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* [[Media:070-063.pdf|Tektronix Type 128 manual]] (PDF) | * [[Media:070-063.pdf|Tektronix Type 128 manual]] (PDF) | ||
* [[Media:Tek 128 dummy load.pdf|Tektronix Type 128 Dummy Load]] | |||
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The '''Tektronix Type 128''' is a power supply for up to two [[P500CF|Type P500CF]] or [[P170CF|Type P170CF]] cathode-follower probes. | The '''Tektronix Type 128''' is a power supply for up to two [[P500CF|Type P500CF]] or [[P170CF|Type P170CF]] cathode-follower probes. | ||
Latest revision as of 15:56, 20 November 2022
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.
Pictures
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Catalog photo
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Schematic
