128: Difference between revisions

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{{Instrument Sidebar
|manufacturer=Tektronix
|model=128
|class=Power supply
|series=
|summary=Probe power supply
|image=Tek 128 front.jpg
|caption=Tektronix Type 128
|introduced=1958
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-063.pdf|Tektronix Type 128 manual]] (PDF)
}}
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.
It was [[introduced in 1958]].   
It was [[introduced in 1958]].   
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Low voltage rectification is done by a [[selenium_rectifiers|selenium rectifier]], plate voltage rectification by a [[6X4]] tube.   
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.
The voltage reference for the +120 V supply is produced by a [[5651]] tube.
==Links==
* [[Media:070-063.pdf|Tektronix Type 128 manual (PDF)]]


==Pictures==
==Pictures==
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[[Category:Accessory power supplies]]
[[Category:Accessory power supplies]]
[[Category:Introduced in 1958]]

Revision as of 06:25, 18 August 2021

Tektronix 128
Probe power supply
Tektronix Type 128

Produced from 1958 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

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