5642: Difference between revisions
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[[File: | [[File:Apollo 5642 tube.jpg|thumb|300px|right|Apollo 5642 tube]] | ||
The '''5642''' is a directly-heated high-voltage rectifier tube. It has three flexible lead connections and is intended to be soldered into the circuit. | The '''5642''' is a directly-heated high-voltage rectifier tube. It has three flexible lead connections and is intended to be soldered into the circuit. | ||
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* [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | * [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | ||
<gallery> | |||
Tek 516 hvps1.jpg|Three 5642s in a [[516]] HV supply | |||
Apollo 5642 tube.jpg | |||
</gallery> | |||
[[Category:Diode tubes]] | [[Category:Diode tubes]] | ||
Revision as of 16:33, 17 August 2017
The 5642 is a directly-heated high-voltage rectifier tube. It has three flexible lead connections and is intended to be soldered into the circuit.
- filament volatage = 1.25 V
- filament current = 200 mA
- peak inverse volrage = 10 kV
- peak plate current = 250 μA
It is used in the CRT cathode and post-deflection acceleration supplies in many Tektronix scopes. In typical CRT circuits, the filament/cathode leads of each 5642 have their own secondary winding on the HV transformer.
Data Sheets
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Three 5642s in a 516 HV supply
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