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547: Difference between revisions
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which tend to shift in characteristics as the instrument ages. | which tend to shift in characteristics as the instrument ages. | ||
The 547 uses the Tektronix [[154-0478-00]] CRT. | |||
A common problem with 547's is the [[hv_transformer|HV transformer]]. Rather than the wax used in older designs, | A common problem with 547's is the [[hv_transformer|HV transformer]]. Rather than the wax used in older designs, | ||
the transformer was potted in a new epoxy resin, which turned out to absorb moisture over time when used in humid | the transformer was potted in a new epoxy resin, which turned out to absorb moisture over time when used in humid | ||