Electronics Forum / Electronics / September 2006

Hi again,
  Would anyone have or know where I could get a schematic for this
old portable B&W TV which was once sold in Australia?
  Thanks!

I have been trying to set up a video sender, with the receiver unit
connected to an LCD tv. The audio signal works fine but the picture
strobes.
The unit I have been trying is a scart plug module, (type Nikkai) from

Sorry to post so many times in one day. I have a fax machine that I'm trying
to fix. Panasonic want $350 to fix it but I know what the fault is and it's
just a faulty cpu board. They tell me the part no on the board doesn't exist
but won't take the time to look up the correct ...

I have a NiCd battery.  The charger that came with it seems to have
given up the ghost (died) and I need to charge this battery.
This battery a 14.4v battery pack and I am told by the manufacturer
that it has a 1.5Ah capacity.  The charger that comes with the battery

I live on the fringe of the metropolitan area and we seem to get quite
a few interruptions to electricity supply. Mostly a few seconds to a
few minutes.
Anybody recently bought a UPS which impresses them as value for money?

I have two 12VSLA batteries which I want to keep trickle charged, but I
don't want to have two chargers ($50-00 each)
Does someone have a basic timer circuit which would work 24hrs on/24hrs off?
I would join both -ves together, and have the two +ves toggles to a relay.

My Garmin GPS runs either on six AA batteries or a plug-in to a car's
cigarette lighter. Rather than running down the NiMHs, I'd like to work
with the GPS at home using an independent power supply. I have a 6/12
volt battery charger that charges at a 1amp rate and a stand alone

is this possible? I have a scopex 14D-15 and I was hoping to be able to capture the oscilloscopes image and record it using a PC
capture card. Obviously the first step is finding a video output on the oscilloscope. There's socket on the front called 'EXT' but
I'm not sure exactly ...

ER14505 ER14505H ER14505H ER14505M  contact xiaomaosunny@hotmail.com
for more details .mwd defibrillators LS14500 TL-2100 XL-060F infusion
pumps bone growth stimulators SL-760 TL-5131 sunnywxb@gmail.com TL-2155
ER14505M ER17505 ER14505H ER14505S ER14505M ER14505C ER14505M LS14500

We are looking for small, light weight, long range wireless video
transmitters and receivers. Intendent applications are from blimp,
kite, model aircraft (UAV), high altitude baloon to ground live video
transmission.

About 30 years ago, I took some of D batteries in series and and connected
copper wire leads to them which I placed in a glass containing holding
some vinegar. I might have added a little salt on the theory that it
might aid conduction. The solution turned bluish in a few hours and

Well gang, I finally decided to come into the 21st century and get a DVD
player...
My mom was hounding me to get one for years.  I kept saying "They're still new
now but give it time.  People will be throwing them out eventually just like

The following is an link to an amazing video with lots of cool
electronic experiments demonstrated:
http://video.google.com/videoplay?docid=-4547786633997888579&hl=en-CA

Please visit www.AAARFProducts.com

I understand that an NPN base-emitter junction needs a voltage drop of
c. 0.6V so won't start turning on until Vbe exceeds that. Can I get the
transistor to start conducting when the input voltage (i.e. between the
circuit input and ground, common emitter connection) is around 3V.