128: Difference between revisions

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The Tektronix Type 128 is a power supply for Type [[P500CF]] cathode-follower probes.
The '''Tektronix Type 128''' is a power supply for Type [[P500CF]] cathode-follower probes.
It was [[introduced in 1958]].  It provides two voltages to the probe: regulated
It was [[introduced in 1958]].   
+120V DC, and unregulated +6.3V DC.  Low voltage rectification is done by a
 
It provides two voltages to the probe: regulated
+120 V DC, and unregulated +6.3 V DC.  Low voltage rectification is done by a
[[selenium_rectifiers|selenium rectifier]].  Higher voltage rectification is done
[[selenium_rectifiers|selenium rectifier]].  Higher voltage rectification is done
by a [[6X4]] tube.  The voltage reference for the +120V supply is produced by
by a [[6X4]] tube.  The voltage reference for the +120 V supply is produced by
a [[5651]] tube.
a [[5651]] tube.


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[[Category:Accessories]]
[[Category:Accessories]]
[[Category:Introduced in 1958]]

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