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Specialized - Magnetron ·Magnetron

EM15LS

Rugged metal-ceramic power magnetron designed specifically for industrial processing at 915 ±15 MHz. It delivers about 25 kW RF output at roughly 80% efficiency and uses a directly heated pure-tungsten spiral cathode for severe industrial service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
11 V / 106 A

Description

The Eimac EM15LS is a rugged power magnetron designed specifically for industrial processing. It is designed to operate in the industrial and sci- entific frequency allocation of 915 =15 Mc. A power output of 25 kW can be obtained into a matched load at an efficiency of approximately 80%. Long operating life in severe industrial environment is assured through use of a directly heated pure tungsten spiral cathode. Further, ruggedness is assured through exclusive use of metal-ceramic construction. Every effort

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
11 V
Nominal heater current
106 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

Magnetron

X-ray radiationInterelectrode capacitances
Max plate voltage
14000 V
Max plate dissipation
15000 W

Promoted fields populated only where the published value maps directly to the schema; device-specific values retained as parameters.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Magnetron

Other

  • The Eimac EM1

    5

    The Eimac EM15LS is a rugged power magnetron designed specifically

  • entific frequency allocation of [1]

    915 MHz

    entific frequency allocation of 915 =15 Mc. A power output of 25 kW can

  • entific frequency allocation of [2]

    15 MHz

    entific frequency allocation of 915 =15 Mc. A power output of 25 kW can

  • entific frequency allocation of [3]

    25 MHz

    entific frequency allocation of 915 =15 Mc. A power output of 25 kW can

  • be obtained into a matched load at an efficiency of approximately

    80

    be obtained into a matched load at an efficiency of approximately 80%.

  • Anode voltage for the EM1

    5

    Anode voltage for the EM15LS is normally supplied from a full wave three-phase rectifier with

  • Heating Time

    10 s

    Heating Time - - - - - - - - - - - 10 seconds

  • Starting Voltage (* [1]

    5 V

    Starting Voltage (*5%) - - - - - - - - - 13 volts ac

  • Starting Voltage (* [2]

    13 V

    Starting Voltage (*5%) - - - - - - - - - 13 volts ac

  • Starting Current

    115 A

    Starting Current - - - - - - - - - - - 115 amperes ac

  • Maximum Inrush Current

    250 A

    Maximum Inrush Current- - - - - - - - - 250 amperes

  • Cold Resistance

    0.03

    Cold Resistance - - - - - - - - - - - - - 0.030hms

  • Output Power

    25

    Output Power - - - - - - - - - - - - - - 25kilowatts

  • Frequency [1]

    915

    Frequency - - - - - - - - - - - - - - - 915*15Mc

  • Frequency [2]

    15

    Frequency - - - - - - - - - - - - - - - 915*15Mc

  • Output Window [1]

    20

    Output Window - - - - - - - - - - - 20 cfm 2” H.0

  • Output Window [2]

    2

    Output Window - - - - - - - - - - - 20 cfm 2” H.0

  • Output Window [3]

    0

    Output Window - - - - - - - - - - - 20 cfm 2” H.0

  • Electromagnet Voltage,dc

    50

    Electromagnet Voltage,dc- - - - - - - - - . . - - 50volts

  • Electromagnet Current,dc

    4 A

    Electromagnet Current,dc- - - - - - - - - - - - . 4 amperes

  • Filament Voltage,ac

    14

    Filament Voltage,ac - - - - - - - - . - - - . - 14volts

  • Filament Current,ac

    120 A

    Filament Current,ac - - - - - - - - - - . 120 amperes

  • Anode Voltage (d¢)

    14

    Anode Voltage (d¢) - - - - - - - - - - - . . - 14kilovolts

  • Anode Current (dc¢)

    3

    Anode Current (dc¢) - - - - - - - - - - - . - - 3Amperes

  • Anode Dissipation - - - - - - - - - - - - <

    15

    Anode Dissipation - - - - - - - - - - - - < - 15Kilowatts

  • Load VSWR [1]

