One of Fleming's first thermionic diode valves, 1889
1889
Transistor, early British Experimental Device from Pye Radio Research Labs
Early junction transistor (B.T.H.), c.1953
One of Fleming's first thermionic diode valves, 1889
1889
Submarine repeater valve, 1950-1960
1950-1960
E.S.75 wireless valve, 1883-1930
1883-1930
Mullard EF9 VM RF pentode valve (McVitie Weston valve collection), 1939
1939
Mullard T.H.4 radio valve, 1936
1936
Submarine repeater pentode P.O. type 10P, 1950-1970
195-1970
Mullard video output pentode, T.S.P.4, 1920-1936
1920-1936
Mazda QP.240 battery double output pentode valve (McVitie Weston valve collection), 1935
1935
S.215 dummy valve, 1920-1929
1920-1929
Fotos triode valve with two top caps (McVitie Weston valve collection), 1916-1972
1916-1972
Loud speaker valve type L.S.5. W/T, 1923
1923
Mazradia E4M triode valve (McVitie Weston valve collection), 1910-1960
1910-1960
Cossor OM6 pentode valve (McVitie Weston valve collection), 1925-1946
1925-1946
RCA 955 Acorn UFH triode vale (McVitie Weston valve collection), 1935
1935
Ostar-Ganz general-purpose triode valve (McVitie Weston valve collection) 1906-1972
1906-1972
Siemens & Halske AG radio valve, 1884-1936
1884-1936
CV1025 triode, 1906-1965
1906-1965
RCA Radiotron 35 VM RF pentode valve (McVitie Weston valve collection), 1931-1972
1931-1972
De Forest audion 1906-1915
1906-1915
De Forest Audion soft detector triode (McVitie Weston valve collection), 1906-1972
1906-1972
Magnetron block
General Electric CA101 Pilotron triode (McVitie Weston valve collection), 1918
1918
AF triode valve (McVitie Weston valve collection), 1906-1972
1906-1972
Western Electric 717A pentode, 1926-1966
1926-1966
VT60A triode 807 valve (McVitie Weston valve collection), 1906-1972
1906-1972
Thorpe 4-electrode valve (McVitie Weston valve collection) 1924
1924
Osram W30 VM RF catkin pentode valve (McVitie Weston valve collection), 1935-1972
1935-1972
CV525 pentode, 1924-1965
1924-1965
Sylvania 1LA6 frequency changer valve, 1931-1966
1931-1966
CV1092 diode, 1904-1965
1904-1965
Nelson multi A valve (McVitie Weston valve collection), 1920-1930
1920-1930
Raytheon 6D6 VM RD pentode valve (McVitie Weston valve collection), 1934-1972
1934-1972
One of Fleming's first thermionic diode valves, 1889
1889
First sealed-off travelling wave tube, 1945-1946
1945-1946
Sargrove sprayed circuit radio receiver production prototype, 1936-1948
1936-1948
Radio valve, 1936-1939
1936-1939
Mullard VP13C thermionic valve, 1934-1988
1934-1988
Marconi Osram DE 5b radio valve, 1920-1937
1920-1937
DA 60 RF triode valve, 1929-1972
1929-1972
Mullard PM6D output triode valve (McVitie Weston valve collection), 1929-1972
1929-1972
Cosmos DE.11 general-purpose triode valve (McVitie Weston valve collection), 1924
1924
Collection of early valves, 1915-1945
1915-1945
Submarine-repeater pentode, P.O. type 6P10, 1950-1970
1950-1970
Post Office PO/VA No. 2 triode valve (McVitie Weston valve collection), 1906-1972
1906-1972
FE1 valve, 1920-1966
1920-1966
Amplifying valve type V24, 1920-1922
1920-1922
L.S.2 radio valve, 1920-1938
1920-1938