The EZ90 miniature HT rectifier follows the normal pattern for a full wave device in that a common cathode is employed.
At 325-0-325 input to the rectifier this will give an HT rail higher than is required for most domestic receivers. Use for audio amplifiers and small transmitters is most probable, or driven at 250 volts for radio receivers.
See also6X4 from Brimar. The 12X4 has the same rectifier characteristics but a 12 Volt heater and was designed for car radio use.
The anodes are identical and mounted at right angles to one another with the second anode inverted.
The 6X4 Type designation and the inverted top anode.
The thin glass tube envelope is 18 mm in diameter and the length, excluding the B7G base pins, is 59 mm.