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6HD5
Beam Power Pentode

Base & Bulb ( GE - 1973)

Mechanical Data

Bulb .......................................... T-12
Outline ....................................... 12-59
EIA Base ...................................... 12ES

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 2.25 A

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 770 V
Grid No. 2 Voltage ............................ 220 V
Plate Dissipation ............................. 24 W
Grid No. 2 Dissipation ........................ 6.0 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -22 V
Plate Resistance (approx) ..................... 5000 Ω
Transconductance .............................. 10000 µ
Plate Current ................................. 65 mA
Grid No. 2 Current ............................ 4.0 mA

Characteristics and Typical Operation

Hortz Defl Amplifier
DC Plate Supply Voltage ....................... 135 V
Peak Negative-Pulse Plate Voltage ............. 135 V
DC Grid No. 3 Voltage ......................... 7000 V
DC Grid No. 2 Voltage ......................... -22 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 65 V
Average Cathode Current ....................... 280 mA

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