Solved Are CRT Tubes Tied To A Specific Voltage? (either 110V or 240V) - NO THEY ARE NOT
- Thread starter eliotcole
- Start date
Very much so! 
... and ... lol ... I wish I was that productive / skilled! 😅
Thank you, I see. It's an interesting discussion.
... and ... lol ... I wish I was that productive / skilled! 😅
I was thinking maybe you were re-starting CRT production from your garden shed or something
and just to add a basic ai answer as i think this is where you are coming from ?
For basic cathode ray tube experiments, a voltage as low as 50 volts can be sufficient to produce a visible electron beam. However, higher voltages, often in the range of 300-400 volts, are commonly used to obtain a brighter and more stable beam, especially when using tubes designed for low voltage operation. In early experimental tubes like Crookes tubes, thousands of volts were used to ionize the gas and generate cathode rays.
Here's a more detailed breakdown:
For basic cathode ray tube experiments, a voltage as low as 50 volts can be sufficient to produce a visible electron beam. However, higher voltages, often in the range of 300-400 volts, are commonly used to obtain a brighter and more stable beam, especially when using tubes designed for low voltage operation. In early experimental tubes like Crookes tubes, thousands of volts were used to ionize the gas and generate cathode rays.
Here's a more detailed breakdown:
- Early Cold-Cathode Tubes (e.g., Crookes Tubes):
These tubes relied on high voltage (thousands of volts) to ionize the residual gas inside the tube, which then produced electrons that formed the cathode ray.
- Modern Low-Voltage Tubes:
Modern designs, especially those using Wehnelt cathodes, can operate at much lower voltages (300-400 volts) while still producing a visible electron beam.
- Factors Affecting Voltage:
The required voltage depends on the specific tube design, the desired beam intensity, and whether the experiment involves other factors like deflection or fluorescence.
- Voltage and Beam Properties:
Higher voltages can lead to a brighter beam and potentially better resolution in applications like oscilloscopes.
- Safety:
It's crucial to remember that high voltages can be dangerous. When working with cathode ray tubes, always follow proper safety procedures and guidelines, especially when dealing with voltages above 300-400V.
Oh, this thread had the answer on page 3 page, @geotrig ...
The CRT Tube is not tied to a specific (110V or 240V) ...
I would presume because it's just a place to bounce electrons around or some shit! 😅
However, if if the ongoing discussion is frustrating you, then perhaps it might be good idea for you to utilise the 'ignore' button at the top? If not, I'm sure it's all great additional information, either way.
With regard to "over complicating this in your head" ... erm ... I'm not entirely sure that is possible with my tiny brain! 😅 ...
It is why I made the thread as simple as possible ... a yes / no as to whether or not a CRT Tube cares about whether the voltage used with whatever is feeding the CRT Tube is at 110V or 240V ... and the CRT Tube does not care.
All the shit that plugs into to it can be running at whatever voltage ... the CRT tube isn't bothered.
Essentially:
The CRT Tube is not tied to a specific (110V or 240V) ...
I would presume because it's just a place to bounce electrons around or some shit! 😅
However, if if the ongoing discussion is frustrating you, then perhaps it might be good idea for you to utilise the 'ignore' button at the top? If not, I'm sure it's all great additional information, either way.
With regard to "over complicating this in your head" ... erm ... I'm not entirely sure that is possible with my tiny brain! 😅 ...
It is why I made the thread as simple as possible ... a yes / no as to whether or not a CRT Tube cares about whether the voltage used with whatever is feeding the CRT Tube is at 110V or 240V ... and the CRT Tube does not care.
So the answer is that CRT Tubes are not tied to a specific voltage (like 110V or 240V).
All the shit that plugs into to it can be running at whatever voltage ... the CRT tube isn't bothered.
Essentially:
chatGPT
To estimate the required accelerating voltages (anode voltages) for CRTs across various screen sizes and horizontal scan frequencies (15 kHz, 24 kHz, 31 kHz), we can follow general principles used in CRT design. Anode voltage primarily affects beam focus and brightness and must increase with screen size and resolution.
Here’s a table summarizing the **typical ranges** of kilovolts required for each configuration:
These are **approximate values**, as actual designs vary by manufacturer, tube phosphor type, and intended usage (arcade, TV, professional video monitor, etc.).
As a rule of thumb:
- **Larger tubes** need **higher voltages** to maintain image brightness and sharp focus.
- **Higher frequencies (resolutions)** require **more precise beam control**, often necessitating higher voltages and better deflection circuits.
Want to dive deeper into how these voltages influence image clarity or how arcade and broadcast CRTs were engineered to push performance?
To estimate the required accelerating voltages (anode voltages) for CRTs across various screen sizes and horizontal scan frequencies (15 kHz, 24 kHz, 31 kHz), we can follow general principles used in CRT design. Anode voltage primarily affects beam focus and brightness and must increase with screen size and resolution.
Here’s a table summarizing the **typical ranges** of kilovolts required for each configuration:
These are **approximate values**, as actual designs vary by manufacturer, tube phosphor type, and intended usage (arcade, TV, professional video monitor, etc.).
As a rule of thumb:
- **Larger tubes** need **higher voltages** to maintain image brightness and sharp focus.
- **Higher frequencies (resolutions)** require **more precise beam control**, often necessitating higher voltages and better deflection circuits.
Want to dive deeper into how these voltages influence image clarity or how arcade and broadcast CRTs were engineered to push performance?
CMYKhazi-Dan
Saikyo Style 💪
Put me down for three of these @eliotcole 👍Thank you, I see. It's an interesting discussion.
I was thinking maybe you were re-starting CRT production from your garden shed or something
Will do, @CMYKhazi-Dan !
Only if you promise to fite me at CVS2 on fightcade sometime 😏
Cheers for this, @Alpha1 ... I do not take information from AI, however I will just assume that this backs up the knowledge based responses, earlier, that a CRT Tube does not care about a mains voltage of 110V or 240V ... thanks again for the response. 🙂
Only if you promise to fite me at CVS2 on fightcade sometime 😏
Cheers for this, @Alpha1 ... I do not take information from AI, however I will just assume that this backs up the knowledge based responses, earlier, that a CRT Tube does not care about a mains voltage of 110V or 240V ... thanks again for the response. 🙂