Items tagged thermionic electron valves in MV Collections
Search the collections
Items per page: 10 50 (showing 41 - 50) 629 items
-
Electronic Valve - Marconi, Triode, Type R, c1918
General purpose high vacuum ("hard") triode developed during World War 1, based on the French TM valve. Manufacturer: Edison Swan Electric Co. Ltd. For Marconi's Wireless Telegraph Co. ...
Images: 1 -
Electronic Valve - Marconi Osram, Triode, Type R.5V, 1918-1919
General purpose triode developed at the end of WW 1 (1914 - 1918). Similar to the R type. The description of this valve on the British National Valve Museum Website says: ?The MOV type ...
Images: 1 -
Electronic Valve - Lumos, Triode, No Type Number, c1922
Early triode. Manufacturer: Lumos, France. 3 to 4 volt directly heated cathode with mesh anode. Anode voltage is 40 to 80.
Images: 1 -
Electronic Valve - Mullard, Triode, Type DFA1, circa 1925
Triode, manufactured by Mullard in Great Britain, used for power amplification at audio frequency. 5.0 Volt directly heated cathode.
Images: 1 -
Electronic Valve - Western Electric, Triode, Type 215A, 1919-1930s
Low power consumption triode developed just after the end of WW 1. Known as a ?Peanut tube?.Valve is contained in manufacturer's box. Manufactured by: Western Electric, USA. This valve ...
Images: 1 -
Electronic Valve - Ken-Rad, Pentode, Type 1A4P, 1930s
A radio frequency pentode, manufactured by Australian Wireless Valve Company in Australia, but branded Ken-Rad, introduced in the erly 1930s. and used in radios. It had a 2 Volt directl ...
From: Sydney, Australia Images: 1 -
Electronic Valve - Philips, Triode, Type C606, circa 1926
Triode, made by Philips in Holland, used as a Class A power output amplifier. 6.0 Volt directly heated cathode.
Images: 1 -
Electronic Valve - MO Valve Co, Beam Tetrode, Type KT44, early 1940s
Beam Tetrode. Used as a television power amplifier. This valve was designed for use as a horizontal deflection amplifier in television receivers in 1939. It was used during the war in r ...
Images: 1 -
Electronic Valve - Philips, Double Diode Triode, Type 1B5/25S, circa 1935
Double diode triode, used as a Class A audio amplifier, made by Philips in USA. 2.0 Volt directly heated cathode.
Images: 1 -
Electronic Valve - Mullard, Tetrode, Type PM12A, circa 1932
Tetrode, intended for use as a radio frequency amplifier (Class A R. F.). Manufactured by Mullard in England in the early 1930s. Similar to Philips B262. 2 volt directly heated cathode.
Images: 1
