Valve
[nb-NO]Description[nb-NO]
Fleming four-electrode valve. British patent 149, 422, 12 May 1919. (see also Fleming "Thermionic Valve). 2 pairs of anodes (nickel) arranged symetrically around filament. Used as a detector.
[nb-NO]Documentation[nb-NO]
- Thermionic Valve and its Development in Radiotelegraphy and Telephony
[nb-NO]Material[nb-NO]
[nb-NO]Dimensions[nb-NO]
[nb-NO]Creator[nb-NO]
Marconi Osram
Electronic and Electrical Engineering
[nb-NO]Object number[nb-NO]
LDUSC-EE-54
53
UCL Science and Engineering Collections
