NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

76
Triode Detector Amplifier

EIA Base & Outline

EIA Base: 5AEIA Bulb: 12-5

Substitute Data

Substitutes ................................... 37
Source ........................................ RCA RC-13 - 1937

Application

Glass type used as voltage amplifier or detector in radio receivers. Requires five-contact socket.

Mechanical Data

Bulb .......................................... ST-12
Base Type ..................................... Small 5-Pin
EIA Outline ................................... 12-5
EIA Base ...................................... 5A
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.5 pf
Output ........................................ 2.5 pf
Grid to Plate ................................. 2.8 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 250 V
Plate Current ................................. mA
Grid Current .................................. mA
Cathode Current ............................... mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. Ω
Self Bias .................................. Ω
Bulb Temperature (At Hottest Point) ........... °C

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -13.5 V
Amplification Factor .......................... 13.8
Plate Resistance (approx) ..................... 9500 Ω
Transconductance .............................. 1450 µMho
Plate Current ................................. 5 mA

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ -5 V
Amplification Factor .......................... 13.8
Plate Resistance (approx) ..................... 12K Ω
Transconductance .............................. 1150 µMho
Plate Current ................................. 2.5 mA

A horizontal ribbon.

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A horizontal ribbon.

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Fri, 30 Sep 2022 05:29:22 -0700