Summary
Output pentode with a high gain, designed to be driven directly from the detector in radios.
6.3 V indirectly heated cathode.
The EL33, EL33A and EL33B were identical electrically, differing only in the presence or absence of metallisation around the bottom of the bulb and the pin it was connected to.
Manufacturer: Mullard, England.
Physical Description
Tall shouldered glass bulb on 7 pin octal base. Red metallised screening band around bottom of bulb and part of base.
More Information
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Acquisition Information
Unknown Acquisition Method from Unknown Source - Likely Donation, 06 Sep 1971
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Manufacturer
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Inscriptions
Bulb: MADE IN GREAT BRITAIN Base: PHILIPS/Miniwatt/EL33B/1007/512 Branded 'Philips' for sale in the Australian market, the 'Made in Great Britain' inscription indicates that it was manufactured in one of the Mullard factories in the UK.
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Type of item
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Overall Dimensions
122 mm (Length), 44 mm (Outside Diameter)
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