HV transformers: Difference between revisions
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Inofficial second options is good cooling of high voltage transformer (It is testing by 556´s HV-transformer) | Inofficial second options is good cooling of high voltage transformer (It is testing by 556´s HV-transformer) | ||
The same HV transformer, part number 120-0308, is used in the [[543|543B]], [[544]], [[545|545B]], [[546]]and [[547]] . | The same HV transformer, part number 120-0308, is used in the [[543|543B]], [[544]], [[545|545B]], [[546]] and [[547]] . | ||
Chuck Harris, who frequents the Yahoo Tekscopes forum, has rebuilt several 120-0308 transformers with good results. | Chuck Harris, who frequents the Yahoo Tekscopes forum, has rebuilt several 120-0308 transformers with good results. | ||
Revision as of 09:45, 8 December 2014
In many classic scopes, the high voltage transformer that supplies the cathode, blanking, and anode voltages has a tendency to break down. This is mostly because of aging of the potting material used for the high-voltage windings. It will running very hot, because dielectric loss is too high. It is a thermal runaway.
Currently, the only options when this happens are to find a similar transformer from another scope, or to get a rewound transformer.
Inofficial second options is good cooling of high voltage transformer (It is testing by 556´s HV-transformer)
The same HV transformer, part number 120-0308, is used in the 543B, 544, 545B, 546 and 547 . Chuck Harris, who frequents the Yahoo Tekscopes forum, has rebuilt several 120-0308 transformers with good results.
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Inofficial seconds options: cooling with aluminium-block