5r4gy Fivre tube Valve Gleichrichter Röhre

Full wave vacuum rectifier Power

Vintage valve made in Italy

year 1940's

Brown base

DD getter

Long smooth plate

Dark grey plate

Hanging filament

Full mica on top

yellow label on glass

Old production

fully tested good emission

5R4GY = CV717
Similar tube Other shape (e.g. bulb type):  5R4G ; 5R4GYA ; 5R4GYB ; 5R4WGY
Sub tube :   CV684
Multiple differences or of other kind:  5R4GYS
First informations 10.Sep.1942 : Electron Tube Registration List 302
Socket    Octal K8A
Filament Heater    Vf 5 Volt / If 2 Ampere / Direct
Va <2.5kV piv, Ia pk <0.65;
Typically 350V rms 270mA mean; 1000V rms 120mA mean with Capacitative input. (MOV data 1961)
Dimensions (LxAxP) incl.pins/tip 51 x 130 x mm / 2.01 x 5.12 x inch

box 61