Sensibly equivalent¶ to:
The EBC3 is a receiving valve of double diode triode construction. It would be used as detector and AGC detector as well as first audio amplifier stage in a superhet receiver.
The base is of the eight side contact variety. These bases were greatly disliked by UK engineers as the valves did not stay properly in place and the contacts oxidized causing intermittent faults. Mullard released this valve in an IO based version as well as a result of this market pressure. This is the EBC33.
The reverse has the words Made in Great Britain. Usually one finds the Ct8 based valves were made in Europe as the Ct8 was mainly found in continental sets.
The classic envelope is 30 mm in diameter and, excluding the Ct8 base pins, is 85 mm tall.
References: Data-sheet & 1043. Type EBC3 was first introduced in 1938. See also 1938 adverts.
Absolute Maximum Operating Conditions¶
Updated January 06, 2022.