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556: Difference between revisions
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The 556 was the last 500-series scope produced. | The 556 was the last 500-series scope produced. | ||
It was present in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1974.pdf 1974 catalog], but gone in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1975.pdf 1975 catalog]. | It was present in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1974.pdf 1974 catalog], but gone in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1975.pdf 1975 catalog]. (The dual-beam [[7844]] had been introduced in 1974.) | ||
{{MissingSpecs}} | {{MissingSpecs}} | ||
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===CRT Circuit === | ===CRT Circuit === | ||
The CRT in model 556 is the [[T5560]]. | |||
The CRT circuit of the 556 uses two HV transformers. | The CRT circuit of the 556 uses two HV transformers. | ||
The lower beam transformer ([[120-0432-00]]), T1301, produces: | The lower beam transformer ([[120-0432-00]]), T1301, produces: | ||
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* upper beam control grid (blanking) voltage: varies, about −2000 V | * upper beam control grid (blanking) voltage: varies, about −2000 V | ||
Each of the transformers is driven by its own independent oscillator using a [[6GF5]] power pentode. | |||
==Pictures== | ==Pictures== | ||