Electronics Forum / Equipment / July 2004

  I am stuck with this problem of a BGA chip getting fried within a
few seconds of powerup.The chip takes in 2 power supplies.1v for core
and a 3v3 for i/o's.There are no overshoots or undershoots that i can
see in the oscilloscopes.

Hello...
I haven't been long around DSOs, so I don't know if I'm getting
something all wrong (reads: please bear with me :) It's an HP54615B.
I'm trying to trigger on the first rising edge of a signal on CH1

Couple months back I purchased Circuit Creator Pro PCB Design Software
for just $195.  By now, have designed 7 PCBs and got the boards made.
Software has worked very well.  It has some features available in
expensive package like Orcad.  Demo can be downloaded from following

Does anyone know of a good benchtop variable power supply that can do
30VDC and 30A?  Any leads would be greatly appreciated. . .
Regards,
Yuto Shinagawa

I am having a problem find a frequency counter/time interval analyzer
that is capable of the following
Reasonable accuracy at
* Measuring 15MHz signal

I got R3762AH Network Analyzer but without user/service manual. I would like
to buy/trade with anyone who has this manual. Please response if you have
this manual.

I am trying to buy some fax film cartridge (KX-FA93) and during  the
search have come across a number of dirt cheap Compatible fax film
cartridge either on Ebay or other web sites.
Now my question is are the Compatible (OEM) fax film cartridge of the

I asked a question before and received  answers which, although
helpful
to some extent, did not provide me with what I need to know.  So, I
decided to rephrase the question.

Hi, I am looking for a PC-based logic analyzer to read a signal with a
frequency of 1 MHz and store it in memory.  My primary concerns are
cost and reliability.  What would you guys recommend based on this?

Various eBay auctions for vintage (1970's) Microprocessors, RAM, PROM,
etc.
(used in early computers, video games, etc.)
8080 (2) and 8080 Support Chipsets...

Hello again all,
I have a polarized, 2-conductor power cable.  If I use this to power a
device that is in a metal cabinet, how do I safely ground the chassis of
the device to prevent user shock in the event of a hot short to chassis?

   Hi
Could someone be so kind and scan the input stage of any old transistor
oscilloscope.
I am trying to get some idea of producing a pre-amp from DC to 1MHz.

Hi, all-
 I have an older Logical Devices PromPro 8X EPROM burner that I need to
keep using to maintain some older equipment.  (The dedicated software
will not "talk to" other/newer programmers.)  The problem is, I have