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| MIL-E-1/190J
NOTES: - Continued.
5. Prior to this test, tubes shall be preheated a minimum of 5 minutes with all sections operating at the conditions
specified below. The 3-minute test is not permitted. Test at specified conditions within 3 seconds after
preheating. Grid emission shall be the last test performed on the sample selected for the grid-emission test.
Ef
Ec1
Eb
Rk
Rg
V
V dc
V dc
Ohms
Meg
7.5
0
150
820
1.0
6. A grid resistor of 0.1 megohm shall be added; however, this resistor shall not be used when a thyratron type
short indicator is used.
7. Envelope temperature (TE) requirements, when measured in accordance with the temperature by conduction-
band measurement (method 1226), will be satisfied if a tube having bogey Ib (5 percent) under normal test
conditions, is determined to operate at or above minimum specified temperature at any position in the life-test
rack.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 11
DLA - CC
(Project 5960-3611)
Review activities:
Army - AR, MI
Navy - AS, CG, MC, OS
Air Force - 99
5
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