Half-Wave Mercury-Vapor Rectifier
Diode ~ Edison giant Base.
Pulled From Working Equipment.
The National Labs or National Electronics 623 / NL-623
Vacuum tube is a half-wave mercury-vapor rectifier diode.
It is mounted on an Edison giant base.
The "NL" part number prefix stands for "National Labs".
The NL-623 is a sturdy rectifier tube designed especially
for industrial power rectifier applications up to 150
volts DC. It is mercury filled for efficiency, long life
and the agility to withstand high inverse voltage
Electrical Data:
Heater Voltage ................................ 2.5 V
Heater Current ................................ 20 A
Key Attribute Values:
Peak Inverse Voltage .......................500 Volts
Peak Anode Current .......................... 45 Amps
Average Anode Current ....................... 15 Amps
Maximum DC Output ........................... 15 Amps
Preferred Substitutes .........623, NL-623