MIL-E-1/83H
TABLE I. Testing and inspection - Continued.
Limits
Method
Conditions
Symbol
Requirement or test
Units
MIL-STD-1311
Min
Max
Conformance
inspection, part 3 -
Continued
Intermittent life-test
---
end points:
(1,000 hours)
Heater current
3241
If
550
666
MA
Critical anode voltage
3201
Ecc1
-1.6
-4.8
V dc
for conduction (1)
Critical grid voltage
3201
Ebb
---
120
V dc
for conduction (1)
µA dc
Heater-cathode
1336
Ehk = +25 V dc;
Ihk
---
50
µA dc
leakage
Ehk = -100 V dc
Ihk
---
50
MegΩ
Insulation of electrodes
1211
g2 = p
R
300
---
Life test (continuous)
---
Group A;
---
---
---
---
epy = 500 v (approx);
egy = 100 v (max);
Ecc1 = -50 V dc;
Ecc2 = 0;
Zo = 12.5 ± 5 percent;
R = 7.5 ± 5 percent
18/
Life-test end points;
---
(200 hours)
(continuous)
Pulse emission
1231
etd
---
100
v
Operation under
---
4/
ib
16
---
a
continuous life-test
conditions
Vibration-fatigue
1031
---
---
---
---
Vibration-fatigue
---
test end points:
µA dc
Heater-cathode
1336
Ehk = +25 V dc;
Ihk
---
40
µA dc
leakage
Ehk = -100 V dc
Ihk
---
40
Critical anode voltage
3201
Ebb
---
50
V dc
for conduction (1)
Pulse emission
1231
etd
---
76
v
Critical anode voltage
3201
Ecc1
-2.9
-4.5
V dc
for conduction (1)
After completion of a pulse, a 20 µs delay is required before positive voltage of more than 10 v is applied to tube.
1/
2/
Averaged over any interval of 30 seconds maximum.
3/
This test shall be performed at the conclusion of the holding period.
5
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