10-04-2024, 09:33 PM
Hi,
Thank you for the interesting information on the number of converters. Commenting on them could be the subject of a new post, so I am not continuing this thread anymore. I will only add that I own 4 devices myself. The designers of these devices had a lot of determination. Without these little boxes the old English TVs would be a dead relic.
Unfortunately I don't have any information on the number of CT-100s in operation, certainly not a large number. Today they do not appear on sale very often. Their price is now reaching the price of pre-war TV sets. Transporting such large units to Europe is troublesome. The restoration of the 15GP22 may therefore make financial sense. Personally, however, I treat it as a technological challenge. The cold process may raise questions about the quality of the vacuum, but I am optimistically assuming that the improved efficiency of modern vacuum pumps will compensate for the heating of the CRT. My project also assumes disassembling the gun, repairing and reassembling with cold sealing. Another version is to mount the whole gun from another CRT and a third version is to use a completely new gun - provided its performance is acceptable. Unfortunately, not many new guns have survived to the present day and there is no way to optimally match them. Substances resistant to higher temperatures can be used to seal the CRT - the CRT heats up. Periodic vacuum correction is not an option in my opinion. The rapid pressure changes that could occur when reconnecting the pump could damage the CRT. My 15GP22 unfortunately has an open heater circuit.
Adam
Thank you for the interesting information on the number of converters. Commenting on them could be the subject of a new post, so I am not continuing this thread anymore. I will only add that I own 4 devices myself. The designers of these devices had a lot of determination. Without these little boxes the old English TVs would be a dead relic.
Unfortunately I don't have any information on the number of CT-100s in operation, certainly not a large number. Today they do not appear on sale very often. Their price is now reaching the price of pre-war TV sets. Transporting such large units to Europe is troublesome. The restoration of the 15GP22 may therefore make financial sense. Personally, however, I treat it as a technological challenge. The cold process may raise questions about the quality of the vacuum, but I am optimistically assuming that the improved efficiency of modern vacuum pumps will compensate for the heating of the CRT. My project also assumes disassembling the gun, repairing and reassembling with cold sealing. Another version is to mount the whole gun from another CRT and a third version is to use a completely new gun - provided its performance is acceptable. Unfortunately, not many new guns have survived to the present day and there is no way to optimally match them. Substances resistant to higher temperatures can be used to seal the CRT - the CRT heats up. Periodic vacuum correction is not an option in my opinion. The rapid pressure changes that could occur when reconnecting the pump could damage the CRT. My 15GP22 unfortunately has an open heater circuit.
Adam
