Electronics Forum / Design / August 2006

I will be controlling the inputs of these XORs directly from a PIC
output, both PIC and Logic powerd from the same regulated +5V. I have
two choices:
ST's Single XOR 74V1G86STR in a SOT23-5L

I am trying to get a handle on the current (or at least fairly recent) 8 bit
microcontroller market. There is plenty of anecdotal evidence around,
usually to show a particular manufacturer in a favourable light but apart
from spending several grand on a marketing report I have been ...

Hi i am designing a board that will connect to a pci-x single board
computer directly (without backplanes) via PICMG 1.0 edge connector in
the sbc, problem is that IDSEL is not direcly available on the Card
Edge Pins, the PICMG 1.0 Specification tells that IDSEL1's must be

I am asking this question for my friend. He is going to do his MSEE in
Analog/Digital ASIC at the Lund University,Sweden. He wants to know
about the future prospects in this field
P.S: He is an Indian and will be on a limited period(prob 2yr) student

There are already a lot of topics about transimpedance amplifier with a
lot of references and I'm now waiting for the Graeme's book about
photodiode amplifier. But there is one issue that is not so discussed :
the bias voltage.

Does anyone have pspice model for the LM567 or NE567

Hiya, I was considering adding either a floppy and/or hard drive into a
project I'm working on, and since either requires 12v to run the
motors, I got to wondering about something.  Are the logic and motor
components of such a drive totally isolated from one another?  I mean,

Hello, I was wondering if there is an "up-to-date" replacement for the
741 op-amp.  Someone said that a TL081 or LF156 will work in my
application, but I couldn't find either in my Allied or Newark
catalogs.

Has anyone come across any sane ways to reconfigure an SMPS? There are a ton
of ex computer ones out there - it'd be interesting to rework one to
generate +12 V say.

How can I detect when a rifle fires a shot?
I'd like to try and build a device that can keep count of how many
shots has been fired by a rifle. The purpose is to relieve the shooter
from the task of keeping count of when the rifle barrel need service

I'm on the lookout for a cheap but reliable tactile SPST momentary push
button key. Switching requirement is of the order of micro-amps, since
it would be interfaced with a microprocessor. The application is a
device to be used in Automobile. And the switch could be pressed on an

Can u tell the ways in which breaking up of Ozone can be stopped
2O ---- > 3O
    3            2
Can u tell the name of any negative catalyst which can help?

I recently saw the CE mark on a standard retail AA alkaline cell.
The bulk pack showed they were made in China.
Is there a requirement for CE marking/compliance of such batteries - if
so what would a declaration confirm? - or is it typical chinese 'label

This announces the Open Instrumentation Project (OIP), which has been formed
to support open-source software and low cost hardware for electronic
instrumentation.
The objective is to make electronic instrumentation readily accessible to

I am using the ADP667 to bias my FETs. Its a variable DC-DC regulator,
but i want to add a current limiting capability to it, so that i don't
fry my FETs with a huge inrush of currents in some worst case scenario.
Are there any linear regulators available with current limiting in