Summary
Electronic counting valve. Manufactured by Mullard, Mitcham, England. Used in Geiger counters and scintillation counters. Could count up to a rate of 1MHz, 50 times faster than the fastest neon types. 6.3 V indirectly heated cathode.
The item was donated by RMIT Radio Engineering.
Physical Description
Black cylinder with dome on one end, enclosing glass bulb with 26 pin base. Magnetic.
More Information
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Collecting Areas
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Manufacturer
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Inscriptions
On label: " Mullard ", " Serial No. ", " ET51 / BRITISH MADE " On base: 900/R5D
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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
80 mm (Height), 45 mm (Outside Diameter)
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Keywords
