Electronics Forum / Equipment / July 2004

Have one client that keeps having network lock up. Have replaced the router,
but this doesn't help. Happens every 2 weeks, or so.
There's so many UPS's on the market, I want to weed out the bad ones.
What's your experience re. reliable and trash makes and models?

please i will like to know how a rotary walk behind lawn mower is
produced and assembled.
I am aMechanical Engineering student .
Thanks

Where can I get PICAXE products in the U.S.?  I am mainly interested in thw
PICAXE-18x Datalogger which i think is called the AXE110.
Seems to be several sources in AU and England but not here in the US.
Thanks

Hello people.
My friend has this device (it does not work), that can be seen at:
http://www.arbornet.org/~neguinho/unknown.jpg
It has LCD, alphanumeric keyboard. It is made by Hitachi, and has some Intel

I have an old 2235 'scope which has died on me.
It looks like the resistor  R909 and Q908 are fried . It also looks like
the IRF820 ( on heatsink) is blown.
Can anyone help with an excerpt from a service manual ( diag) or part

Has anyone out there got a single scan or photocopy I could buy or have for
either/and
Oscilloscope 2 channel vertical amplifier HP1801A
Oscilloscope 4 channel vertical amplifier HP1804A

   Could anyone help.  I am trying to find either a circuit or a piece of
equipment for a pre amp.
It needs to have a flat response from 0.1Hz to 2MHz (without switching in
diff. comps.) and capable of an input imp. of 100MR and able to deal with an

I just picked up a SUPERB condition Tek 7633 storage frame with a
timebase and a few amps.
It's all working perfectly, but I've got one issue, it may be me, maybe
the scope has a small problem, or maybe they're like this......

I'm taking a shot in the dark as I know some of these groups are not on this
topic but I've struck out so far on getting ops info on the Tek 2722A Sweep
Receiver.  I got it at the Williams AZ swap and it seems to work!   At the
motel in Williams it picked up the and displayed the ...

I've been fooling with Oscilloscope for Windows a bit today, and having
never seen (or thought about) such software before, and I'm wondering if
there's anything else out there having controls that more closely resemble a
real (traditional) scope.

Is there a way (crude is OK) to test the following two types of MOSFETs with
only a multimeter?
    2SK3296S (20V, 35A, N-channel)
    2SJ214A (60V, 105A, P-channel)

I am using a Agilent 34401A & 34902A instrument (6.5 digit multimeter)
and I am trying to get the best possible connection for precision uV
measurements.
I was going to go for shielded, twisted pair (for example Alpha Wire

I need a PCI or USB GPIB card so I'm selling my National Instruments
AT-GPIB / TNT Plug & Play ISA card. I was using it under Linux just
fine. Comes with 15 day warranty - $40. Email me if interested or with
questions.

To look at the digital signals/waveforms of a modern CPU, say, f = 1GHz
Pentium to be specific, how "slow" can an oscilloscope be? Is it governed by
Nyquist criteria here? Thanks
  Al-U

Lost most of my electronic equipment <insert long sob story here> and am
looking for someone that has an old UV EPROM eraser they would like to part
with cheap. It needs to be working and have a timer. Please email to
cmdr-dave@spamcop.net.