Why is it called an "NE-2" probe, rather than just an "Ne" one?


Martin

Fleetie wrote:
Why is it called an "NE-2" probe, rather than just an "Ne" one?

The may be an NE-2 or NE-3.

don



Martin

On Sat, 14 Nov 2009 08:49:39 -0700, don don wrote:

Fleetie wrote:
Why is it called an "NE-2" probe, rather than just an "Ne" one?

The may be an NE-2 or NE-3.

don



Martin

Not just NE-one can understand.

"John Fields" wrote in message
...

So it looks like a neon bulb in a straw. What else is in there?

Does it light up from the voltage gradient?

Shaun

On Sat, 14 Nov 2009 11:37:01 -0600, "Shaun" wrote:


"John Fields" wrote in message
.. .

So it looks like a neon bulb in a straw. What else is in there?

---
It's an NE-2 neon lamp epoxied into one end of a piece of FR-4 tubing
---

Does it light up from the voltage gradient?

---
Yup

JF

On Sat, 14 Nov 2009 14:47:25 +0000, Fleetie
wrote:

Why is it called an "NE-2" probe, rather than just an "Ne" one?

---
Because the lamp is an NE-2.

JF

John Fields wrote:
On Sat, 14 Nov 2009 14:47:25 +0000, Fleetie
wrote:

Why is it called an "NE-2" probe, rather than just an "Ne" one?

---
Because the lamp is an NE-2.

JF

Ok, where does the "2" come from?

Thanks,

Martin

On Sat, 14 Nov 2009 19:20:06 +0000, Fleetie
wrote:

John Fields wrote:
On Sat, 14 Nov 2009 14:47:25 +0000, Fleetie
wrote:

Why is it called an "NE-2" probe, rather than just an "Ne" one?

---
Because the lamp is an NE-2.

JF

Ok, where does the "2" come from?

Thanks,

Martin

Two poles, instead of one pole and a "reflector".

Just a guess.

Fleetie wrote:

John Fields wrote:
On Sat, 14 Nov 2009 14:47:25 +0000, Fleetie
wrote:

Why is it called an "NE-2" probe, rather than just an "Ne" one?

Because the lamp is an NE-2.

Ok, where does the "2" come from?


NE-2 is the OEM part number, so it is number two in the NE series of
lamps.


--
The movie 'Deliverance' isn't a documentary!

Michael A. Terrell wrote:
Fleetie wrote:
John Fields wrote:
On Sat, 14 Nov 2009 14:47:25 +0000, Fleetie
wrote:

Why is it called an "NE-2" probe, rather than just an "Ne" one?
Because the lamp is an NE-2.
Ok, where does the "2" come from?


NE-2 is the OEM part number, so it is number two in the NE series of
lamps.

Ah, yes. So it is. Just found a reference to it
as a caption to a pic in this wiki page:

http://en.wikipedia.org/wiki/Neon_lamp

Thanks, guys.


Martin

Archimedes' Lever wrote:
On Sat, 14 Nov 2009 08:49:39 -0700, don don wrote:


Fleetie wrote:

Why is it called an "NE-2" probe, rather than just an "Ne" one?

The may be an NE-2 or NE-3.

don



Martin


Not just NE-one can understand.

Groan.

"Fleetie" wrote in message
...
Ah, yes. So it is. Just found a reference to it
as a caption to a pic in this wiki page:

http://en.wikipedia.org/wiki/Neon_lamp


You found a good reference there. If you haven't already, check out the
footnotes at the bottom of the page. For those of us older than about 55,
the ne-2 was the hobby circuit element of the day. Owing to its voltage
difference where the gas would start to conduct (about 70V) and its
sustaining voltage (about 65V), it could be used in oscillators or bistable
logic. I remember making crude binary counters out of chains of them. far
less expensive and lower power than making flip flops from 12AX7s.
The other good use was as in John's (Fields and Waves) use where the neon
tube in proximity to any high voltage gradient will glow with an intensity
proportional to the field.