Items tagged thermionic electron valves in MV Collections
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Electronic Valve - Osram, Tuning Indicator, Type 6E5, 1936 to 1950.
"Magic Eye" tuning indicator, used in radios from the mid 1930s until the late 1940s. Manufactured for: Osram. (Probably by Philips). "Magic Eye" indicators provided a circular fluores ...
Images: 1 -
Electronic Valve - "Super Radiotron", Triode Pentode, Type 6BM8, 1960s.
Triode-pentode used as a voltage and audio output amplifier in radios and audio amplifiers, also used as a vertical deflection oscillator and amplifier in television receivers. Manufact ...
From: Sydney, Australia Images: 1 -
Electronic Valve - Philips, Double Diode Remote Cutoff Pentode, Type EBF35, circa 1950.
Double diode-pentode. Diode sections were used as detectors and the pentode section was mainly used as the intermediate frequency amplifier (Class A) in domestic radios. Manufactured by ...
Images: 1 -
Electronic Valve - Marconi Osram, Tetrode, Type MY235, 1929
Remote cut-off tetrode used as an RF amplifier in radios from 1929 until the early 1930s. Manufactured by Marconi Osram Company, England. This is an English made equivalent to the popul ...
Images: 1 -
Electronic Valve - Marconi Osram, Triode, Type HL610, 1929
Triode used as an amplifier and detector in radios from 1929 until the early 1930s. Manufactured by: M. O. Valve Company, England. This was similar to the L610 (ST 028689) but with twic ...
Images: 1 -
Electronic Valve - Unknown Manufacturer, Double Diode, Type 5Z4, circa 1940
Double diode used as full wave rectifier with 5 volt indirectly heated cathode. Manufacturer: Unknown (USA)
Images: 1 -
Electronic Valve - Raytheon, Triode, Type 6F5, 1935-1945
High-mu triode intended for resistance coupled audio amplification (Class A). Manufacturer Raytheon. The valve was designed for use in car radios, it was expensive. Bulb is made of stee ...
From: Newton, United States Images: 1 -
Electronic Valve - Osram, Triode, Type DEL610, 1927
Triode, used as a detector and amplifier (general purpose audio amplifying valve with amplification factor of 15). Manufacturer: Marconi Osram Valve Company, England. In 1929 the "DE" ( ...
Images: 2 -
Electronic Valve - Osram, Triode, Type L610, 1929
Triode, used as a detector and amplifier (Class A). Manufacturer: Marconi Osram Valve Company, England. Later version of DEL610. See: ST 028677 6 volt directly heated cathode.
Images: 1 -
Electronic Valve - De Forest Audion, Triode, Type DL5, circa 1926
De Forest Audion DL5 electronic valve. The L signifies that the base has long pins (UX style base). The tube used for detection and amplification in accumulator (rechargeable) powered r ...
From: Jersey City, United States Images: 1
