Electronics Forum / Electronics / January 2010

My 2 to 10 gigahertz sig gen has an output of 2.2V,RMS,,,,how can I
bring this up to 5 volts NOT rms.
Thanks
Joe in Texas

i have a about 12 , li-ion   18650 ,  3.7 volt batteries , 6 " sure fire "
types and  6  " gtl " brand.
is it possible to connect them all up in series ,in  lots of two ( 7.4
volts)  , then paralell  them all together  for more current  ? charging

http://byaki.net/uploads/posts/2009-12/1261688729_fixed_14.jpg
This might be one of those cases where turning on the light may trip
the breaker due to inrush current.

** Hi to all,
that "dumped"  Rigol DSO continues to exceed my expectations.
The latest surprise came about when I investigated a high level of noise in
the trace at high gain settings  -  not inherent in the DSO mind you, but

I hope you all get nice and toasted celebrating 221 years of
oppression, dislocation and dispossession of the original inhabitants
of this increasingly sunburnt land, and more recently 10 years of the
racist rabble rousing regime of John “Eva Braun”* Howard and his nasty

Cellular phone questions:
 Do cellular phones only transmit to the nearest tower, and then at
point they go down into the underground (buried) land line
infrastructure... and make the entire journey via the landlines until

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=180299691454
Ebay Item Number:  180299691454
Had one of these brought to me by a friend, had bought it on Ebay in
order to run an AV television from a PC.

my Toshiba 37" lcd tv screen has a dark curved blurry mark about 150mm
long 10 mm wide at widest part,near centre of screen.
It is only visible in certain screen colours,not pure white but an
overall off white.It is not very visible during normal watching,only

Hi All , I don't know if I post to the right group but here it goes... Kay
Elemetrics used to make step attenuators in 50, 75 and 90 Ohms years ago.
The 2 first type usage is obvious but the 90 ohms units is not too clear. I
have one of these but really don't know what they were ...

We have a Telstra F2300 landline telephone. It has a base station with an
answering machine and a cordless handset. It has two additional cordless
handsets.
One of the handsets is failing, in that the display has lost a row of dots

A Street View of Google Street View Vehicle in detail:
http://www.overclockers.com.au/article.php?id=844480&P=1
And for all Australians world wide: "Happy Australia Day"
http://www.australiaday.com.au/

May wind up needing a quantity of SLA's to refit an APC UPS.  The
usual suspects list comparable units - 12v 5Ah 90W x 70D x 112H (+
terminals) - but they only have 4.8mm spade terminal.  The UPS
harnessing uses 1/4" and at the currents involved the size mismatch

Government offer of  *feed-in tariff of 60 cents per kilowatt hour (kWh)*
I'm a bit confused about the government offer of paying the owners of solar
photovoltaic (PV) systems  who put power back into the grid.
Is this at all possible in the real world?

I want to make light dimmer for my car to use as daytime running lights
(now required here by law), and I found this:
http://www.electronics-tutorials.com/devices/555-light-dimmer.htm
What do you think about this design?

I had occasion to visit the new Coffs Harbour Jaycar store, it is a nice
shop well stocked and laid out probably comparable to the Gore Hill
store. All I wanted was a 9 pin "D" connector and a MAX232. The
connector was no problem, I just rocked up to the bin, but all the