vacuümtube
Vacuümtube, or vacuum tube, is an electronic device that controls electric current by modulating the flow of electrons in a vacuum. It was a fundamental building block in early electronics and was used for amplification, switching, and rectification in radios, televisions, computers, and communications equipment throughout much of the 20th century. The spelling vacuümtube appears in some European languages, where the term may be used interchangeably with vacuum tube.
A typical vacuum tube consists of a sealed envelope made of glass or metal, containing a heated
History and development span the invention of the vacuum tube in the early 1900s, beginning with Fleming’s
In summary, the vacuümtube was a crucial enabling technology of early electronics, whose legacy persists in