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Power - Pentode (NOT beam) (over 1000V 100W) ·Pentode

GU81M

Russian generator pentode designed for RF power service. Manufacturer documentation identifies radio-frequency generation and power amplification as its defining function.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
GIANT7
Base pins
7
Nominal heater
12.6 V / 10.5 A

Description

The GU81M is a generator pentode for RF power service.

Socket description

Giant 7-contact transmitting-tube base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
GIANT7
Base pins
7
Nominal heater voltage
12.6 V
Nominal heater current
10.5 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
3000 V
Max screen voltage
600 V
Max plate dissipation
600 W
Max screen dissipation
120 W
Max grid dissipation
10 W

Promoted-field audit performed from English ratings/characteristics; detailed electrical values retained in parameter table. REDO promoted-field audit completed from English Limit Operating Values / Electrical Parameters tables.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Heater voltage

    12.6 V

    Nominal +/-6%

  • RF output power at 25 m

    750 W

    Published value

Other

  • Heater current

    10.5 A

    Maximum

  • Anode voltage, wavelength >6 m

    2500 V

    Published limit

  • Anode voltage, wavelength >50 m

    3000 V

    Published limit

  • Screen-grid voltage

    600 V

    Maximum

  • Anode dissipation

    450 W

    Maximum

  • Screen-grid dissipation

    120 W

    Maximum

  • Control-grid dissipation

    10 W

    Maximum

  • Short-term anode dissipation

    6400 W

    Up to 3 minutes

  • Envelope temperature

    370 degC

    Maximum

Data set 02

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • grid [1]

    12

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [2]

    3

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [3]

    1

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [4]

    4

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [5]

    2

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [6]

    5

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [7]

    6

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • grid [8]

    3

    1,2 -cathode; 3—grid 1; 4 - grid 2; 5— cathode centre tap; 6, C3-grid 3;

  • temperature, °C [1]

    -10 C

    TemnepaTtypa okpyxatouern cpeasl, °C . ... ... .. .. —-10-+55 Ambient temperature, °C ......... ... ... ... —10to +55

  • temperature, °C [2]

    55 C

    TemnepaTtypa okpyxatouern cpeasl, °C . ... ... .. .. —-10-+55 Ambient temperature, °C ......... ... ... ... —10to +55

  • temperature, °C [3]

    -10 C

    TemnepaTtypa okpyxatouern cpeasl, °C . ... ... .. .. —-10-+55 Ambient temperature, °C ......... ... ... ... —10to +55

  • temperature, °C [4]

    55 C

    TemnepaTtypa okpyxatouern cpeasl, °C . ... ... .. .. —-10-+55 Ambient temperature, °C ......... ... ... ... —10to +55

  • current, A,atmost

    11 A

    Tok Hakana, A,Hebonee . ..................... 11 Filament current, A,atmost .. ...............

  • voltage

    2 uS

    KpyTu3aHa xapakTepUcTUKIM (NP HanpsXeHUsIX Mutual conductance (at anode voltage 2 kV,

  • current [1]

    2 A

    aHopaa 2 kB, BTopow ceTku 600 B, Toke grid 2 voltage 600 V, anode current

  • current [2]

    600 A

    aHopaa 2 kB, BTopow ceTku 600 B, Toke grid 2 voltage 600 V, anode current

  • current [3]

    2 A

    aHopaa 2 kB, BTopow ceTku 600 B, Toke grid 2 voltage 600 V, anode current

  • current [4]

    600 A

    aHopaa 2 kB, BTopow ceTku 600 B, Toke grid 2 voltage 600 V, anode current

  • anode [1]

    1

    KoadpuuymeHT ycuneHus no nepBon ceTke Gain coefficient (grid 1—grid 2) (at anode

  • anode [2]

    2

    KoadpuuymeHT ycuneHus no nepBon ceTke Gain coefficient (grid 1—grid 2) (at anode

  • voltages [1]

    2 kV

    OTHOCUTENbHO BTOPOW CETKY (NPW HANPSIXXEHUAX voltage 2kV, grid 2 voltages 600 and 500 V,

  • voltages [2]

    2 kV

    OTHOCUTENbHO BTOPOW CETKY (NPW HANPSIXXEHUAX voltage 2kV, grid 2 voltages 600 and 500 V,

  • voltages [3]

    600 kV

    OTHOCUTENbHO BTOPOW CETKY (NPW HANPSIXXEHUAX voltage 2kV, grid 2 voltages 600 and 500 V,

