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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.

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"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? ;-)

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

It is an AM radio.


Martin

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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

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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

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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.

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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.

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"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.

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"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.

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"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