"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