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| electronic:plasma:start [2018/05/12 23:19] – tony | electronic:plasma:start [2018/12/17 18:13] (current) – tony |
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| | {{:pilone.png |Cone icon by Fornax, CC-BY-SA 3.0, wikimedia commons}} ((PAGE UNDER CONSTRUCTION)) |
| <html><p style="text-align:right;">Published 12 May 2018</p></html> | <html><p style="text-align:right;">Published 12 May 2018</p></html> |
| <html><p style="text-align:center;"><b><font size="6">Gas Plasma Displays</font></b></p></html> | <html><p style="text-align:center;"><b><font size="6">Reusing Gas Plasma Displays</font></b></p></html> |
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| Occasionally I come across old gas plasma displays that I would like to use in projects. | Occasionally I come across old gas plasma displays that I would like to use in projects. |
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| ===== Overview ===== | ===== Overview ===== |
| | Nixie tubes and some early flat panel monochrome screens both use similar technology. They rely on gases being excited into a plasma state by high voltage and emitting visible light. Later 'plasma' colour TV screens use a similar discharge to produce ultra-violet light that then excites coloured phosphurs (red/green/blue) to produce coloured pixels. |
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| ===== Hardware description ===== | ===== Hardware description ===== |
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| Nixie tubes and some early flat panel monochrome screens both use similar technology. They rely on gases being exited into a plasma state by high voltage and emitting visible light. Later 'plasma' colour TV screens use a similar discharge to produce ultra-violet light that then excites coloured phosphurs (red/green/blue) to produce coloured pixels. Nixie tubes have electrodes shaped into symbols (eg '1','2', '3') or multiple segments (like numeric LED displays). Flat panel plasma displays have a matrix of cells that can be caused to discharge individually, and have electronics to drive columns of cells in a wave or scan across the panel, a bit like refreshing a CRT tube. | Nixie tubes have electrodes shaped into symbols (eg '1','2', '3') or multiple segments (like numeric LED displays). Flat panel plasma displays have a matrix of cells that can be caused to discharge individually, and have electronics to drive columns of cells in a wave or scan across the panel, a bit like refreshing a CRT tube. |
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| ===== Recovered plasma displays ===== | ===== Recovered plasma displays ===== |
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