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515: Difference between revisions
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The −150 V supply is regulated by a [[6AU5]] tube. The voltage reference for the −150 V supply is a [[5651]] tube. | The −150 V supply is regulated by a [[6AU5]] tube. The voltage reference for the −150 V supply is a [[5651]] tube. | ||
The 515 and 515A use [[selenium rectifiers]]. A kit was later made | The 515 and 515A use [[selenium rectifiers]]. A kit was later made available for converting them to silicon rectifiers for improved reliability. | ||
Starting at serial number 4424, the 515A used the [[120-142]] power transformer, the same part that is used in the [[516]]. | Starting at serial number 4424, the 515A used the [[120-142]] power transformer, the same part that is used in the [[516]]. | ||