On Thu, 16 Oct 2008 14:00:02 +0100, Eeyore
wrote:



Marky P wrote:

Eeyore wrote:
Marky P wrote:

ZN414 (this is an FM radio on a 3 pin chip)

For a TRF design.

IIRC I recall someone once asking for one of those sci.electronics.components.

You could offer them on there rather than junk them.

Graham

FS: All the above mentioned IC's. Offers welcome :-)


Marky P.

"Marky P" wrote in
message


Can't remember if any of these are op amps, but here are
the numbers:

LM382N

Low noise dual preamp.

http://pdf1.alldatasheet.co.kr/datas...SC/LM382N.html

LM380N

2.5 watt power amp

http://www.national.com/pf/LM/LM380.html

LM3482A

Precision Current Gauge IC with Internal Zero Ohm Sense Element and PWM
Output

http://www.national.com/mpf/LM/LM3824.html


LM741 (pretty sure this is an op amp)

Yup and a real oldie. Slow and noisy, not to mention power hungry and a
weak output for what it does.

http://www.national.com/mpf/LM/LM741.html


M5K4164ANP (ain't a bloody clue what this is)

http://www.alldatasheet.com/view.jsp...ord=M5K4164ANP

RAM chip.

TIP31A

Power transistor

http://www.onsemi.com/pub_link/Collateral/TIP31A-D.PDF

ZTX300 (a little 3 pin thing)

NPN signal transistor

http://www.datasheetcatalog.com/data...3/ZTX300.shtml

ZN414 (this is an FM radio on a 3 pin chip)

http://www.electronics-lab.com/projects/rf/008/


MJE2955

PNP complement to the MJE3055 which is a 2N3055 in a cheap plastic case.

http://www.onsemi.com/PowerSolutions...do?id=MJE2955T


BTW Marky, the trip down memory lane was fun for me, but have you ever heard
of google? ;-)

Marky P wrote:
ZN414 (this is an FM radio on a 3 pin chip)

It is an AM radio.


Martin

In article , tony sayer

wrote:
BTW I just paused as I heard that Winter is approaching. The geese are
flying over. So loud that I can hear them though the double-glazing.
Nice sound, but sorry to wave farewell to summer...

What summer was that then?..

The one we just had that seemed wet enough to keep the geese happy. :-)

Slainte,

Jim

--
Change 'noise' to 'jcgl' if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

Fleetie wrote:

Marky P wrote:
ZN414 (this is an FM radio on a 3 pin chip)

It is an AM radio.

True. Missed that.

Graham

On Thu, 16 Oct 2008 14:49:33 +0100, "Fleetie"
wrote:

Marky P wrote:
ZN414 (this is an FM radio on a 3 pin chip)

It is an AM radio.


Martin

Is it? Wonder what the hell I bought that for then? Can't remember
having any plans to build an AM radio?


Marky P.

On Thu, 16 Oct 2008 16:17:03 +0100, Jim Lesurf
wrote:

In article , tony sayer

wrote:
BTW I just paused as I heard that Winter is approaching. The geese are
flying over. So loud that I can hear them though the double-glazing.
Nice sound, but sorry to wave farewell to summer...

What summer was that then?..

The one we just had that seemed wet enough to keep the geese happy. :-)

Slainte,

Jim

I'm still waiting for summer. I won't be putting the clocks back or
celebrating christmas 'till I've had my summer!

Marky P.

"Arny Krueger" wrote in message
...
BTW Marky, the trip down memory lane was fun for me, but have you ever
heard
of google? ;-)

Obviously not, or he just prefers others to do it for him, and you were
happy to oblige.

MrT.

"Arny Krueger" wrote in message
...
"Marky P" wrote in
message

[...]

LM741 (pretty sure this is an op amp)

Yup and a real oldie. Slow and noisy, not to mention power hungry and a
weak output for what it does.

This was arguably the "breakthrough" IC op-amp. It was one of the first
popular devices that was actually a monolithic design, and not a hybrid like
some of the original Burr Brown modules. It was compensated for unity gain,
which made it much too slow for anything but a buffer for audio work. It had
a slew rate of 0.5 volts/microsecond. With a +/- 12 volt power supply, 6 kHz
rail-to-rail was about it for non-slew rate limited signals. You could get
20KHz through it if you were content with about 4 volts peak.

I think it had more applications in analog computing, integrators, low
frequency function generators, servo controls, etc.

"Marky P" wrote
On Thu, 16 Oct 2008 14:49:33 +0100, "Fleetie"
wrote:

Marky P wrote:
ZN414 (this is an FM radio on a 3 pin chip)

It is an AM radio.


Martin

Is it? Wonder what the hell I bought that for then? Can't remember
having any plans to build an AM radio?

I don't know, but it is AM. I had one and built a little radio from it
when I was a teenager in the late 80s. Actually, I think mine was ZN414A, but I can't
remember what the "A" designation indicated.

Ah: Googling the two codes together gave just one hit:

---
"For those who will doubtless ask, ZN414 has been discontinued. Some years [ago,] it
was upgraded to ZN414A, which lowered noise, increased gain. But that, too has been
supplanted by yet another chip that's still current, though the designation escapes me."
---

Other chips-from-childhood:

555 (since before age 10)
741
4001, etc.
4017 - Racing LED patterns
4051 - analogue switch, IIRC. Used it to make a crude 8-channel-from-1 'scope add-on
4069 - Was this a hex inverter
40106 (IIRC) - Hex Schmitt inverter?
TDA2030
LM1875 (IIRC)
HY60 (module)

And probably many others that I've forgotten!


Martin