82
82 has no equivalent designation confirmed by the archive.
Description
The 82 is a full-wave mercury-vapor rectifier tube of the hot-cathode type. It has a low and practically constant voltage drop of only about 15 volts for any current drain up to the full emission of the filament. The tube is not interchangeable with any other rectifier type.
Construction
The base of the 82 is of the medium 4-pin type. The filament is of the coated type and is intended for AC operation.
Ratings
The rated filament voltage is 2.5 volts, and the filament circuit must be capable of carrying 3 amperes continuously. The maximum A.C. voltage per plate (RMS) is 500 volts.
Applications
The 82 is recommended for supplying d-c power to receivers, particularly those employing Class B audio amplification.
Operating Characteristics
Under operating conditions, the 82 has a bluish-white glow, caused by the mercury vapor, which fills the space within the plates and extends to some degree into the surrounding space outside the plates.
Original manufacturer datasheets for 82, hosted by Frank Philipse's Electron Tube Data sheets.
| Manufacturer | Designation | Datasheet |
|---|---|---|
| Tung-Sol | 82 | PDF (109 KB) |
| RCA | 82 | PDF (96 KB) |
| Sylvania | 82 | PDF (85 KB) |
Documents held here and used to write this page.
- FULL-WAVE MERCURY-VAPOR RECTIFIER