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5642: Difference between revisions
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[[File:Apollo 5642 tube.jpg|thumb|300px|right|Apollo 5642 tube]] | [[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. | ||
The European type DY70 is very similar (with lower heater current). | |||
It is used in the CRT cathode and post-deflection acceleration supplies in many Tektronix scopes. | 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 | In typical CRT circuits, the filament/cathode leads of each 5642 have their own secondary winding | ||
on the HV transformer. | on the HV transformer. | ||
Tek part number: 154-0051-00 | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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{{EndSpecs}} | {{EndSpecs}} | ||
== | ==Links== | ||
* [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | * [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | ||
* [[tube:5642|5642 @ radiomuseum.org]] | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek 516 hvps1.jpg|Three 5642s in a [[516]] HV supply | Tek 516 hvps1.jpg|Three 5642s in a [[516]] HV supply | ||