Keywords: Early bipolartransistor bottom.jpg en early construction of a bipolartransistor OC603 from Telefunken/TFK colour point is the collector terminal germanium chip is mounted via a hole in a metal sheet base terminal Early_bipolartransistor jpg 2009-08-16 23 34 UTC Early_bipolartransistor jpg Ulfbastel derivative work -< kmk >- <span class signature-talk >talk</span> Only bottom image of the siamese twins original Added a scale KaiMartin Early_bipolartransistor jpg Bipolar junction transistors Germanium transistors |