Electronics Forum / Equipment / January 2005

I have an item on Ebay that I don't really know what it is for or where it is
used. Any assistance would be appreciated.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=4521581932&r
d=1&sspagename=STRK%3AMESE%3AIT

WTB: Looking for a copy of the service manual for the IFR 1500 Service
Monitor.

Can someone help me????? My physics teacher asks me to identify what
internal resistance is and also he wants me to identify the effect it
has on a motor! Can someone help me with that information? I'm a little
lost on it! I tried finding information but no one was very helpful! I

Scope is a Phillips PM3217
Scope seems to work fine, but when unit is powered off the power
indicator LED blinks slowly.. once every 5 seconds or so. I'm wondering
if this is an indicator of 'hooked to AC' or 'standby' mode or

I have acquired two 1241 logic analyzers. One has a D1 and three D2
boards while the other has 4 D2's.
I would like to switch the D1 to the other machine. Is this process as
simple as removing the board from the one machine and inserting it in

I am interested in getting a microscope that is able to be hooked up to
my computer for my classroom.  I would like to hear from those of your
who have used them, found them to be easy to use, would recommend this
(or not) and in lessons plans.  Any takers?

I am working on a circuit that calls for a MM5837N noise generating IC chip.
This is an obselete chip and I need to find a chip that can take its place.
Any help in locating an alternate chip would be great.

My favorite piece of nostalgia suddenly stopped working. The +5V and other
supplies are ok.  The display is blank except for the decimal point.  The
clock is working but the IC it passes the signal to does nothing with it.  I
assume that it is a divider of some sort.  It has ...

I wish to reverse option 101 on my HP1740A 'scope to restore the standard
A-vs-B functionality.  Refer to section 4-107 in the service manual for
details.
I think I've identified the components involved, but I'm slightly worried

Does someone know a company in the US who sells and ships
Tektronix scopes to Europe?
Here in Finland they charge around almost 100% more them...
rick

Need all the paperwork on this thing and can't seem to find it
anywhere with a search, I though I had this stuff already but can't
seem to find it on my machine either. Arg! thanks in advance for a
link if there is one just e-mail it to me. thanks!!!

Help needed
Does anyone have a simple PIC / video sync / genlock circuit for on screen
display or video overlay of some small graphics and text overlaid on NTSC
video or (RS-170). There are commercial IC's from Maxim, ST micro, TI, but

the HP 10544A OCXO driving my HP5328A counter failed due to a blown
thermo fuse. The underlying problem was a broken Thermistor lead
(unfortunately within the sealed hole) which caused the owen to run away
(and blow the fuse). I already searched, but didn't find answers to the

I'm in a situation where I would like to buy (or build, prefferably the
former since I have little to no skills in electronics) a large number
(perhaps few to start with, but scaling up to 100 or so) rf
receiver/transmitters.  I would like to use these in an academic setting,