Jules:
If you don't mind doing a little hardware / software:
I've been using a module from FTDI that 'talks' TTL level RS232 at
baud rate up to / past? 115Kbaud, and 'talks to' USB thumb drives.
Go to digikey / etc, and look at the 'VDRIVE3' from FTDI.
It does all the grunt work in handling
I have looked at the pinout, it is different, but you can use a method
called "dead-bug"
to wire the 7442 in place of the n8251.
I've attached the spec sheet for the n8251 to this email.
Karl
- Original Message -----
From: "Karl-Wilhelm Wacker"
To: "Genera
Mattis:
By the description, it is a 1 of 10 decoder chip.
Have you looked to see if it pinout compatable
with a 7442?
Karl
- Original Message -
From: "Mattis Lind"
To: "General Discussion: On-Topic and Off-Topic Posts"
Sent: Sunday, July 24, 2016 5:01 AM
Subject: Signetics N8251
If these are switching power supplies, the fizzing may be the output filter
caps
overheating and about to pop their safety 'corks' due to self heating due to
high ripple currents.
I can across this probelm in a Clary Datacomp 404 computer that I worked
on in the late 60's. The initial fix was a
traight 8 up on
Ebay just now)
From: Karl-Wilhelm Wacker: Tuesday, July 19, 2016 9:25 AM
Does anyone have one of the patch cables, and can they measure the
diameter of the pin and it's length?
The width goes from about .093" near the tip to 0.1" near the crimp. The
leng
They generaly use mirrors -
I would cobble something together by taking the laser diode read head from
a CD rom,
and removing the diode assembly, and glue a small, thin, front surface
mirror in its place,
and drive the coil from the output of an audio amp, just to try it out.
A pair of these,
Does anyone have one of the patch cables, and can they measure the diameter
of the pin and it's length?
Also, is it a straight pin or like a bannana jack with springy sides?
There is a company www.mill-max.com that makes almost any type of
pin/socket that you can think of -
take a look thru
