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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]] | ||
{{Vacuum Tube | |||
The European type DY70 is very similar (with lower heater current). | |Type=Diode | ||
|Number=5642 | |||
|EuroNumber=DY70 (similar) | |||
|RussianNumber= | |||
|Part_nos=154-0051-00, 154-0079-00 | |||
|Description=directly-heated high-voltage rectifier | |||
|Used_in=360;453;504;506;513;515;516;533;533A;535;543;543A;543B;545;545A;545B;547;551;555;567;575;647 | |||
|Designers= | |||
}}. 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, 140 mA). | |||
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, typically a single loop of wire with extra silicone tube insulation. | on the HV transformer, typically a single loop of wire with extra silicone tube insulation. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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==Links== | ==Links== | ||
* [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | * [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | ||
* [[tube:5642|5642 @ radiomuseum.org | * [[tube:5642|5642]] / [[tube:dy70|DY70]] @ radiomuseum.org | ||
==Pictures== | ==Pictures== | ||