Data set 01
1971 Machlette Laboratories
Published operating points and test conditions from this source.
Triode
Other
Published value
8
8 Mw Pulse Power
The ML
8846
The ML-8846 is a general-purpose high-power triode suit- water-jacket coupling. The heavy-wall anode will dissipate
able for use in dielectric and induction heating, pulse modu- up to [1]
140 mA
able for use in dielectric and induction heating, pulse modu- up to 140 kW with a water flow of 60 gpm. The maximum
able for use in dielectric and induction heating, pulse modu- up to [2]
60 mA
able for use in dielectric and induction heating, pulse modu- up to 140 kW with a water flow of 60 gpm. The maximum
lation and similar applications. This tube features rugged, CW plate-voltage rating of
16
lation and similar applications. This tube features rugged, CW plate-voltage rating of 16 kV applies at frequencies up
ceramic-and-metal, coaxial construction with high-dissipation, to [1]
30 mA
ceramic-and-metal, coaxial construction with high-dissipation, to 30 MHz. The tube may be operated up to 88 MHz with a
ceramic-and-metal, coaxial construction with high-dissipation, to [2]
88 mA
ceramic-and-metal, coaxial construction with high-dissipation, to 30 MHz. The tube may be operated up to 88 MHz with a
stress-free, thoriated-tungsten filaments. This tube is suitable switching up to [1]
8
stress-free, thoriated-tungsten filaments. This tube is suitable switching up to 8 Mw with plate voltages up to 35 kV.
stress-free, thoriated-tungsten filaments. This tube is suitable switching up to [2]
35
stress-free, thoriated-tungsten filaments. This tube is suitable switching up to 8 Mw with plate voltages up to 35 kV.
for cavity operation and its low plate impedance adapts it to Except for minor dimensional differences, the ML
8846
for cavity operation and its low plate impedance adapts it to Except for minor dimensional differences, the ML-8846 can
Filament Voltage
165
Filament Voltage .................................................. 165 V
Filament Current at [1]
16.5 V
Filament Current at 16.5 volts 325 A
Filament Current at [2]
325 V
Filament Current at 16.5 volts 325 A
Filament Starting Current, maximum
800 mA
Filament Starting Current, maximum .... 800 A
Filament Cold Resistance
0.0052
Filament Cold Resistance 0.0052 ohm
Amplification Factor
30
Amplification Factor .................................................. 30
Maximum Water Pressure
75 mA
Maximum Water Pressure .................................................. 75 psi
Maximum Outlet Water Temperature
70 mA
Maximum Outlet Water Temperature 70 °C
Air Flow on Envelope and Seals, approximate
250 mA
Air Flow on Envelope and Seals, approximate .................................................. 250 cfm
Maximum Envelope Temperature
200 mA
Maximum Envelope Temperature .................................................. 200 °C
WARNING: This electron tube when operating at peak voltages in excess of
15 mA
WARNING: This electron tube when operating at peak voltages in excess of 15 kv may give off x-rays, which can be harmful unless adequately
Item Part No. D C Plate Voltage [1]
35
Item Part No. D C Plate Voltage ... 35 35 kV
Item Part No. D C Plate Voltage [2]
35
Item Part No. D C Plate Voltage ... 35 35 kV
D C Grid Voltage ..o [1]
-2000
D C Grid Voltage ..o -2000 -2000 V
D C Grid Voltage ..o [2]
-2000
D C Grid Voltage ..o -2000 -2000 V
Pulse Positive Grid Voltage [1]
2000
Pulse Positive Grid Voltage ................. 2000 2400 v
Pulse Positive Grid Voltage [2]
2400
Pulse Positive Grid Voltage ................. 2000 2400 v
Pulse Plate Current [1]
200
Pulse Plate Current ... 200 300 2
Pulse Plate Current [2]
300
Pulse Plate Current ... 200 300 2
Pulse Plate Current [3]
2
Pulse Plate Current ... 200 300 2
Pulse Grid Current [1]
100
Pulse Grid Current ... . 100 60 a
Pulse Grid Current [2]
60
Pulse Grid Current ... . 100 60 a
Pulse Driving Power [1]
