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|  MIL-E-1/83G
TABLE I. Testing and inspection - Continued.
MIL-STD-1311
Requirement or test
Conditions
Symbol
Units
Limits
Test method
Min
Max
Conformance inspection,
part 3
1506
Heater-cycling life
Ef = 7.5 V;
---
---
---
---
Ehk = -100 V dc;
Ec1 = Ec2 = Eb = 0
14/
---
Heater-cycling life-test
end poiint:
A dc
1336
Heater-cathode leakage
Ehk = +25 V dc
Ihk
---
20
A dc
Ehk = -100 V dc
Ihk
---
20
---
---
---
---
1516
Stability life
Epp = 460 V ac;
Rp/Ib = 80 mA dc (min);
Rg1 = 50,000 ohms;
Rp/ib = 500 ma (min);
Ta = room;
tk = 20 +0, -1
5/ 15/
---
Stability life-test
end points
(2 and 20 hours)
3201
Critical grid voltage
Ecc1
-2.8
-4.6
V dc
for conduction (1)
ĆEcc1
---
Change in grid
---
15
%
voltage (1) of
individual tubes
1501
Intermittent life
Epp = 460 V ac;
---
---
---
---
Rp/Ib = 80 mA dc (min);
Rg1 = 50,000 ohms;
Rp/ib = 500 mA (min);
tk = 20 +0, -1
Ehk = -100 V dc;
TE = 150C (min)
5/ 15/ 16/
---
Intermittent life-test
end points (500 hours)
3241
Heater current
If
550
660
mA
3201
Critical grid voltage
Ecc1
-2.0
-4.8
V dc
for conduction (1)
3201
Critical anode voltage
Ebb
---
50
V dc
for conduction (1)
1231
Pulse emission
etd
---
100
v
A dc
1336
Heater-cathode
Ehk = +25 V dc
Ihk
---
20
A dc
leakage
Ehk = -100 V dc
Ihk
---
20
1211
Insulation of electrodes
g2 = p
R
380
---
Meg
See footnotes at end of table.
TABLE I. Testing and inspection - Continued.
4
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