TubeDatabase
  • Tubes
  • Testers
  • Companies
  • Submit
  • About

Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
DisclaimerA–Z indexSubmit a tube

Tube-number record

7844

0 archive entries

7844 is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand RCA, year 1962, construction Beam tetrode / beam power, socket Coaxial, maximum plate voltage 1000 V, and maximum plate dissipation 180 W. The archive does not yet hold a photographed example of this type.

BrandRCA
ClassBeam Power Tube
BaseCoaxial
Filament
6.3 V @ 2.1 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeCeramic-Metal
SectionsSingle

Filament / Heater

Heater NotesUnipotential Cathode; 60 sec minimum heating time

Absolute Maximum Ratings

Plate Voltage1000 V
Plate Dissipation180 W
Grid 2 Voltage300 V
Grid 1 Voltage-100 V
Cathode Current180 mA

Audio Performance

Power Output140 W
Key Features
  • Ceramic-Metal Seals
  • Coaxial-Electrode Structure
  • Conduction Cooled
  • Integral Conduction Cylinder
  • High frequency operation up to 2000 Mc

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
AF Power Amplifier Class AB1 (Push-Pull)850 V——18100 mA
AF Power Amplifier Class AB2 (Push-Pull)850 V——18177.5 mA
RF Power Amplifier Class C (1215 MHz)900 V———170 mA

Application Notes

The conduction cylinder must be thermally coupled to a heat sink. Heater voltage should be reduced at high frequencies due to cathode back-bombardment.

Filters

0 tubes found

Manufacturers

Brands

    0 results