NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

38HE7
Diode - Beam Power Tube

EIA Base & Outline

EIA Base: 12FS

Substitute Data

Substitutes ................................... 38HK7
Source ........................................ RCA RC-29 - 1975

Application

Duodecar type used in tv receiver applications. The diode is used for damper service and the beam power unit for horizontal-deflection amplifier service. Requires duodecar 12-contact socket.

Mechanical Data

EIA Base ...................................... 12FS

Electrical Data

Heater Voltage ................................ 37.8 V
Heater Current ................................ 0.45 A

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 130 V
Grid No. 2 Voltage ............................ 130 V
Grid No. 1 Voltage ............................ -22 V
Plate Resistance (approx) ..................... 6.2K Ω
Transconductance .............................. 8800 µMho
Plate Current ................................. 60 mA
Grid No. 2 Current ............................ 2.8 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 29 Nov 2022 18:12:55 -0700