Thermionic Tube on Base ceramic This is part of a

This is part of a Van de Graaff generator

series and parallel circuits

making it a valuable organizational instrument in scientific and laboratory settings

and 6-dial options

Thermionic Tube on Base ceramic This is part of aA Thermionic Tube, also called an electron valve or electron tube, is an important device in electronic circuits, that combine rectification and signal amplification modulation functionality. This is commonly used in early electronics before semiconductors, still relevant for niche applications, vintage electronics restoration, and education. A. Diode on Base: The tube warms the cathode so electrons can flow one way and rectify the AC into DC with 2x