  • voltages [4]

    500 kV

    OTHOCUTENbHO BTOPOW CETKY (NPW HANPSIXXEHUAX voltage 2kV, grid 2 voltages 600 and 500 V,

  • grid [1]

    200 kV

    Toke aHOga 200 MA) .. ... .. ... 2,54 Bias voltage (at anode voltage 2 kV, grid 2

  • grid [2]

    254 kV

    Toke aHOga 200 MA) .. ... .. ... 2,54 Bias voltage (at anode voltage 2 kV, grid 2

  • grid [3]

    2 kV

    Toke aHOga 200 MA) .. ... .. ... 2,54 Bias voltage (at anode voltage 2 kV, grid 2

  • grid [4]

    2 kV

    Toke aHOga 200 MA) .. ... .. ... 2,54 Bias voltage (at anode voltage 2 kV, grid 2

  • voltage [1]

    600 V

    Hanpsi>eHue cMeLeHus (Npy Hanps>KeHWsx aHo4a voltage 600 V),V ... ... ... ... 116-160

  • voltage [2]

    116 V

    Hanpsi>eHue cMeLeHus (Npy Hanps>KeHWsx aHo4a voltage 600 V),V ... ... ... ... 116-160

  • voltage [3]

    -160 V

    Hanpsi>eHue cMeLeHus (Npy Hanps>KeHWsx aHo4a voltage 600 V),V ... ... ... ... 116-160

  • Interelectrode capacitance, pF [1]

    2 pF

    2 kB, BToponcetkn 600B),B . ... ... ... ... ... 116-160 Interelectrode capacitance, pF:

  • Interelectrode capacitance, pF [2]

    600 pF

    2 kB, BToponcetkn 600B),B . ... ... ... ... ... 116-160 Interelectrode capacitance, pF:

  • Interelectrode capacitance, pF [3]

    116 pF

    2 kB, BToponcetkn 600B),B . ... ... ... ... ... 116-160 Interelectrode capacitance, pF:

  • Interelectrode capacitance, pF [4]

    -160 pF

    2 kB, BToponcetkn 600B),B . ... ... ... ... ... 116-160 Interelectrode capacitance, pF:

  • input [1]

    25

    MexanekTpoaHble emkocTu, nd: input ... 25-32

  • input [2]

    -32

    MexanekTpoaHble emkocTu, nd: input ... 25-32

  • output [1]

    25

    BXOAHAR . ... .. ... ... 25-32 output . ... 21-26

  • output [2]

    -32

    BXOAHAR . ... .. ... ... 25-32 output . ... 21-26

  • output [3]

    21

    BXOAHAR . ... .. ... ... 25-32 output . ... 21-26

  • output [4]

    -26

    BXOAHAR . ... .. ... ... 25-32 output . ... 21-26

  • anode, atmost [1]

    21

    BBIXOAHASA . ..ot oot 21-26 grid 1—anode, atmost ...................... 0.1

  • anode, atmost [2]

    -26

    BBIXOAHASA . ..ot oot 21-26 grid 1—anode, atmost ...................... 0.1

  • anode, atmost [3]

    1

    BBIXOAHASA . ..ot oot 21-26 grid 1—anode, atmost ...................... 0.1

  • anode, atmost [4]

    0.1

    BBIXOAHASA . ..ot oot 21-26 grid 1—anode, atmost ...................... 0.1

  • grid [1]

    1 W

    neppas ceTka—TpeTbaceTka . .............. 1-4 Output power (at anode voltage 2 kV, grid 2

  • grid [2]

    -4 W

    neppas ceTka—TpeTbaceTka . .............. 1-4 Output power (at anode voltage 2 kV, grid 2

  • grid [3]

    2 W

    neppas ceTka—TpeTbaceTka . .............. 1-4 Output power (at anode voltage 2 kV, grid 2

  • grid [4]

    2 W

    neppas ceTka—TpeTbaceTka . .............. 1-4 Output power (at anode voltage 2 kV, grid 2

  • grid [1]

    600 V

    MOWHOCTL BbIXOAHAS (MPY HANPAXKEHUAX aHoAa voltage 600 V, bias voltage —200 V, grid 1

  • grid [2]

    -200 V

    MOWHOCTL BbIXOAHAS (MPY HANPAXKEHUAX aHoAa voltage 600 V, bias voltage —200 V, grid 1

