Electronics Forum / Design / March 2007

I'm trying to design/build a FM detector using a PLL (4046 with
carrier frequency = 150 kHz). Anyone know of any good sites I can
visit (there are jus too many out there!) / recommended books that i
can lay my hands on that provide reasonable heuristics/guides.

I always thought the voltage across an inductor was -Ldi/dt. Yet it
cannot be, because for a conductor with zero resistance and carrying a
finite current, the electric field inside it must be 0 meaning there
is no voltage across it's ends. When we talk about a voltage existing

I've been doing some testing over the years, and figured I'd take some of
the information I've posted on varous forums and start putting it in one
spot.
Right now, I'm putting the info together, I'll be going back and cleaning

Another irritant for the leftist weenie crowd...
I was just contacted by the Op/Ed Page Editor of the Ahwatukee
Foothills edition of the Tribune saying, since I have this way of
writing letters-to-the-editor that get everyone's shorts all twisted

I have a well stocked test bench at home containing a range of analog,
digital and RF test equipment as I am sure most of you also do.
Well the question I have is how do you handle the calibration of your
equipment? What do you use for calibration standards for resistance,

ISLAM AND TERRORISM
BY
DR. ZAKIR NAIK
http://www.irf.net/irf/download/index.htm

I want to collect data from auto (taxi) to a control office.
Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.
Regards,

http://www.josepino.com/pic_projects/security_keypad/JP6296.gif
Does anybody know how this works [see atached link] ? It's a 12 keys
keyboard which use only 4 wires.
I need a clue about how the software it's made, and, generaly how this

I searched the component name LTC1043 on LTspice, but I can't seem to
find it. Is it an extra component I need to download?
If you have one, can you please email me a copy?
I simulate my chopper stabilized circuit on multisim because I can't

I tried to find those ancient solderable terminal strips as seen on
http://www.meci.com/index.php/cPath/67
Has anybody found this at Digikey?
But while looking, I found prototyping with turrets and turret boards.

I am trying to simulate a chopper stabilized amplifier circuit using
multisim or LTspice.
Does anyone have any resource(i.e. schematic files or detail
schematics) related to implementing chopper stabilized amplifier using

Where I can find the COMPLETE Circuit Symbols of Electronic Components in
svg format?

I have in the past hand soldered SOIC packages for prototypes using a microscope
and a soldering pencil.  But now I am faced with a chip that is only available
in an LCC package - the kind with the contacts under the chip.  It only has 8
pins.  Is there any hope that I can solder ...

Select this link:
http://patentinfo.european-patent-office.org/off_pubs/pub_serv/index.en.php
and search for
EP1750145

I'd like to find out the power consumption of a mobile phone in watts.
I've got the following info:
"Maximum Power Capacity (Watts)      3.7V Li-Ion 760mAh"
Would this mean that the power consumption of the phone is = 3.7*0.76