NJ7P SQL Tube Database Query

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3KP1
Electrostatic CRT

EIA Base & Outline

EIA Base: 11M
Source ........................................ Sylvania - 1959

Mechanical Data

Source ........................................ Sylvania - 1959
Base Type ..................................... Medium Shell Magnal 11-Pin (B11-66)
Maximum Overall Height ........................ 11-1/2 In.
Maximum Diameter .............................. 3 In.
EIA Base ...................................... 11M
Mounting Position ............................. Any
Minimum Useful Screen Diameter ................ 2-3/4 In.
Bulb Contact .................................. Recessed Small Ball Cap (J1-22)

General Data

Source ........................................ Sylvania - 1959
Focusing Method ............................... Sylvania - 1959
Deflecting Method ............................. Electrostatic
Deflecting Angle (approx) ..................... Electrostatic Deg.
Fluorescence ............................... P1
Phosphorescence ............................ Green
Faceplate ..................................... Medium

Electrical Data

Source ........................................ Sylvania - 1959
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 140 V
Heater Negative with Respect to Cathode
DC Component ............................ 140 V

Direct Interelectrode Capacitances (approx)

Oscilloscope
Source ........................................ Sylvania - 1959
Grid to All Other ............................. 8 pf
Between D1 & D2 ............................... 2.5 pf
Between D3 & D4 ............................... 2.5 pf
D1 to All Others .............................. 11 pf
D3 to All Others .............................. 8 pf
D1 to All But D2 .............................. 7 pf
D2 to All But D1 .............................. 8 pf
D3 to All But D4 .............................. pf
D4 to All But D3 .............................. pf

Maximum Ratings (Design Center Values)

Oscilloscope
Source ........................................ Sylvania - 1959
Anode No. 2 Voltage ........................... 2750 V
Anode No. 1 Voltage ........................... 1100 V
Grid Voltage
Negative Bias Value ........................ 220 V
Positive Bias Voltage ...................... 0 V
Peak Voltage Between Anode No. 2 and
Any Deflection Plate ....................... 550 V
Grid Circuit Resistance ....................... 1.5M Ω
Deflection Circuit Resistance ................. 5.0M Ω

Characteristics and Typical Operation

Oscilloscope
Source ........................................ Sylvania - 1959
Anode No. 2 Voltage ........................... 2000 V
Anode No. 1 Voltage ........................... 320 to 600 V
Grid No. 1 Voltage Required for Cutoff ........ -38 to -90 V
Deflection Factor
Deflecting Plates No. 1 & 2 ................... 100 to 136 V/In
Deflecting Plates No. 3 & 4 ................... 76 to 104 V/In

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Wed, 08 Dec 2021 22:04:11 -0700