  • grid [3]

    1 V

    MOWHOCTL BbIXOAHAS (MPY HANPAXKEHUAX aHoAa voltage 600 V, bias voltage —200 V, grid 1

  • current [1]

    2 A

    2 kB, BTopon ceTkun 600 B, Hanps>xeHun cMmelleHns drive voltage amplitude 300 V, anode current,

  • current [2]

    600 A

    2 kB, BTopon ceTkun 600 B, Hanps>xeHun cMmelleHns drive voltage amplitude 300 V, anode current,

  • current [3]

    300 A

    2 kB, BTopon ceTkun 600 B, Hanps>xeHun cMmelleHns drive voltage amplitude 300 V, anode current,

  • current at most [1]

    200 mA

    MuHyc 200 B, amnnnTyae HanpskeHns Bo3byxaeHvs atleast 450 mA, grid 1 current at most 20 mA,

  • current at most [2]

    450 mA

    MuHyc 200 B, amnnnTyae HanpskeHns Bo3byxaeHvs atleast 450 mA, grid 1 current at most 20 mA,

  • current at most [3]

    1 mA

    MuHyc 200 B, amnnnTyae HanpskeHns Bo3byxaeHvs atleast 450 mA, grid 1 current at most 20 mA,

  • current at most [4]

    20 mA

    MuHyc 200 B, amnnnTyae HanpskeHns Bo3byxaeHvs atleast 450 mA, grid 1 current at most 20 mA,

  • current, at most [1]

    300 mA

    nepsow ceTkmn 300 B, Tokax aHoAa He MeHee grid 2 current, at most 220 mA),

  • current, at most [2]

    2 mA

    nepsow ceTkmn 300 B, Tokax aHoAa He MeHee grid 2 current, at most 220 mA),

  • current, at most [3]

    220 mA

    nepsow ceTkmn 300 B, Tokax aHoAa He MeHee grid 2 current, at most 220 mA),

  • current (average value), A

    600 mA

    Tok, A: Anode current (average value), A . ............... 0.6

  • current (average value), A [1]

    3 A

    aHoga (cpegHee 3HaYeHne) .. ............... 0,6 Grid 1 current (average value), A .. ... ... ....... 0.02

  • current (average value), A [2]

    6 A

    aHoga (cpegHee 3HaYeHne) .. ............... 0,6 Grid 1 current (average value), A .. ... ... ....... 0.02

  • current (average value), A [3]

    1 A

    aHoga (cpegHee 3HaYeHne) .. ............... 0,6 Grid 1 current (average value), A .. ... ... ....... 0.02

  • current (average value), A [4]

    20 mA

    aHoga (cpegHee 3HaYeHne) .. ............... 0,6 Grid 1 current (average value), A .. ... ... ....... 0.02

  • current (average value), A [1]

    2 A

    .. 0,02 Grid 2 current (average value), A ................ 0.2

  • current (average value), A [2]

    2 A

    .. 0,02 Grid 2 current (average value), A ................ 0.2

  • current (average value), A [3]

    200 mA

    .. 0,02 Grid 2 current (average value), A ................ 0.2

  • Dissipation, W [1]

    3 kW

    BTOPOW CeTKW (CpeAHee 3HaYEHNe) .. ......... 0,2 Dissipation, W:

  • Dissipation, W [2]

    2 kW

    BTOPOW CeTKW (CpeAHee 3HaYEHNe) .. ......... 0,2 Dissipation, W:

  • anode

    450

    Paccensaemas MOWHOCTb, BT: anode ... 450

  • dissipation) [1]

    450 W

    AHOAOM . . . ... 450 anode (momentary dissipation) .. ............. 600

  • dissipation) [2]

    600 W

    AHOAOM . . . ... 450 anode (momentary dissipation) .. ............. 600

  • temperature,°C

    10 C

    NEPBOV CETKOM . ..t v ier it e 10 Envelope temperature,°C ........

  • Anode Characteristic Curves

    2

    —_— — Haunbonblian Ly Th, , P AHOAOM (Pa max) Averaged Grid 2-Anode Characteristic Curves:

  • Anode Characteristic Curves: Uy = [1]

    126

    Averaged Anode Characteristic Curves: Uy =126 V; Uy, = 0.5 kV

  • Anode Characteristic Curves: Uy = [2]

    0.5

    Averaged Anode Characteristic Curves: Uy =126 V; Uy, = 0.5 kV