5642: Difference between revisions
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[http://w140.com/5642.pdf 5642 datasheet] | [http://w140.com/5642.pdf 5642 datasheet] | ||
[[Category:Diode tubes]] | |||
Revision as of 17:32, 8 May 2014
The 5642 is a directly-heated high-voltage rectifier tube. 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 has its own secondary winding on the HV transformer.