MIL-PRF-1/1679C
TABLE I. Testing and inspection.
Limits
Method
Inspection
Notes
Conditions
Symbol
Unit
MIL-STD-1311
Min
Max
Conformance inspection
part 1
6/
1231
ec1 = ec2 = eb
is
45
---
a
Peak emission
= 1,000 v;
tk = 300 (min)
---
Ec1/Ib = 100 mA dc;
1256
Ic2
0
5.0
mA dc
Electrode current
Eb = 150 V dc;
(screen)
Ec2 = 100 V dc
---
Ec1/Ib = 50 mA dc
Electrode voltage (1)
1261
Ec1
-190
-290
V dc
(grid)
---
Ec1/Ib = 1.0 mA dc
Electrode voltage (2)
1261
Eco
---
-350
V dc
(grid)
µA dc
2/ 6/ Ec1/Ib = 50 mA dc
Total grid current
1266
Ic1
---
-20
µA dc
10/
Primary grid emission
Ic1 = 65 mA dc;
1266
Isg1
---
-50
(control)
t = 15 sec; anode and
screen grid floating
µA dc
10/
Primary grid emission
Ec1 = 0;
1266
Isg2
---
-150
(screen)
t = 15 sec;
Ic2 = 100 mA dc;
anode floating
3/ 6/ Ec1 = -800 V dc;
Grid-pulse operation (1)
1356
iL
20
---
a
ĆiL
---
10
Ebb = 25 kV dc;
%
Never negative
Ec2 = 1,350 V dc;
Ic2
R = 1,030 to
1,070 ohms;
t = 300 sec (max)
Conformance inspection
part 2
Heater current
Ef = 27.0 V
1301
---
If
1.95
2.35
A
4/
Torque
---
---
---
---
---
Cathode grounded
---
Direct-interelectrode
1331
---
2.0
pF
Cgp
capacitance
35
50
pF
Cin
6.0
11
pF
Cout
16
---
a
Ec1 = -800 V dc;
Grid-pulse operation (2)
iL
3/
1356
ĆiL
---
10
%
Ebb = 20 kV dc;
Never negative
Ec2 = 1,250 V dc;
Ic2
R = 1,050 to
1,100 ohms;
t = 300 sec (max)
See footnotes at end of table.
2
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