green light has a wavelength of about 510 nm. Is it possible to
generate green light using an AC electric current that has frequency
high enough to have a wavelength of 510 nm? Has this ever been done
before?

 I've been out of the TV market for several years and its about time for an
upgrade.  I'm looking for a TV that comes with outputs that would plug into
a surround sound system.  I don't know much about the various connections
available now. Do they normally use RCA type plugs, ...

Just bought some Fairway cool white 20W Compact Fluoro bulbs
from Bunnings and unlike the old ones they replaced they emit a
dull flash every minute or so after they are switched off. Is
this normal?  They 're in the kids bedroom and they didn't

Hello, I want to build a circuit with trimmers to reduce the color
saturation of a signal going to a monitor. The signal is made up of
these wires: R, G, B, Sync, GND.
Do I need some IC? Are there any schematics to look at?

Hey if you have any old scrap circuit boards laying around don't throw them away!  Grab a sodlering iron, heat up the pads, and start pulling parts off.  Accumulate them in boxes and sell them on eBay!  I do this and plenty of people buy the stuff because it's cheaper for them ...

I was taking apart a T.V. and found what looks like a barber pole / bumble bee with wires coming out of it.  It was alternating black and y6ellow in a spiral.  Anyone know what this is?
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Actual size held up to 19" monitor

n00b questions: 1) what exactly is a bipolar power supply? 2) why are
they used? 3) can i use a PC power supply to power an amp that needs a
bipolar power supply?

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My buddy dropped his ReplayTV off at my place the other day for me to
take a look at.  It turns out that one of the power supply output pins
had a blown transistor attached to it.  After further inspection, I saw
the middle leg (Base or Gate, couldn't tell what kind of transistor it

I just bought the Jaycar Sound Level Meter Kit (kj8212) and when I got home
and read the pakage realised that I also need the instructions. There are no
markings on the circuit board and was wondering whether anyone has the
circuit diagram to save me the trip into town to buy the ...

I don't care what the rest of the world thinks, I still call them condensers because that's what they do.  They CONDENSE electronics, they don't capacit them

I broke a picture tube at the end and it sounded like air was being sucked out.  I foolishly did this in the basement.  Now what?  Did some kind of gas escape and go into the house?  I vented out the place all day.  What was the noise caused by?  It was like a really loud whoosh ...