0Z4G / OZ4G RCA

COLD CATHODE FULL WAVE RECTIFIER TUBE

0Z4 and 0Z4G are mainly used for vibrator type B-power supplies for automotive receivers. Uses a starting electrode and an ion-heated cathode. RF filter circuits near the tap terminals are required to reduce rectifier noise. The 0Z4 shell and external shield of the 0Z4G must be grounded.
Continuous current from 30 to 90 mA.

Originally developed by Raytheon and advertised in Radio Engineering in November 1935. It originally had a four-pin octal base. The 0Z4 was re-registered with RCA on 2 January 1961, with minor changes to the specification.