HV transformers: Difference between revisions

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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.  Currently the only option when this happens is to find a similar transformer from another scope.
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.  Currently the only option when this happens is to find a similar transformer from another scope.


The same HV transformer 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.

Revision as of 09:41, 12 July 2011

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. Currently the only option when this happens is to find a similar transformer from another scope.

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.