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514: Difference between revisions
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The +225 V supply uses three [[5V4G]] rectifier tubes in parallel. | The +225 V supply uses three [[5V4G]] rectifier tubes in parallel. | ||
Throughout its production run, a 'D' variant was available (514D, with the 'D' being stamped in by hand) which has a 24-section 250 ns lumped L-C [[delay line]]. | Throughout its production run, a 'D' variant was available (514D, with the 'D' being stamped in by hand on some models) which has a 24-section 250 ns lumped L-C [[delay line]]. | ||
There was also an 'A' version (514-A & 514-AD respectively), which appears to have been available in 1954. ''(How does the 514AD differ from the 514D?)'' | There was also an 'A' version (514-A & 514-AD respectively), which appears to have been available in 1954. ''(How does the 514AD differ from the 514D?)'' | ||