Half Wave Rectifier
The 4B31 is a high power half wave rectifier that was
used for Radar.
Two separate cathode assemblies are located within the
anode cavity. The latter has additional fins to aid
cooling. The ceramic insulators point to the high voltage
design.
As is common the anode voltage is quoted in terms of
maximum Peak Inverse Voltage as not all input signals
are sinusoidal.
The wide glass tube envelope is 60 mm in diameter and
excluding the special large B4 style base pins, is 147
millimeters tall.
Electrical Data:
Filament
Vf ....................5 Volts
If.................5.25 Ampere
Prefered Substitutes ................. RK4B31, CV3510