Source in Aus for 7417 IC's?

Guest
Hi, having trouble find these here in Australia. Anyone know of a good
place? Thanks.

Xygt
 
<xygt3@hotmail.com
Hi, having trouble find these here in Australia. Anyone know of a good
place? Thanks.
Click to expand...

** Farnell have two brands in their cat - Fairchild and Texas.

DM7417N and SN7417N

Amazing they still carry such obsolete stuff.





............. Phil
 
how many u after?

<xygt3@hotmail.com> wrote in message
news:1108559361.393259.21530@c13g2000cwb.googlegroups.com...
: Hi, having trouble find these here in Australia. Anyone know of a good
: place? Thanks.
:
: Xygt
:
 
Hi, only a few for my pinball. It uses them to drive the solenoid
trannies, and I've already raped my junker gameboards.
Being obsolete, is there a replacement? Someone had used 7414's
previously.

Thanks,
Xygt
 
xygt3@hotmail.com wrote:
Hi, only a few for my pinball. It uses them to drive the solenoid
trannies, and I've already raped my junker gameboards.
Being obsolete, is there a replacement? Someone had used 7414's
previously.

Thanks,
Xygt

I'll have a scratch around in my junkbox for you.
Click to expand...


Cheers
Giles
 
<xygt3@hotmail.com> wrote in message
news:1108597750.118086.185800@c13g2000cwb.googlegroups.com...
Hi, only a few for my pinball. It uses them to drive the solenoid
trannies, and I've already raped my junker gameboards.
Being obsolete, is there a replacement? Someone had used 7414's
previously.

Thanks,
Xygt
Click to expand...
Looks like you can use a 7407 in its place. Since this is an open collector
device, you could
combine a 7404 and a 7405 or two 7405 ICs. Really any combination that
provides an open
collector output and no inversion. If there is a transistor driver that
actually drives the solenoid,
you might be able to use a CMOS buffer like the 4050b. You can safely pull
its outputs up
above the power supply. I seem to recall that a pullup to 15 volts with a 5
volt supply was
acceptable. I don't believe the pinout is patterned like the TTL buffers so
beware.
 
On 16 Feb 2005 15:49:10 -0800, xygt3@hotmail.com wrote:

Hi, only a few for my pinball. It uses them to drive the solenoid
trannies, and I've already raped my junker gameboards.
Being obsolete, is there a replacement? Someone had used 7414's
previously.

Thanks,
Xygt
Click to expand...
If they're to drive some solenoids, then I recommend that you
replace the 7417s with an inverter and a ULN2003. The 7417
from TI has a maximum output high voltage of 15 volts, whereas
the '03 is about 50 volts and has integral diodes on the outputs, whereas
the '17 has none. The drawback to using the '03 is that it requires
an inverter on each of its inputs to create the same logic levels
as the '17, but this could be put in place with a 74HC14.

However, since Farnell apparently have the 7417, that may be a slightly
easier option to implement.
 
On 16 Feb 2005 15:49:10 -0800, xygt3@hotmail.com wrote:

Hi, only a few for my pinball. It uses them to drive the solenoid
trannies, and I've already raped my junker gameboards.
Being obsolete, is there a replacement? Someone had used 7414's
previously.

Thanks,
Xygt
Click to expand...

what brand of pinball is this in ?

May be able to help as still have some of that gear in the workshop
 
GM wrote:
xygt3@hotmail.com wrote:

Hi, only a few for my pinball. It uses them to drive the solenoid
trannies, and I've already raped my junker gameboards.
Being obsolete, is there a replacement? Someone had used 7414's
previously.

Thanks,
Xygt

I'll have a scratch around in my junkbox for you.


Cheers
Giles
Click to expand...

No joy I'm afraid - lots of other 74 series stuff though - ain't it
always the way!!!


Cheers
Giles
 
Hi KLR, it is a System 1 Gottlieb (I hear you shuddering!) Totem, and
the IC's are from the MPU board at Z6 and Z7. The output of the custom
Ux chip goes through Z6, then down to the driver board where it
controls the transistors for the playfield solenoids.

Thanks for taking the time to look.

Regards,
Xygt
 
On 17 Feb 2005 14:32:12 -0800, xygt3@hotmail.com wrote:

Hi KLR, it is a System 1 Gottlieb (I hear you shuddering!) Totem, and
the IC's are from the MPU board at Z6 and Z7. The output of the custom
Ux chip goes through Z6, then down to the driver board where it
controls the transistors for the playfield solenoids.

Thanks for taking the time to look.

Regards,
Xygt
Click to expand...
Looked through my parts - havent got one either.


Oh yuck
I remember these from about 25 years back

Custom? Rockwell chipset - and processor running so slowly that when
you triggered any switch on the machine - the displays would drop out
for a fraction of a second :)

Out of interest - someone has made a reproduction board for these
games using modern technology. Cant remember the name but Google
should soon find if for you if needed. Might come in handy for you in
the future if your boardset ever decides to die.

------------
The System 80 and 80A (that I did a lot of work on in the mid 1980's)
Was a big improvement, and very repairable by comparison. The last
boardset that they used (cue ball wizard, class of 1812 etc) was the
best for reliability and design. I only remember having to do one
repair and that was from a shorted out solenoid doing substantial
damage to a driver board. Dont know the history of this as at the
time LAI sold it to us with this fault already there. (though as
usual it was "working perfectly"
 
Yeah, they suffer from ground faults, and if they haven't got good
grounds they do weird things like hold solenoids on. This in turn burns
out the driver board and sometimes goes further to the main board. The
rockwell chips are custom, and can't be replaced.
There are two replacement boards for a System 1, called a Ni-Wumph, and
a Pascal P1(who also makes a System 80 replacment board as well).

I'm looking for a non-working pinball machine in the Adelaide area if
you know of one.

Thanks for having a look anyway.

Regards,
Xygt
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top