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A horizontal ribbon.

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A horizontal ribbon.

70L7
Rectifier - Beam Power Amplifier

EIA Base & Outline

EIA Base: 8AA
Source ........................................ RCA RC-15 - 1947

Application

Glass octal type used as a combined half-wave rectifier and output amplifier in ac/dc receivers. Requires octal socket.

Mechanical Data

EIA Base ...................................... 8AA

Electrical Data

Heater Voltage ................................ 70 V
Heater Current ................................ 0.15 A

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -7.5 V
Plate Resistance (approx) ..................... 15K Ω
Transconductance .............................. 7500 µMho
Plate Current ................................. 40 mA
Grid No. 2 Current ............................ 3 mA
Load Resistance ............................... 2K Ω
Power Output (approx) ......................... 1.8 W

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 02 Jul 2022 22:25:37 -0700