The EZ80 full wave rectifier was found in many broadcast receivers and domestic audio equipment.
Suited to the task, at 90 mA maximum current and with a required series resistance of 300 Ω to reduce the initial surge in charging the maximum 50 µF reservoir capacitor, each anode would conduct in turn when connected to either end of a grounded centre tapped mains transformer.
EZ80 is branded as Mullard but was made in Holland by the parent company Philips. Here the construction looks to be identical but it is branded Philips.
Two identical anodes on a common cathode, one inverted and rotated through 90 degrees.
As above but rotated.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 59 mm tall.
References: Data-sheet & 1040. Type EZ80 was first introduced in 1954. See also1954 adverts.
