 |
|||
|
Page Title:
Conformance Inspection, Part 3 - Cont'd |
|
||
| ||||||||||
|
|  MIL-E-1/9H
TABLE I. Conformance inspection - Continued.
Method
Requirement
Conditions
Acceptance
Symbol
Unit
Limits
MIL-STD-
or test
Level
Min
Max
1311
(note 12)
Conformance
inspection, part 3 -
Continued
Intermittent life-test
See note 9
end points:
(1,000 hours)
---
Inoperatives
---
---
---
---
---
Adc
1266
Total grid 3 current
---
Ic3
0
-1.0
1301
Heater current
---
If
275
325
mA
mhos
1326
Conversion trans-
---
Sc
230
700
conductance (1)
mhos
1306
Transconductance
---
Sm
4,500
---
(1) oscillator
Adc
1336
Heater-cathode
---
Ihk
---
20
leakage
Total defectives
---
---
---
---
---
NOTES:
1. This test to be performed at the conclusion of the holding period.
2. Envelope temperature (TE) requirements, when measured in accordance with the temperature by
conduction-band measurement (MIL-STD-1311, method 1226), will be satisfied if a tube having bogey Ib
(5 percent) under normal test conditions, is determined to operate at minimum specified temperature at
any position in the life-test rack.
3.
Ic3 shall not become negative when Ec3 is varied from 0 to +30 V dc.
4.
Insert 20,000 ohms from grid 1 to ground. Apply sufficient ac signal to grid 1 to produce 0.5 mAdc
average grid current. Other equipment which correlates with MIL-STD-1311, method 1326 may be used.
5.
Nonoscillating condition. Tie grids 2 and 4 to plate; tie grid 3 to cathode.
6.
This test shall be made on a lot-by-lot basis.
7.
Apply 16.5 Vac, 60 cycle, signal to grid 1 through a 250-ohm isolating resistor.
6
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals