Questions tagged [neon]
The neon tag has no usage guidance.
30
questions
1
vote
2
answers
87
views
NE-77 neon glow bulb trigger electrode as signal source?
The NE-77 neon glow lamp is like the NE-2 externally but has a third electrode intermediate "trigger" electrode between the power electrodes.
The trigger electrode triggers the plasma by ...
- 269
9
votes
2
answers
2k
views
Is this really a neon lamp?
The photograph shows the printed circuit board from under the cover of this 240V AC indicator lamp. The page description says that the device is a neon indicator lamp, a statement confirmed by the ...
- 213
8
votes
1
answer
335
views
Different wire length on secondary of a transformer, is this detrimental?
So I’m in the neon industry, and the manufacturers of solid state switched mode HV power supplies recommend using the same length of wire for both ends of the secondary, which would require putting ...
- 715
3
votes
1
answer
121
views
Switching 5 kV for a neon sign
I have a project where I want to make something like a 7-segment display using neon tubes.
Using neon tubes is a hard requirement, so I cannot use LEDs etc.
I do not want to use one 12 ⇒ 5 kV ...
- 173
7
votes
2
answers
3k
views
Do neon signs emit x-rays?
I'm interested about whether or not a conventional neon sign such as this one could emit x-ray that could be harmful.
The sign that you can see in the picture is just below my office window so I'm ...
- 71
0
votes
5
answers
151
views
Help designing a safety indicator for a high current transformer
I'm working with a neon sign transformer and want an indicator (preferably a light) on the high/output side to give me a visual cue when there is current coming out of the transformer. I'm not 100% ...
- 3,492
12
votes
1
answer
724
views
What are the ways in which semiconductor-grade neon is critical for manufacturing?
This is a question about material use specifically in semiconductor manufacturing.
CNN's Ukraine halts half of world's neon output for chips, clouding outlook begins:
Ukraine's two leading suppliers ...
- 3,459
2
votes
2
answers
299
views
Enclosure connectors for neon light
I'm putting together an enclosure to hold the transformer and dimmer for a small neon sign. I'm quite comfortable with normal AC/DC stuff, but the output from the neon transformer is super high ...
- 195
0
votes
0
answers
122
views
Neon lamp connected in parallel to a motor
simulate this circuit – Schematic created using CircuitLab
I see a high voltage (100Vdc-1000Vdc) output when I measure with a voltmeter when the motor just starts to run. I connected a neon lamp ...
- 111
1
vote
1
answer
275
views
neon-indicator-lamp for a bypass switch
Please excuse my schematic.
This is a Dim-bulb Tester I am building. This is supposed to protect the device under test (DUT) that I will plugin into "outlet", by limiting the current, "...
- 298
1
vote
2
answers
526
views
Neon bulb lamp replacement for surge suppression
I'm restoring an HP 141T and it has a broken neon lamp which is used I believe as surge protection in the following configuration:
On the right is the CRT. I believe the only purpose for such lamps ...
- 71
0
votes
3
answers
165
views
Getting a neon light on the handset of an old GPO 700 series telephone to illuminate
I have been given an old handset for a 700 SRS rotary GPO telephone, with a neon light in the centre.
If it is connected across the ringer circuit, should it light up when the bell set is energised by ...
0
votes
1
answer
72
views
Can anyone identify this white board component in an electronic air filter?
Electronic air filter circuit board component?
1
vote
2
answers
1k
views
How do SPST neon-indicator-lamp wall switches power their neon indicator?
I am building a totally overkill electronics repair bench for fun while in quarantine.
Part of this bench build involves wiring up electrical distribution (i.e., a lighting feature to illuminate the ...
- 13
5
votes
1
answer
1k
views
A capacitor and a neon lamp focused circuit problem
Here is the problem I am stuck on.
The lamp starts out as an open circuit. Then capacitor charges up and eventually the voltage \$v\$ across the lamp raises. When the voltage across the lamp ...
