NJ7P SQL Tube Database Query

A horizontal ribbon.

Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.

A horizontal ribbon.

21JZ6
Beam Power Tube

EIA Base & Outline

EIA Base: 12GD
Source ........................................ RCA RC-29 - 1975

Application

Duodecar type used as horizontal-deflection amplifier in color tv rceivers. Requires duodecar 12-contact socket.

Duodecar type used as horizontal-deflection amplifier in color tv rceivers. Requires duodecar 12-contact socket.

Mechanical Data

EIA Base ...................................... 12GD

Electrical Data

Heater Voltage ................................ 21 V
Heater Current ................................ 0.45 A

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 770 V
Grid No. 2 Voltage ............................ 220 V
Plate Dissipation ............................. 18 W
Grid No. 2 Dissipation ........................ 3.5 W

Pentode
Plate Voltage ................................. 770 V
Grid No. 2 Voltage ............................ 220 V
Plate Dissipation ............................. 18 W
Grid No. 2 Dissipation ........................ 3.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 130 V
Grid No. 2 Voltage ............................ 130 V
Grid No. 1 Voltage ............................ -20 V
Plate Resistance (approx) ..................... 9.9K Ω
Transconductance .............................. 9000 µMho
Plate Current ................................. 46 mA
Grid No. 2 Current ............................ 1.8 mA

Class A Amplifier
Plate Voltage ................................. 130 V
Grid No. 2 Voltage ............................ 130 V
Grid No. 1 Voltage ............................ -20 V
Plate Resistance (approx) ..................... 11K Ω
Transconductance .............................. 9100 µMho
Plate Current ................................. 50 mA
Grid No. 2 Current ............................ 1.75 mA

Hortz Defl Amplifier
DC Plate Supply Voltage ....................... 770 V
Peak Positive-Pulse Plate Voltage ............. 6500 V
Peak Negative-Pulse Plate Voltage ............. -1500 V
DC Grid No. 3 Voltage ......................... 220 V
DC Grid No. 2 Voltage ......................... -330 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 230 V
Average Cathode Current ....................... 800 mA

A horizontal ribbon.

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

Please enter the tube number:

This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

Other Tube Search Engines:
Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

A horizontal ribbon.

(c) 1994-2021 by William A. Beech, NJ7P

Tue, 28 Jun 2022 02:25:05 -0700