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PL-172
Beam Power Pentode

EIA Base & Outline

Mechanical Data

Electrical Data

Heater Voltage ................................ 6 V
Heater Current ................................ 7.8 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 38 pf
Output ........................................ 18 pf
Grid to Plate ................................. 0.09 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 3000 V
Grid No. 2 Voltage ............................ 600 V
Plate Dissipation ............................. 1000 W
Grid No. 2 Dissipation ........................ 35 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 75 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -150 V
Grid No. 1 Current ............................ 22 mA
Plate Current ................................. 725 mA
Grid No. 2 Current ............................ 44 mA
Driving Power ................................. 4.1 W
Power Output (approx) ......................... 1110 W

Class C Amplifier
Plate Voltage ................................. 2500 V
Grid No. 3 Voltage ............................ 75 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -175 V
Grid No. 1 Current ............................ 31 mA
Plate Current ................................. 960 mA
Grid No. 2 Current ............................ 64 mA
Driving Power ................................. 6.8 W
Power Output (approx) ......................... 1870 W

Class C Amplifier
Plate Voltage ................................. 3000 V
Grid No. 3 Voltage ............................ 75 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -175 V
Grid No. 1 Current ............................ 24 mA
Plate Current ................................. 900 mA
Grid No. 2 Current ............................ 56 mA
Driving Power ................................. 4.8 W
Power Output (approx) ......................... 2170 W

Push Pull Class AB1 Amplifier
Plate Voltage ................................. 2000 V
Grid No. 3 Voltage ............................ 75 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -110 V
Peak Grid No. 1 Voltage........................ 210 V
Plate Current (Zero Signal) ................... 400 mA
Plate Current (Maximum Signal) ................ 1600 mA
Grid No. 2 Current (Zero Signal) .............. 20 mA
Grid No. 2 Current (Maximum Signal) ........... 90 mA
Load Resistance ............................... 2.65K Ω
Power Output (approx) ......................... 1820 W

Push Pull Class AB1 Amplifier
Plate Voltage ................................. 2500 V
Grid No. 3 Voltage ............................ 75 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -110 V
Peak Grid No. 1 Voltage........................ 210 V
Plate Current (Zero Signal) ................... 440 mA
Plate Current (Maximum Signal) ................ 1600 mA
Grid No. 2 Current (Zero Signal) .............. 20 mA
Grid No. 2 Current (Maximum Signal) ........... 85 mA
Load Resistance ............................... 3.5K Ω
Power Output (approx) ......................... 2310 W

Push Pull Class AB1 Amplifier
Plate Voltage ................................. 3000 V
Grid No. 3 Voltage ............................ 75 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -115 V
Peak Grid No. 1 Voltage........................ 200 V
Plate Current (Zero Signal) ................... 440 mA
Plate Current (Maximum Signal) ................ 1500 mA
Grid No. 2 Current (Zero Signal) .............. 10 mA
Grid No. 2 Current (Maximum Signal) ........... 75 mA
Load Resistance ............................... 4.6K Ω
Power Output (approx) ......................... 2680 W

Class AB1 Amplifier
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -110 V
Peak Grid No. 1 Voltage........................ 110 V
Plate Current (Zero Signal) ................... 200 mA
Plate Current (Maximum Signal) ................ 800 mA
Grid No. 2 Current (Zero Signal) .............. 12 mA
Grid No. 2 Current (Maximum Signal) ........... 43 mA
Driving Power ................................. 0 W
Power Output (approx) ......................... 1040 W

Class AB1 Amplifier
Plate Voltage ................................. 2500 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -115 V
Peak Grid No. 1 Voltage........................ 115 V
Plate Current (Zero Signal) ................... 200 mA
Plate Current (Maximum Signal) ................ 800 mA
Grid No. 2 Current (Zero Signal) .............. 11 mA
Grid No. 2 Current (Maximum Signal) ........... 40 mA
Driving Power ................................. 0 W
Power Output (approx) ......................... 1260 W

Class AB1 Amplifier
Plate Voltage ................................. 3000 V
Grid No. 2 Voltage ............................ 500 V
Grid No. 1 Voltage ............................ -115 V
Peak Grid No. 1 Voltage........................ 115 V
Plate Current (Zero Signal) ................... 220 mA
Plate Current (Maximum Signal) ................ 800 mA
Grid No. 2 Current (Zero Signal) .............. 11 mA
Grid No. 2 Current (Maximum Signal) ........... 39 mA
Driving Power ................................. 0 W
Power Output (approx) ......................... 1590 W

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Fri, 09 Dec 2022 05:27:05 -0700