2
votes
3
answers
213
views
Can I somehow use a neon bulb as a switch? [closed]
I’m trying to create a timing light. Due to the lockdown I can’t get any other parts. I have a neon bulb which does light up when I hold it next to the spark plug lead but it is too dim to be useful. ...
- 141
9
votes
3
answers
4k
views
Neon lamp symbol
I am new to neon lamps:
I just discovered its electronic symbol:
I am a little bit confused, What does the dot in the symbol mean? It looks like the neon lamp is polarized. How do I know what lead ...
- 525
1
vote
1
answer
92
views
Neon-lamp type tester glows on gooseneck lamp adjustable shaft
I have bought several adjustable gooseneck shafts with the intent of creating lamps of my own. I have put a brand new 2x0.75mm^2 cable through it and attached a simple E27 light fixture. I have ...
- 13
-2
votes
2
answers
106
views
Is this neon light display real or fake? how does it work? [closed]
Is this neon light display real or fake? if real, then how does it work?
https://www.youtube.com/watch?v=xlcywgEMuGI
- 949
26
votes
14
answers
15k
views
Is there any reason nowadays to use a neon indicator lamp instead of an LED?
I have a bunch of old neon indicator lamps recovered from old AC devices and used to indicate power status.
I wonder: is there any reason nowadays to use the neon lamps instead of LEDs? I see they ...
- 1,346
0
votes
2
answers
420
views
Generating plasma flame with neon transformator [closed]
I'm trying to create plasma fire with 10kV neon transformer, as shown below. The name is SIET METALBOX (10kV 30mA). How do I diagnose the problem? All wires are ok.
The issue is that the setup doesn'...
0
votes
2
answers
2k
views
Does this neon indicator light require a resistor to limit current?
I've got a few of these indicator lights from LEECRAFT/VCC, they're marked "tineon 3600" and "125V 1/3W". According to this page: http://wiki.diyfaq.org.uk/index.php/Neon neon lamps require a resistor ...
- 1
0
votes
2
answers
1k
views
Tesla coil - my primary circuit doesn't work
I would like to make a Tesla coil, so I bought a 10 kV 120 W 30 mA neon sign transformer from Aliexpress.
First potential problem, while playing with it, I noticed that when it stops ...
- 1
1
vote
1
answer
555
views
How does a 120VAC neon indicator lamp respond to a leading-edge triac dimmer?
I bought a dirt cheap toaster oven to convert to a solder reflow station, and I noticed in the teardown that it apparently has a neon power indicator. It goes out instantly when it loses power ...
- 5,686
3
votes
3
answers
1k
views
Neon Sign Testing
I am looking for a way to test a neon sign to determine the correct power supply size.
The power supplies come in a variety of different sizes but the most common are:
6kV and 10kV and a working ...
- 131
7
votes
2
answers
2k
views
What component is this?
I'm organizing a lot of components and don't know what this is. Hooked up to PS at low voltage and nothing happened. I can't tell the anode from the cathode. What is it?
- 71
2
votes
3
answers
3k
views
Powering neon indicator lamp from battery
I would like to power neon lamp like NE-2 from low DC voltage like 1.5 V battery.
Is it possible to boost low voltage like that to 85-120 volts which is needed for neon lamp? And can i use blocking ...
- 21
2
votes
1
answer
473
views
Safe inverter circuit to power neon indicators
I bought some neon indicators from eBay. I want to find a safe way to power them so we can do some experiments on solderless breadboards.
I can obviously power them from mains (120VAC/60HZ USA), but ...
- 2,716
14
votes
5
answers
19k
views
Why does a neon lamp indicator on a power strip switch flicker in the dark?
Neon lamp indicators embedded in power strip switches indicate whether the switch is ON or OFF.
When the neon lamp is ON in a dark environment (lights of the room are off), the lamp begins flickering ...
- 243
0
votes
1
answer
209
views
Can a piezoelectric inverter for CCFL work for similar sized neon tubes?
I've done some backlight work for instrument displays using CCFLs and designing custom drivers (12 Vdc to ~1000 Vac) so I have some experience with these designs. Recently a friend of mine was ...
- 1,527