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. | ||
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on the HV transformer. | on the HV transformer. | ||
== | Tek part number: 154-0051-00, 154-0079-00 | ||
{{BeginSpecs}} | |||
{{Spec|Heater|1.25 V, 200 mA }} | |||
{{Spec|Peak inverse volrage | 10 kV}} | |||
{{Spec|Peak plate current | 250 μA }} | |||
{{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 | ||
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Apollo 5642 5.jpg | Apollo 5642 5.jpg | ||
Apollo 5642 6.jpg | Apollo 5642 6.jpg | ||
Tek-RM35A-HV-Section.jpg | 5642s in a 535/RM35A HV Supply | |||
</gallery> | </gallery> | ||
[[Category:Diode tubes]] | [[Category:Diode tubes]] | ||
Revision as of 09:28, 28 November 2018
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. In typical CRT circuits, the filament/cathode leads of each 5642 have their own secondary winding on the HV transformer.
Tek part number: 154-0051-00, 154-0079-00
Key Specifications
| Heater | 1.25 V, 200 mA |
|---|---|
| Peak inverse volrage | 10 kV |
| Peak plate current | 250 μA |
