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A horizontal ribbon.

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A horizontal ribbon.

50C5
Beam Power Amplifier

EIA Base & Outline

EIA Base: 7CV
Source ........................................ RCA RC-29 - 1975

Application

Miniature type used in output stage of compact , ac/dc radio receivers. Requires miniature 7-contact socket.

Mechanical Data

Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-3
EIA Base ...................................... 7CV
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 50 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 13 pf
Output ........................................ 6.5 pf
Grid to Plate ................................. 0.5 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 150 V
Grid No. 2 Voltage ............................ 130 V
Plate Dissipation ............................. 7 W
Grid No. 2 Dissipation ........................ 1.4 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -7.5 V
Amplification Factor .......................... 49
Plate Resistance (approx) ..................... 14K Ω
Transconductance .............................. 7500 µMho
Plate Current ................................. 50 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 8.5 mA
Load Resistance ............................... 2.5K Ω
Power Output (approx) ......................... 1.9 W

Class A Amplifier
Plate Voltage ................................. 120 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -8 V
Peak Grid No. 1 Voltage........................ 8 V
Plate Resistance (approx) ..................... 10K Ω
Transconductance .............................. 7500 µMho
Plate Current (Zero Signal) ................... 49 mA
Plate Current (Maximum Signal) ................ 50 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 8.5 mA
Load Resistance ............................... 2.5K Ω
Power Output (approx) ......................... 2.3 W

A horizontal ribbon.

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A horizontal ribbon.

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Mon, 29 Nov 2021 05:18:17 -0700