Old time op-amps

Y

Yzordderex

Guest
I need to get hold of an old op-amp. It's one of those round cans
with 8 leads out the bottom. It's a dual. Pinout is +v on pin 8, -v
on pin 4. Application is feedback amplifier for old Hp power supply.
Almost any bipolar op-amp with correct pinout will work. I looked in
Digi-key catalog, but nothing popped out at me.

73
Bob
N9NEO
 
Yzordderex wrote:

I need to get hold of an old op-amp. It's one of those round cans
with 8 leads out the bottom. It's a dual. Pinout is +v on pin 8, -v
on pin 4. Application is feedback amplifier for old Hp power supply.
Almost any bipolar op-amp with correct pinout will work. I looked in
Digi-key catalog, but nothing popped out at me.

73
Bob
N9NEO
Bob,
Click to expand...

I think the MC1458 is the one you are looking for.
Cheers
John
 
=?ISO-8859-1?Q?John_Damm_S=F8rensen?= (john-nospam@nomail.hovedpuden.dk) writes:
Yzordderex wrote:

I need to get hold of an old op-amp. It's one of those round cans
with 8 leads out the bottom. It's a dual. Pinout is +v on pin 8, -v
on pin 4. Application is feedback amplifier for old Hp power supply.
Almost any bipolar op-amp with correct pinout will work. I looked in
Digi-key catalog, but nothing popped out at me.

73
Bob
N9NEO
Bob,

I think the MC1458 is the one you are looking for.
Cheers
John
Click to expand...
That's not old time. I thought he'd be looking for something like
the 709, which might be hard to locate nowadays. I think I might
consider a 301 or a 741 "old time" but somehow I can't really
think of a 1458 as such.

Michael
 
Michael Black wrote:
=?ISO-8859-1?Q?John_Damm_S=F8rensen?= (john-nospam@nomail.hovedpuden.dk) writes:

Yzordderex wrote:


I need to get hold of an old op-amp. It's one of those round cans
with 8 leads out the bottom. It's a dual. Pinout is +v on pin 8, -v
on pin 4. Application is feedback amplifier for old Hp power supply.
Almost any bipolar op-amp with correct pinout will work. I looked in
Digi-key catalog, but nothing popped out at me.

73
Bob
N9NEO

Bob,

I think the MC1458 is the one you are looking for.
Cheers
John



That's not old time. I thought he'd be looking for something like
the 709, which might be hard to locate nowadays. I think I might
consider a 301 or a 741 "old time" but somehow I can't really
think of a 1458 as such.

Michael

A Google search for MC1458 reveals a Texas Instruments datasheet from
Click to expand...
1971. In my opinion electroninc circuits that are more than 30 years
old must be considered "old time". As far as I remember the 301 came out
mid-late 60's which only makes it 35 years old :)

Cheers
John
 
I thought "old-time" meant tubes.

In article <bh2tqb$q65$1@freenet9.carleton.ca>, et472@FreeNet.Carleton.CA
says...
=?ISO-8859-1?Q?John_Damm_S=F8rensen?= (john-nospam@nomail.hovedpuden.dk)
writes:
Yzordderex wrote:

I need to get hold of an old op-amp. It's one of those round cans
with 8 leads out the bottom. It's a dual. Pinout is +v on pin 8, -v
on pin 4. Application is feedback amplifier for old Hp power supply.
Almost any bipolar op-amp with correct pinout will work. I looked in
Digi-key catalog, but nothing popped out at me.

73
Bob
N9NEO
Bob,

I think the MC1458 is the one you are looking for.
Cheers
John


That's not old time. I thought he'd be looking for something like
the 709, which might be hard to locate nowadays. I think I might
consider a 301 or a 741 "old time" but somehow I can't really
think of a 1458 as such.

Michael
Click to expand...
 
Don (dobrien25NOSPAM@comcast.net) writes:
I thought "old-time" meant tubes.

That's even better.
Click to expand...

They were before my time.

Even hybrid op-amps were before my time, though for a long time I had one
sitting around. I think it was an Analog Device. I never did try it
so I don't know if it was working when I got it.

Michael

In article <bh2tqb$q65$1@freenet9.carleton.ca>, et472@FreeNet.Carleton.CA
says...

=?ISO-8859-1?Q?John_Damm_S=F8rensen?= (john-nospam@nomail.hovedpuden.dk)
writes:
Yzordderex wrote:

I need to get hold of an old op-amp. It's one of those round cans
with 8 leads out the bottom. It's a dual. Pinout is +v on pin 8, -v
on pin 4. Application is feedback amplifier for old Hp power supply.
Almost any bipolar op-amp with correct pinout will work. I looked in
Digi-key catalog, but nothing popped out at me.

73
Bob
N9NEO
Bob,

I think the MC1458 is the one you are looking for.
Cheers
John


That's not old time. I thought he'd be looking for something like
the 709, which might be hard to locate nowadays. I think I might
consider a 301 or a 741 "old time" but somehow I can't really
think of a 1458 as such.

Michael
Click to expand...
 
I've got one of those K2-Ws Bob Pease keeps raving about. Does that
qualify as old? OK, so he wasn't raving about them. :)

As far as TO5 metal can op-amps, they should still be available. Digikey
seems to be phasing out a lot of the slow moving stuff unless you want to
buy 1,000 pieces. :(

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