NJ7P SQL Tube Database Query

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483
Low-Mu Power Triode

EIA Base & Outline

EIA Base: 4D
Source ........................................ RCA RC-15 - 1947

Application

Glass type used in output stage of radio receivers. Requires four-contact socket.

Mechanical Data

Bulb .......................................... ST-14
EIA Base ...................................... 4D

Electrical Data

Filament Voltage .............................. 5 V
Filament Current .............................. 1.25 A

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -60 V
Amplification Factor .......................... 3
Plate Resistance (approx) ..................... 1.75K Ω
Transconductance .............................. 1700 µMho
Plate Current ................................. 30 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 1.8 W

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Thu, 30 Jun 2022 03:51:55 -0700