Tube-number record
7977A
0 archive entries
7977A is a tube type in the TubeDatabase archive (class: NIXIE® Tube). Recorded specifications: brand Burroughs Corporation, construction Other / special, socket Magnal, and maximum plate voltage 170 V. The archive does not yet hold a photographed example of this type.
BrandBurroughs Corporation
ClassNIXIE® Tube
BaseMagnal
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsNumerical Indicator
Filament / Heater
Absolute Maximum Ratings
Plate Voltage170 V
Cathode Current2 mA
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Numerical Indicator Test Conditions | 170 V | — | 15000 | — | 1.05 mA |
Application Notes
The tube is intended for use as a direct in-line readout device in areas of low or dark ambient light. A supply voltage of 200 volts or more is recommended to assure proper operation at temperature extremes.
Datasheets
Datasheet: 7977A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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