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The '''Tektronix Type 128''' is a power supply for Type [[ | The '''Tektronix Type 128''' is a power supply for up to two [[P500CF|Type P500CF]] or [[P170CF|Type P170CF]] cathode-follower probes. | ||
It was [[introduced in 1958]]. | It was [[introduced in 1958]]. | ||
It provides | 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. | ||
+120 V | |||
Low voltage rectification is done by a [[selenium_rectifiers|selenium rectifier]], plate voltage rectification by a [[6X4]] tube. | |||
The voltage reference for the +120 V supply is produced by a [[5651]] tube. | |||
==Links== | |||
* [http://w140.com/tek_128.pdf Tektronix 128 Manual (PDF)] | * [http://w140.com/tek_128.pdf Tektronix 128 Manual (PDF)] | ||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek 128 front.jpg | |||
Tek 128 front2.jpg | |||
Tek 128 right.jpg | |||
Tek 128 left.jpg | |||
Tek 128 rear.jpg | |||
Tek 128 manphoto.jpg|Catalog photo | |||
Tek 128 schematic.png|Schematic | |||
</gallery> | </gallery> | ||
[[Category:Accessory power supplies]] | [[Category:Accessory power supplies]] | ||
[[Category:Introduced in 1958]] | [[Category:Introduced in 1958]] | ||
Revision as of 13:12, 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.
Links
Pictures
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Catalog photo
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Schematic
