Electronics Forum / Electronics / November 2004

Need some advice..
I am designing a small feed system for lumber grading.
This feed system is part of a lumber grading system.
There is a motor drive feeding the individual boards along a

BC183 NPN taking base input from a 5v IC output (through a resistor,
assuming 10K for now) but need it to switch on a 12v 500 ohm relay.
According to the spec sheet all voltage/pin differences are within tolerance
and the collector-emitter current will be around 20mA (BC183 can ...

I am after the Date of the Issue of the Elektor Mag that had a article on the
TV/VGA  Pattern generator, I should have the Mag myself, but some of them have
been filed away, and I and still trying to find away.
This was a up market one that has a Full test pattern with a Circle  AND ...

   I've inherited a blown FS 6390 NEC television off the in-laws, I can
tell a few of you will delete now ! If not, I have popped the cover and
traced the power, 240v in and the fuse is ok, found a blown area in the hot
side of the circuit board, but the main problem looks like an ...

Hi, I`m a complete electrics novice and at the moment every thing I
try doesn`t work. Even down to shorting a PC`s Power Supply Unit so
that it`ll work without being connected to the motherboard, which
concists of "simply" grounding the power wire with a paperclip,

Apols for a bit OT but the music groups are non-technical.
I have a 300W bass amplifier which works just fine. The other day I wondered
what the sound would be like if I tried my 6 string (ie "normal") electric
guitar through it. I expected a rather noticable cut-off somewhere ...

      i am thinking of starting a solar powering my room and wsa wondering
does anyone have any interesting urls they have found or information to pass
on
thanks in advance

Does anyone make a trully noise free dimmer switch?
Ron H.
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A friend of mine mentioned that some animals are unable to hear/understand Mono
audio. Is that true? What animals? Then is this reason to make telephones
stereo?

I want to glue or varnish the windings of an air coil. The coil is
made of coated (polyurethan) copper wire.
Which is the best glue or varnish?

Probably a dumb question,... but I'm trying to locate a suitable mains
adapter. Currently battery powers (4 x D Cells) the external power
inlet is marked as 6v, 1.8a. However, all of the regulated PSUs I can
find are < 600ma. does this mean I'm stuck with using batteries?

I recent bought one of these:
http://www.computermarket.com.au/images/PT9988.jpg
http://www.nasa.com.au/products_computerac_ao-pto888.html
http://www.ecomcomputers.com.au/prodDetail.php?ID=434793&catid=

I have a tv modulator, ch0 46MHz Australian channel, and I want to boost its
output with a
simple one transistor amp connected to a short antenna say 30 cm so it will
transmit

Could anyone point me in the direction of a supplier in OZ for these
transistors,MJ11032?
Remove the obvious to reply.
Thanks,Brian Goldsmith.

Just starting to get vertical collapse, and need the manual to sort it out.
Any documentation is appreciated.
Regards,
Brendan