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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)
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EL 1C vacuum tube outline illustration

Tube-number record

EL 1C

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EL 1C is a tube type in the TubeDatabase archive (class: Full-Wave Rectifier). Recorded specifications: brand ELECTRONS, INCORPORATED, year 1953, construction Other / special, base Plastic/Metal Bayonet, socket 4-pin, and maximum plate voltage 725 V. The archive does not yet hold a photographed example of this type.

BrandELECTRONS, INCORPORATED
ClassFull-Wave Rectifier
Base4-pin

Construction

Primary TypeOther / special
Rectifier TypeFull-Wave
EnvelopeGlass
Base MaterialPlastic/Metal Bayonet
SectionsDual Anode

Filament / Heater

MaterialTantalum Anodes

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Rectifier————1000 mA

Application Notes

The filament must be lit before drawing d-c. load current. The filament voltage should be phased so the a-c. voltage (with the tube out of the socket and some d-c. load connected) from pin #1 to pin #2 is lower than from pin #1 to pin #3. This phasing of filament voltage relative to anode voltage insures a lower arc drop and somewhat longer life.

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    Warm-up Time20s

    Absolute Maximum Ratings

    Plate Voltage725 V
    Cathode Current1000 mA

    Audio Performance

    Key Features
    • Tantalum Anodes
    • Xenon Gas Filling
    • Medium 4-pin bayonet base