Items tagged thermionic electron valves in MV Collections
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Electronic Valve - Philips, Octode, Type AK1, 1934-1938
Octode frequency changer used in radio receivers in the 1930s. 4 V indirectly heated cathode. Essentially equivalent to the side-contact type AK2 but fitted with an American style 7 pi ...
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Electronic Valve - AWV Radiotron, Heptode, Type 1C7G, 1936-1952
Heptode (pentagrid) frequency changer used in radio receivers from the late 1930s to the early 1950s. The main application was in 'farm radios' powered by batteries for use in areas wit ...
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Electronic Valve - Ken-Rad, Tetrode, Type 24A, 1939-1945
Tetrode used as an RF amplifier and anode-bend detector in early AC mains powered radios. Also occasionally used as an oscillator making use of the negative plate resistance obtained by ...
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Electronic Valve - AWV Radiotron, Dual Diode, Type 5Y3G, 1937-1945
High vacuum full-wave rectifier. This was the octal based version of the type 80 rectifier. After WW 2 (1939-1945), it was replaced by the 5Y3GT; the same valve in a smaller tubular bul ...
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Electronic Valve - Loewe, Diode, Type NG3020, circa 1939
Replace with: High voltage high vacuum half wave rectifier, used in an oscilloscope manufactured by Loewe Radio in 1939. 2 volt directly heated cathode. The last zero in the type numbe ...
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Electronic Valve - Brimar, Diode, Type 0C3, 1945-1960
Cold cathode gas filled diode used as a voltage regulator. Also known as VR-105 and VR105/30. The glow discharge in this valve maintains a constant voltage of 105 V over a current range ...
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Electronic Valve - Mazda, Triode, Type AC/P4, 1939-1944
Triode, originally designed for use in electrostatically deflected television receivers in the late 1930s. It was adopted by the military for use in radar displays in World War 2 (1939- ...
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Electronic Valve - Philips Miniwatt, Heptode, Type 6SA7GT, 1950-1960
6.3 volt indirectly heated cathode, manufactured by Philips, Holland. Heptode (pentagrid) used as a frequency changer in superheterodyne receivers.
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Hard Drive - Trevor Pearcey, circa 1994
Hard drive used by Trevor Pearcey, an Australian computing pioneer who designed CSIRAC, Australia's first computer. This drive was used later in Pearcey's career. Technical details: ...
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