Electronics Forum / Electronics / September 2004

I have a Yamaha B-2 Power Amplifier that has gone on one channel, the V-fet
power devices used in this amplifier are no longer available nor are
equivalents.
So i am looking another B-2 in any physical condition as long as one channel

I have this plotter, a Mural 8000 flatbed from the eighties,
brought 2nd hand froma thrift store (no manuals, cables,
etc.) that has both a D25 (female) and a DB9 (male) port.
After some experimenting I found the correct cable pinouts

I need an easily brewed small quantity of electroplating solution for
silver on copper without going to cyanide based commercial stuff
(this is only for a couple of lumped tuned circuits and I dont have
plated wire) and wondered if anyone had a homebrew recipe!?

I need shematic for power soply 400W
Can yu help me with some link???
On my mail , or grop!?!?
thx!!!

I am a studentof Electronics Engineering, and I have to design a
counter as part of a basketball shot clock. However, I have not found
any information on the internet on how to go about making a counter
with a large display, which is to be fitted in a sports hall. Is such

I have a portable pro flash gun (Toshiba ES-38L) which is powered by 6
AA batteries arranged in series. The voltage across the positive and
negative terminals is therefore 9 volts.
It eats up batteries and I would like to use it indoors with an AC/DC

I am trying to specify the connector shown at
http://www.powerstream.com/z/2pole.jpg
to a company in china.  Can anyone help me with a manufacturer,
part number, or even what these things are called?  I have

Any easy way to reset service reminder in VY Commodore other than going to a
workshop please?

I'm in the UK and looking to prototype a 4 layer board nominally 100 x
200mm.
Can anyone point me in the direction of a low price manufacturer for say 2
off?

I want to build an automatic disconnect for a set of external batteries
I have on a UPS so I can charge them faster than what the built-in
charger on the UPS will do. However, I am having trouble finding parts.
The batteries take an 8mm bolt, and I want to stay consistent with the

Hi, I'm looking for something with AC male on one end, and AC female
on the other,  that can plug an AC device (sump pump) into, that will
emit an audible tone when the device is running and consuming current.
Kind of like an audible pilot light, or an electric meter that

Anyone got a copy of the TV Panasonic TC-AV26ZR schematic?

I am in the market for a decent introduction and mid-level course on RF, in
book form.  I think I have narrowed my choices down to two volumes, and am
interested to see if anyone has anything to say about either one.  1) RF
Circuit Design: Theory and Applications (Reinhold ...

I'm looking for a COB(chip on board) PCB with a blinking led. This can
be found in toys and electronic candles.
I need to find manufacturers or resellers which I think are mainly in
China.

Hi, sorry if this is the wrong board, I wasn't sure which ones to post
this to.  Anywho, I have some 400 Watt speakers that I would like to
take with me to the UK (I'm moving there).  Anybody know what I need
to safely use these in the UK?  Are there heavy-duty converters I can