Electronics Forum / Electronics / December 2004

http://computerchristmas.com/index.phtml?link=how_to&HowToId=25&LowLimit=0
This system describes using either an SSR or MOSFET to drive a light circuit
.. What kind of MOSFET would I use? Would it be cheaper than building an
SSR?

I am looking for some coax cable with outer diameter about 1.2mm (or
0.05"). It very thin and flexible. I looked at all the obvious places
(Radio Shack, Newark, Mouser, Digikey) but could not find this. I know they
exist because I have some. They don't have to be super high ...

I've got an aquarium air pump on the pond to keep a hole open in the ice.
This prevents the potential build up of toxic gasses that might kill the
fish. However, aquarium pumps don't like the cold, it stiffens the
diaphragm. If it gets cold enough (likely), the diaphragm will crack.

For Sale (Pick up - Adelaide Only)
1x    UV light box for making printed circuit boards
    complete with 4x 15W UV tubes in good working order
    0 to 5 Min Timer, on/off switch and neon

I require an s-vhs splitter cable or adapter.
I need to run an s-vhs signal to two devices.  I can't seem to find these in
the Jaycar or Altronics catalogue.
Can anyone help me with where I could obtain these?

if you have a look to a modern brushless controller for radio
controlled flying models you can see
- that the motor has a very short startup time until the right moving
(about 100-200ms)

Seems you can't download a bios upgrade anymore unless you pay more
than an old board is worth or am I missing something?
Al
I don't take sides. It's more fun to insult everyone.

I am doing copy of my old films in VHS for DVD, meantime
I am not getting to copy them for DVD and only for the format VCD.
I am asking for help to do that. I would like somebody to find out as
to do that. My films are captured in the format MPEG-2.

We have a small decorative plastic Christmas tree with fiber optic
lights.  It uses a halogen light bulb, which fits in a 2-prong socket
called "MR11" and is 12V 10W.  The light no longer works and we want
to replace it.  Where can we find a 12V 10W MR11 halogen light bulb?

Just a simple question.
I know RJ11 has 4 pins. For 6 pins version, is it still called RJ11? I
know 8 pins version is called RJ45.
Thanks!

Greetings all.
Assume for a moment that I have no knowledge of electronics (not true,
but I only know what I've picked up and that's rather patchy). I'm
looking to make a little addon for my PC and I need a little help. I'm

Cossor display tube from a model 1049 mk 3 CRO (type89J1)
any one want it???  heater tests ok, otherwise ???
yours for the cost of postage or it goes in the bin
Greg H

I have to replace a zener diode (D7) in a Kenwood KA-1500 PA.
With the help of a magnifying glass I found the number:
1875R ("75R" is about half the size of "18")
Does anyone of you know the zener voltage of this diode?

I am trying to build something for my deaf brother.  I want to hookup an
amplified audio signal to a small 1.5v - 6v DC motor.  It needs to be
able to speed up when the sound is louder, slow down when there is less
sound and stop if no sound.  It needs some type of regulator or