Electronics Forum / Components / May 2006

Dear Sir,
  I had a small query which i thought i would ask you. can you please
tell me if there are IC's which can read and measure AC signal, convert
it to DC,trace the 2nd and the 5th harmonic component in an AC wave of

Do I understand correctly that even 2 identical components (same brand
and part number)  can perform not quite as well as the other?
In such a case, what's the way to get the 'ideal' component? Just keep
buying them and testing them to see which one gives the desired

Has anyone successfully programmed an LPC2103 using Rowley Associates
CrossWorks for ARM and the ARM USB CrossConnect? It does explicitly
support LPC2104, but it doesn't say anything about 2103. I know the
LPC2103 is newer, but it also has less memory, and I don't know if

OK, I don't know too much about heat dissipation.
For semiconductors that are designed to take heat sinks I can do the
arithmetic of adding thermal resistances from the semiconductor
datasheets + thermal resistance of the thermal pad + thermal resistance

I am looking for a supplier for a 6 pin din male to female converter (not
mini / PS/2) in the UK - ie a gender changer.  This needs to be openable so
I can get in and swap a couple of pins.  I have tried farnell and maplin,
but they seem to only to supply plugs and sockets.  ...

I am looking for a simple tilt sensor circuit that will sound an alarm and
that will run off a 9V battery? If anyone could point me to some designs or
a predesign circuit I could buy; I would be most greatful.
Thank you for your time.

I can not handle a problem which is about AGC. Please help me about
that. The conditions are;
It is required to design and implement an AGC circuit
with the following specifcations:

Does anyone know where to get a small quantity, 5-10 pieces, of ds32khzn
chips in a DIP form?
Eric Millbrandt

Hi, I've been searching for a while with no luck.
I need to identify a manufacturer of photodiodes (I think they are
photodiodes) that are used in laser targets (the kind of electronic
laser targets that builders use to determine level).

I welcome any recommendations for a single IC to do this. It has to be very
easy to use.
I'm getting the frequency extracted from the input signal ok, I just want
to convert a linear DC voltage representing frequency to one linear with

Computer Solutions is now supplying the Embest range of ARM Development
tools.  These include UNetICE, a low-cost, high-speed JTAG emulator for ARM
processors, Debugging and Flash programming software to support it and a
wide range of ARM Evaluation Boards.

I'm trying to identify some of the components in an older mp3 player
... doing a bit of hardware hacking.  I'm having real trouble with a
couple ICs.  I'm wondering if there is a general guide to identifying
ICs anywhere.  I apologize if this has been answered before, but

What is the motion sensor that has the lowest power consumption?
Distance is about 10 feet or so.
Any ideas?
Thank you,

TEKTRONIX - 485:  Portable Oscilloscope.
350 MHz at 5mV/div NSEC/div sweep rate
0 div/NSEC writing speed.
Alternate switching between intensified and delayed sweeps.

I'm trying to identify a manufacturer of an ic whose logo appears to be a
back to front RJ or RU.  I've seached the net and can find many other
manufacturers but not this one.  Strangely enough I've seen this logo many
times before so it doesn't seem to be that uncommon.