Summary
Designed for use as a cascode amplifier in television tuners. Known as ECC180 in Europe.
The cascode circuit uses two triodes with one as a common cathode stage feeding the other as a grounded grid stage. The cathode of the second stage is connected directly to the anode of the first stage so that the two triodes are in series.
The main advantage of the cascode circuit is that it gives the low noise of a triode without the need for neutralisation.
Manufacturer: Philips, Hendon South Australia
Physical Description
Tubular glass bulb with exhaust tip and 9 pin miniature base.
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, 1981
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Manufacturer
Philips Electrical Industries Pty. Ltd., Hendon, South Australia, Australia, 1962
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Inscriptions
Bulb: 6BQ7A/Miniwatt/MADE IN AUSTRALIA/ODC21 Paper label on bulb: 6BQ7A
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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
55 mm (Length), 20 mm (Outside Diameter)
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Keywords