Electronics Forum / Electronics / April 2006

I am trying to track down some DC to DC converters with the following
specs:
Input: 10-30V
Output: 13.5 - 15.0V @ 3-4A

How would you make an as yet legal giant portable zapper capable of
causing spark or induction induced trauma to digital fixed speed
cameras,or maybee hand held ones for in your face journalist cameras.
How much light would it take to damage a ccd ???

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Greetings All
Can I make voltage multipliers from several ULN2003A Darlington Array IC
chips?
I'm trying to increase the voltage out my National Instruments usb-6008.  I

I have a mains to USB charger that effectively changes the mains voltage to
USB power output levels. This specific one came with my Blackberry. My
question is, can this be used for any USB device that is charged/powered by
the USB port (eg. Ipod)?

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Mates,
Water is the big issue, not only in quantity but as well in quality. The
main problem is the fact that the Dudes in control are completely clueless
about such issue. They have never done a full day work in anything

I have a 10(?) year old battery charger.  It doesn't detect when a
battery has been charged.  I must remember to turn it off or remove the
batteries.  A real pain in the @$$.
It also doesn't take D size so I want to get a new charger that does.

Looking for a flow sensor that will detect liquid flow in 19mm plastic
tubing.  Don't need to know the flow rate, merely the presence or
absence of flow.  Preferably without any significant line restriction.
It's purpose would be to switch a warning device when flow stops so

I have a small metal outdoor speaker that used to be used for paging
and general voice purposes.  I was wondering if I plugged it into an
EARPHONE jack of a radio, tape player etc... as long as the jack sizes
were in sync if the speaker would work.

Friends,
A buddy of mine found an unusual electronic device in his van.
http://www.misanthropia.com/blog/index.php?/archives/15-What-the-Hell-is-That.html
any ideas what it is?

Anyone capable, or know of someone who is capable, of updating firmware for
me on a Nokia 6600 for a small fee?
I used to know someone who could do it when I lived back in Melbourne, but
have moved and won't be back that way for a long time, so hopefully will be

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hi to all!!!!!!!!!
can you please suggest me some video processors that i want to include
in my design of USB frame grabber.let me be more clear.i am under
process of designing of one frame grabber board which will receive