Mullard describe the EZ41 full wave rectifier as being primarily for use in car radio receivers. This exhibit was made in Great Britain and carries the Philips brand. In the UK the Philips factories were Mullard.
In the EZ41 full wave rectifier we see the move from all glass with a base spigot and metal skirt, to a complete all glass design where the pins are still equi-spaced around the pin circle, but the skirt is a thickened region of the envelope and the locating device is a pip moulded into the glass. This exhibit is an intermediate step where the evacuation tube has moved to the top and the spigot has gone. The metal skirt with locating pip remains.
The maximum reservoir capacitor is 50 µF and the device must have a minimum series resistance of 325 Ohms.
The anodes are mounted one above the other separated by a mica disc. Each anode is + shaped to give maximum radiating area. The locating pip is clearly visible on the skirt.
Side view.
The thin glass tube envelope is 20 mm in diameter and excluding the B8A base pins, is 53 mm tall.