400 kW
Pulse Driving Power .. 400 300 kw
Pulse Driving Power [2]
300 kW
Pulse Driving Power .. 400 300 kw
Pulse Power QOutput [1]
6.6
Pulse Power QOutput ........ 6.6 8.4 Mw
Pulse Power QOutput [2]
8.4
Pulse Power QOutput ........ 6.6 8.4 Mw
Plate Output Voltage [1]
33
Plate Output Voltage . 33 28 kv
Plate Output Voltage [2]
28
Plate Output Voltage . 33 28 kv
Small Gasket for Mounting Socket ..............ccocvininiin. P
12272 mA
Small Gasket for Mounting Socket ..............ccocvininiin. P-12272 +For applications requiring longer pulse duration or higher duty
Data Sheet No. ST
1006 mA
Data Sheet No. ST-1006. MAXIMUM FREQUENCY RATINGS
OPERATING CONDITIONS Frequency in Megahertzes [P R [1]
30 MHz
OPERATING CONDITIONS Frequency in Megahertzes [P R 30 60 88
OPERATING CONDITIONS Frequency in Megahertzes [P R [2]
60 MHz
OPERATING CONDITIONS Frequency in Megahertzes [P R 30 60 88
OPERATING CONDITIONS Frequency in Megahertzes [P R [3]
88 MHz
OPERATING CONDITIONS Frequency in Megahertzes [P R 30 60 88
Percent Maximum Rated Plate Voltage and Plate Input [1]
100 mA
Percent Maximum Rated Plate Voltage and Plate Input 100 78 56
Percent Maximum Rated Plate Voltage and Plate Input [2]
78 mA
Percent Maximum Rated Plate Voltage and Plate Input 100 78 56
Percent Maximum Rated Plate Voltage and Plate Input [3]
56 mA
Percent Maximum Rated Plate Voltage and Plate Input 100 78 56
Frequency ........c.oooooovviiiiiiii, [1]
88
Frequency ........c.oooooovviiiiiiii, 88 30 MH: properly controlled. The tube must, therefore, be protected by
Frequency ........c.oooooovviiiiiiii, [2]
30
Frequency ........c.oooooovviiiiiiii, 88 30 MH: properly controlled. The tube must, therefore, be protected by
D C Plate Voltage ..............ccccooevein [1]
9000
D C Plate Voltage ..............ccccooevein. 9000 16000 V
D C Plate Voltage ..............ccccooevein [2]
16000
D C Plate Voltage ..............ccccooevein. 9000 16000 V
D C Grid Voltage .............coocooveiin [1]
-3200
D C Grid Voltage .............coocooveiin. -3200 3200 V
D C Grid Voltage .............coocooveiin [2]
3200
D C Grid Voltage .............coocooveiin. -3200 3200 V
D C Plate Current [1]
20
D C Plate Current ................................ 20 20 A to diverting the energy from the tube, as well as the amount of
D C Plate Current [2]
20
D C Plate Current ................................ 20 20 A to diverting the energy from the tube, as well as the amount of
D C Grid Current [1]
2.5
D C Grid Current ... 2.5 40 A energy expended in the tube during this interval.
D C Grid Current [2]
40
D C Grid Current ... 2.5 40 A energy expended in the tube during this interval.
Plate Input [1]
170 mA
Plate Input ... 170 300 kW In addition to the normal circuit breakers and overload re-
Plate Input [2]
300 mA
Plate Input ... 170 300 kW In addition to the normal circuit breakers and overload re-
Plate Dissipation [1]
140 kW
Plate Dissipation .......................... 140 140 kW lays, it is necessary that a fast-acting electronic protective
Plate Dissipation [2]
140 kW
Plate Dissipation .......................... 140 140 kW lays, it is necessary that a fast-acting electronic protective
Power Amplifier and Oscillator, Grid-Drive Circuit —
30 MHz
Power Amplifier and Oscillator, Grid-Drive Circuit — 30 MHz output of the plate supply filter, if used, to dissipate the filrer-
D C Plate Voltage [1]
8000
D C Plate Voltage ................ 8000 12000 15000 V circuit energy as well as the rectifier output. The complete
D C Plate Voltage [2]
12000
D C Plate Voltage ................ 8000 12000 15000 V circuit energy as well as the rectifier output. The complete
D C Plate Voltage [3]
15000
D C Plate Voltage ................ 8000 12000 15000 V circuit energy as well as the rectifier output. The complete
D C Grid Voltage [1]
-750
D C Grid Voltage ............... -750 -1100 -1400 V
D C Grid Voltage [2]
-1100