    2.5

    Load VSWR - - - - - - - - - - - - . - - - . 2.5:1

  • Load VSWR [2]

    1

    Load VSWR - - - - - - - - - - - - . - - - . 2.5:1

  • Seal Temperature- - - - - - - - - <«

    175

    Seal Temperature- - - - - - - - - <« - - - . - . 175°C

  • Water Outlet Temperature- - - - - - . -« - - - =«

    70

    Water Outlet Temperature- - - - - - . -« - - - =« - . 70°C

  • Frequency - - - - - - - « - - - - - G6 [1]

    15 MHz

    Frequency - - - - - - - « - - - - - G615 915 megacycles

  • Frequency - - - - - - - « - - - - - G6 [2]

    915 MHz

    Frequency - - - - - - - « - - - - - G615 915 megacycles

  • Output Power S S ..t

    25 kW

    Output Power S S ..t 25 kilowatts

  • Anode Voltage - - - - - - - - - < [1]

    115

    Anode Voltage - - - - - - - - - <. - - 115 12.5kilovoltsdc

  • Anode Voltage - - - - - - - - - < [2]

    12.5

    Anode Voltage - - - - - - - - - <. - - 115 12.5kilovoltsdc

  • Anode Current [1]

    2.1 A

    Anode Current - - - - - - - - - - . . 2.1 2.4 amperes dc

  • Anode Current [2]

    2.4 A

    Anode Current - - - - - - - - - - . . 2.1 2.4 amperes dc

  • Efficiency [1]

    83 %

    Efficiency - - - - - - - - - - - - - 83 83 percent

  • Efficiency [2]

    83 %

    Efficiency - - - - - - - - - - - - - 83 83 percent

  • Filament Voltage [1]

    11 V

    Filament Voltage - - - - - - - - - - - - 11 10.8 volts ac

  • Filament Voltage [2]

    10.8 V

    Filament Voltage - - - - - - - - - - - - 11 10.8 volts ac

  • Filament Current [1]

    106

    Filament Current - - - - - - - - . - - - 106 103 amperesac

  • Filament Current [2]

    103

    Filament Current - - - - - - - - . - - - 106 103 amperesac

  • VSWR [1]

    3

    VSWR - - - - - - - - - . . - - - 3:1* 25:1*

  • VSWR [2]

    1

    VSWR - - - - - - - - - . . - - - 3:1* 25:1*

  • VSWR [3]

    25

    VSWR - - - - - - - - - . . - - - 3:1* 25:1*

  • VSWR [4]

    1

    VSWR - - - - - - - - - . . - - - 3:1* 25:1*

  • Electromagnet Current [1]

    3.3 A

    Electromagnet Current - - - - - - - - - . 3.3 3.6 amperes dc

  • Electromagnet Current [2]

    3.6 A

    Electromagnet Current - - - - - - - - - . 3.3 3.6 amperes dc

  • Before the anode voltage is applied, the filament current must be set for

    115 A

    Before the anode voltage is applied, the filament current must be set for 115 amperes and held

  • there for

    10 s

    there for 10 seconds. When the magnetron begins operating, the heater current should be re-

  • Published value

    3

    3. POWER SUPPLY

  • Fig

    3

    Fig. 3) becomes proportional to the anode current and curve of V, against I, for steady currents,

  • Beyond the branch point shown in Fig

    5

    Beyond the branch point shown in Fig. 5, the biasing current is zero and full series field behavior

  • self-regulating action. This leads to a power variation (see Fig

    2

    self-regulating action. This leads to a power variation (see Fig. 2 for example) which is mainly

  • temperature should not exceed

    175

    temperature should not exceed 175°C.

  • Ioz

    2.4

    Ioz 2.4a AND INDICATES VOLTAGE MINIMUM AT THE FLANGE.

  • T BIAS CURRENT_ "

    4

    T BIAS CURRENT_ " 4 w