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==Links== | ==Links== | ||
* [ | * [[Media:070-063.pdf|Tektronix Type 128 manual (PDF)]] | ||
==Pictures== | ==Pictures== | ||
Revision as of 13:17, 30 October 2019
The Tektronix Type 128 is a power supply for up to two Type P500CF or Type P170CF cathode-follower probes. It was introduced in 1958.
It provides three DC voltages − regulated +120 V @ 25 mA, and two independent unregulated +6.3 V @ 150 mA circuits, one for each probe socket.
Low voltage rectification is done by a selenium rectifier, plate voltage rectification by a 6X4 tube. The voltage reference for the +120 V supply is produced by a 5651 tube.
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Catalog photo
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Schematic
