Tube
The K8/D127-A2 is a part of the Kraftberg tube, a type of electron tube. It is a three-electrode, glass-enveloped electron device with a hexagonal shape. It is used as an amplifier in radios, televisions, and other electronic equipment. The part is composed of an anode, a grid, and a cathode. The anode is made of amplified metal with a filament mounted inside that emits electrons. The grid is composed of metal and positioned between the anode and the cathode; it is used to control the flow of electrons. Finally, the cathode is also made of metal and its purpose is to provide an electron source. Together, these three elements make up the K8/D127-A2 part of the Kraftberg tube.