Power supply problem on touchscreen contoller
I have an old IRIS 4d/35 system with touchscreen capabilities and display is CRT type.
Recently we upgraded the system to run on LCD displays where we needed to provide the touchscreen controller with a separate power supply since the power for the controller was previously drawn from the CRT power supply. However when a new switching power supply was used the touchscreen did not work. Reverting back to the supply from the CRT works flawlessly. The supplies required for the touchscreen controller are 12V, -12V and 5V. The CRT power supply had a common ground and so does the new switching power supply. Any idea what could be the problem with the new power supply. Any advise would be very much appreciated. |
Power supply problem on touchscreen contoller
Perhaps the switching supply is not able to supply enough current via one or
more outputs, and is shutting down. Many off the shelf supplies will deliver a hefty dose of 5v, much less in the way of +12v, and often way less than the +12v figure for the -12v. Gareth. wrote in message ... I have an old IRIS 4d/35 system with touchscreen capabilities and display is CRT type. Recently we upgraded the system to run on LCD displays where we needed to provide the touchscreen controller with a separate power supply since the power for the controller was previously drawn from the CRT power supply. However when a new switching power supply was used the touchscreen did not work. Reverting back to the supply from the CRT works flawlessly. The supplies required for the touchscreen controller are 12V, -12V and 5V. The CRT power supply had a common ground and so does the new switching power supply. Any idea what could be the problem with the new power supply. Any advise would be very much appreciated. |
Power supply problem on touchscreen contoller
I've checked on this and this is what I found.
The original power supply is proving 5V - 2A, +12V - 0.3A, -12V - 0.2A While the replacement power supply 5V - 4A, +12V - 2A, -12V - 0.5A Has the common ground of the +12V and +5V effect on the -12V in anyway? |
Power supply problem on touchscreen contoller
wrote in message ... I've checked on this and this is what I found. The original power supply is proving 5V - 2A, +12V - 0.3A, -12V - 0.2A While the replacement power supply 5V - 4A, +12V - 2A, -12V - 0.5A Has the common ground of the +12V and +5V effect on the -12V in anyway? Well the new power supply seems well capable, so either there is something you have missed common grounds, or perhaps its the power up sequence that might be wrong, and the various devices are not communicating/booting together properly. Dunno. Gareth. |
Power supply problem on touchscreen contoller
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Power supply problem on touchscreen contoller
wrote in message
... I have an old IRIS 4d/35 system with touchscreen capabilities and display is CRT type. Recently we upgraded the system to run on LCD displays where we needed to provide the touchscreen controller with a separate power supply since the power for the controller was previously drawn from the CRT power supply. However when a new switching power supply was used the touchscreen did not work. Reverting back to the supply from the CRT works flawlessly. The supplies required for the touchscreen controller are 12V, -12V and 5V. The CRT power supply had a common ground and so does the new switching power supply. Any idea what could be the problem with the new power supply. Any advise would be very much appreciated. Does the touchscreen use a high "static" voltage (ultimately via the CRT accelerating voltage) as part of its operation ? |
Power supply problem on touchscreen contoller
On Thursday, November 22, 2012 6:36:32 PM UTC+8, wrote:
I have an old IRIS 4d/35 system with touchscreen capabilities and display is CRT type. Recently we upgraded the system to run on LCD displays where we needed to provide the touchscreen controller with a separate power supply since the power for the controller was previously drawn from the CRT power supply. However when a new switching power supply was used the touchscreen did not work. Reverting back to the supply from the CRT works flawlessly. The supplies required for the touchscreen controller are 12V, -12V and 5V. The CRT power supply had a common ground and so does the new switching power supply. Any idea what could be the problem with the new power supply. Any advise would be very much appreciated. When we upgraded from CRT to LCD the touchscreen was upgraded at the same time. I suspect the problem is with the power supply as reverting back to the original solves the problem. |
Power supply problem on touchscreen contoller
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Power supply problem on touchscreen contoller
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Power supply problem on touchscreen contoller
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Power supply problem on touchscreen contoller
On Thursday, November 22, 2012 6:36:32 PM UTC+8, wrote:
I have an old IRIS 4d/35 system with touchscreen capabilities and display is CRT type. Recently we upgraded the system to run on LCD displays where we needed to provide the touchscreen controller with a separate power supply since the power for the controller was previously drawn from the CRT power supply. However when a new switching power supply was used the touchscreen did not work. Reverting back to the supply from the CRT works flawlessly. The supplies required for the touchscreen controller are 12V, -12V and 5V. The CRT power supply had a common ground and so does the new switching power supply. Any idea what could be the problem with the new power supply. Any advise would be very much appreciated. |
Power supply problem on touchscreen contoller
On Monday, November 26, 2012 3:57:47 AM UTC+8, Cydrome Leader wrote:
wrote: I have an old IRIS 4d/35 system with touchscreen capabilities and display is CRT type. somehow your post was stuck somewhere for about 15 years. not sure about the touch screen problem though. I have to ask- what is this thing still being used for?? Cydrome, the 4d/35 is being used on a flight simulator. The company is planning to replace the iris system but I would still have to maintain the old simulator. |
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