▼ Menu

    
Extras ▼

The EZ80 full wave rectifier was found in many broadcast receivers and domestic audio equipment 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.

As a full wave rectifier each anode would conduct in turn when connected to either end of a grounded centre tapped mains transformer.

The EZ81 is pin compatible but rated at 160 mA.

Two identical anodes on a common cathode tube. One as an M shape and the other at right angles as a W shape.

The cathode is coated over the whole length and not as two sections surrounded by an anode.

The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 58 mm tall.

References: Data-sheet & ¹⁰⁴⁰. Type EZ80 was first introduced in 1954. See also 1954 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.