D C Grid Voltage ............... -750 -1100 -1400 V
D C Grid Voltage [3]
-1400
D C Grid Voltage ............... -750 -1100 -1400 V
Peak R F Grid Voltage [1]
1210
Peak R F Grid Voltage .......... 1210 1750 2200 v
Peak R F Grid Voltage [2]
1750
Peak R F Grid Voltage .......... 1210 1750 2200 v
Peak R F Grid Voltage [3]
2200
Peak R F Grid Voltage .......... 1210 1750 2200 v
Peak R F Plate Voltage [1]
6600
Peak R F Plate Voltage .......... 6600 10300 12800 v the inception of a “fault”, and in most cases the time interval
Peak R F Plate Voltage [2]
10300
Peak R F Plate Voltage .......... 6600 10300 12800 v the inception of a “fault”, and in most cases the time interval
Peak R F Plate Voltage [3]
12800
Peak R F Plate Voltage .......... 6600 10300 12800 v the inception of a “fault”, and in most cases the time interval
D C Plate Current [1]
9.7 mA
D C Plate Current .................. 9.7 14.3 184 A should not be allowed to exceed approximately ten micro-
D C Plate Current [2]
14.3 mA
D C Plate Current .................. 9.7 14.3 184 A should not be allowed to exceed approximately ten micro-
D C Plate Current [3]
184 mA
D C Plate Current .................. 9.7 14.3 184 A should not be allowed to exceed approximately ten micro-
D C Grid Current [1]
2.1 s
D C Grid Current .................. 2.1 2.9 3.0 A seconds. For some basic electronic-crowbar fault-protection
D C Grid Current [2]
2.9 s
D C Grid Current .................. 2.1 2.9 3.0 A seconds. For some basic electronic-crowbar fault-protection
D C Grid Current [3]
3 s
D C Grid Current .................. 2.1 2.9 3.0 A seconds. For some basic electronic-crowbar fault-protection
R F Load Resistance [1]
380 ohm
R F Load Resistance .............. 380 400 380 ohms
R F Load Resistance [2]
400 ohm
R F Load Resistance .............. 380 400 380 ohms
R F Load Resistance [3]
380 ohm
R F Load Resistance .............. 380 400 380 ohms
Driving Power, approximate [1]
2.5 mA
Driving Power, approximate .. 2.5 49 7.2 kW
Driving Power, approximate [2]
49 mA
Driving Power, approximate .. 2.5 49 7.2 kW
Driving Power, approximate [3]
7.2 mA
Driving Power, approximate .. 2.5 49 7.2 kW
Power Output, approximate [1]
58 mA
Power Output, approximate .. 58 132 215 kW protection device, refer to the references listed.
Power Output, approximate [2]
132 mA
Power Output, approximate .. 58 132 215 kW protection device, refer to the references listed.
Power Output, approximate [3]
215 mA
Power Output, approximate .. 58 132 215 kW protection device, refer to the references listed.
D C Plate Voltage
35
D C Plate Voltage ... 35 kV
Peak Plate Voltage
40
Peak Plate Voltage ... 40 kv
Peak Negative Grid Voltage
-7000
Peak Negative Grid Voltage .. -7000 v
Pulse Cathode Current
360
Pulse Cathode Current ... 360 a
Grid Dissipation
25 kW
Grid Dissipation ............ 25 kW
Published value
1
1. W. N. Parker and M. V. Hoover, "Gas Tubes Protect High Power
Plate Dissipation .................ccooooeoiii [1]
140 kW
Plate Dissipation .................ccooooeoiii 140 kW Transmitters”, Electronics, 29, 144, January 1956.
Plate Dissipation .................ccooooeoiii [2]
29 kW
Plate Dissipation .................ccooooeoiii 140 kW Transmitters”, Electronics, 29, 144, January 1956.
Plate Dissipation .................ccooooeoiii [3]
144 kW
Plate Dissipation .................ccooooeoiii 140 kW Transmitters”, Electronics, 29, 144, January 1956.
Plate Dissipation .................ccooooeoiii [4]
1956 kW
Plate Dissipation .................ccooooeoiii 140 kW Transmitters”, Electronics, 29, 144, January 1956.
Pulse Duration, approXimate .......ccocooeer oo [1]
1000 mA
Pulse Duration, approXimate .......ccocooeer oo 1000 pst 2. H. D. Doolittle, “High Power Hydrogen Thyratrons”, Cathode
Pulse Duration, approXimate .......ccocooeer oo [2]
2 mA
Pulse Duration, approXimate .......ccocooeer oo 1000 pst 2. H. D. Doolittle, “High Power Hydrogen Thyratrons”, Cathode