Electronics Forum / Design / October 2006

 Is Pspice very useful? I am a newbie and want to know if it is very
useful. Thanks a lot.
 Cheers,
 B

I got a heater with a ceramic heating element that has a negative
tempco.  This kind of bugged me out, but I decided to make lemonade out
of the lemon and design a circuit to keep the temperature of the
heating element confined in a window.

please can anyone there assist me with this ,am to  Design a pulse
generator delivering triangle topulses and square pulses with an output
frequency of 1kHz and peak values of ± 10V.  Not to  implement an
external signal input source. Please i need appropriate circuit diagram

I'm using an optical sensor, and need a low pass filter for my FVC? I'm
hoping RC but will use op-amps if needed.

Does anyone know any free or open source software(s) can simulate
digital volt meter, oscilloscope and generate the final PCB layout from
it?
Thanks,

I'm going a bit crazy trying to work out how a marketing gizmo
operates. Would appreciate any thoughts!
My local supermarket just installed a small Pillsbury promotional
freezer, roughly cube shaped, and about four feet on each side. On the

Can anybody help me with this?
I lay out my schematics by myself. It was done by outside contractror
once - I had to redo it: few switchers on fairly densely populated
board, one needs to look at the schematic (and understand it) while

Try to hide your astonishment.
I posted last week about trying to get a Colpitt's oscilator working at 10
MHz, and several people generously offered insight and advice.  I tried to
respond that I was grateful, but had been staring at the damn thing for so

By chance, has anyone used these before?
They make a lens specifically for the Luxeon 1 watt stars.
I've been trying to eliminate the "hot spots" and have tried everything from
mounting the LED's backwards....you name it.

I have a 3.7, three connectors Lithium battery in my cellular phone that
discharges faster than it is charged when I used the phone to browse
Internet, so I connected three wires to the contacts in the phone, plugged
off the battery and tried to run the phone feeding it with an ...

Hi, Im looking at the canon Pixma iP4300 printer
but think il take advantage of getting a test print from it first,
I want to try and see if it can print a codewheel 50mm diameter with 2000
lines,

Hell All,
I am a newbie to the field and I am kind off intrgued on how people
manfucture small electronic devices. That is, say, I have an idea: to
make a "calculator" kind of device that can take the amount of time you

Would like to know, if any one has ever used
this device with the Modem control lines to operate
remote equipment in connection with the sound card operations?
   I'm having a little problem resolving an issue that seems

 Can anyone recommend a beginning book for pspice software, I never
use it before and just get it installed, thanks a lot.
 Cheers,
 B

The PHB poked his head into my office this afternoon and says, "See if you
can find out what this is" and handed me a post-it with "CD4MCV" written
on it - he seemed to indicate it's some flavor of plastic.
Anybody heard of it and know of a spec anywhere?