Electronics Forum / Electronics / October 2007

Please, who is recommended for PIC chips, programmers, books, info?

We have one -- the normal type that have a 9v battery and fit to the
ceiling. It started beeping intermittently (and loudly) so investigated.
"Old" battery showed 9.4 v dropping to 8.9 v when loaded with 750K (giving
approx 20 mA load - probably much too high). Replaced battery ...

I need a 2SC5707 transistor (leaded package, not smt) for the inverter
in a Dell (= Benq) LCD monitor, model E172FPb.
Its specs are 80V, 8A, 15W, hFE (min) = 200, VCE(sat) = 170mV @ 2A,
tON = 30ns.

Was the USB "A" connector designed with the requirement for
supporting (in both the electrical and mechanical sense) things like
flash memory sticks known beforehand, or was that just a stroke of
luck?

Hello Every one,
                     Iam working on a reseach to determine the
transfer function of a voice coil motor based on its displacement and
got stuck in finding out were to supply the input for a voice coil

I have just bought a Panasonic 81cm LCD TV (Model TX-32LXD700A). So
far, I am very impressed with the picture quality, ease of setup,
options for inputs etc.
I was suprised that it only has a 1 year warranty, as my Acer 19" LCD

I have an Optima Digital Projector model No EP757, when powered up standby
light flashes for a minute or so then goes solid for another minute or so
before return to flashing. Fans are not coming on at all either
Brand new globe, Techo told me there is a fault with a ground ...

Please can anybody suggest the best route for doing this. Ideally we would
like a simple flag to let us know if we lose any phases. The flag would need
to be in the form of a 5-12 volt DC signal out to control equipment.
Best regards Steve

I live in an area where the only Internet access I can get is through
my mobile phone provider's (Sprint) EVDO network. I use a D-link
Kyocera KR1 EVDO router to get Internet access through my computer
(CAT5 cable from router to computer).

I have one of those LCD 0-200mV panel meters that I want to boost its
sensitivity to 0-50mV. Absolute accuracy is not important, more of an
'indication'. Any suggestions how to best do this?
JERD

Dimmer won't work when connected to power inverter
I successfully tested an 18ft long section of rope lights (Hunter brand) and a 3-stage touch dimmer in my house before taking out to install it in my RV.  After plugging it into my 12VDC to 110VAC power inverter it just has one ...

Hi Peter,
   Please get a cup of coffee and read my post again.   Where did
I say my control is "dead"?
   The dehumidifier, which has a mechanical control,  is "dead".

I have 4 motors on a aluminum frame.
I want to able to steer it.
Please tell me how I would go about doing this.
Please answer to Group

   Does anyone know if there is a dehumidifier, instead of using
a humidistat setting,  allows you to set the time on and the time off?
   Example: Set the dehumidifier to run for a half hour, then be off
for an hour.   This cycle repeats over and over.

Howdy everyone,
I'm looking for an antenna rotator. I'm down deep in a gully where I'm
picking up VHF reflected off a gum tree covered hill. Once the wind gets up
the reflection angle changes (due to the gums moving, not my mast) . Antenna