816
Rectifier · DHT · UX-4 · 1936
“Mercury vapor half-wave. Blue glow magic.”
Full-wave rectifier for vacuum tube power supply designs
GAIN0%
POWER0%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The 816 is a directly-heated rectifier from RCA·Sylvania, introduced around 1936. Commonly used in rectifier applications. Mercury vapor half-wave. Blue glow magic.
APPLICATIONS
Power supply rectification
Generic rectifier rectifier stage
HISTORY
Introduced1936ManufacturerRCA·SylvaniaEquivalentsVT-216
Pre-WarSPECIFICATIONS
Heater Voltage2.5V
Heater Current2A
Max Plate Voltage1500V
Max Power—
Sensitivity—
Gain Factor—
Internal Impedance—
PinoutUX-4
Era1936
RaritySought-after
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.