germanium point contact diode

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Germanium point contact diode Royalty Free Stock Photo
Germanium point contact diode Royalty Free Stock Photo
Closeup of old germanium point-contact diode in sealed glass tube Royalty Free Stock Photo
Retro point-contact diode with germanium crystal in glass tube and capacitors on PCB Royalty Free Stock Photo
Vintage semiconductor germanium diode with crystal detector inside welded glass tube Royalty Free Stock Photo
   
   
Germanium point contact diode
   
   
   
   
   
   
   
Construction of EFD 108 Point contact Germanium diode, used in old instruments as mixer and detector.


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