Summary
12sr7 triode, double diode, manufactured by RCA, Harrison, NJ, USA. The diodes in this valve were designed for use as the signal detector and automatic gain control rectifier in radio receivers, the low mu triode section was designed to be used as the audio amplifier following the detector. Equivalent to the 6SR7 except for the heater voltage of 6SR7 is 6 volt.
12.6 volt indirectly heated cathode at 150 ma. mutual conductance 1900. Amplification factor 16.
Physical Description
Base type: octal No. of pins in base: 8 Bulb shape: cylindrical Bulb material: metal Looks unused
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source, 03 Oct 1978
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Manufacturer
Radio Corporation of America (RCA), Harrison, New Jersey, United States of America, 1942
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Inscriptions
Bulb: (RCA logo) / U.S.N. / CRC 12SR7 / S3
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Brand Names
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
64 mm (Length), 33 mm (Outside Diameter)
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Keywords