MIL-PRF-1/1767D
TABLE I. Testing and inspection.
Inspection
Method
Conditions
Acceptance
Symbol
Limits
Unit
level 5/
Min
Max
Conformance inspection,
part I
A ac
168
152
If
0.65
t = 120 ± 15
1301
Filament current
V dc
-146
-110
Ec1
0.65
1261
Electrode voltage (grid)
µA dc
-25
---
Ic1
0.65
1266
Total grid current
25
---
Ic2
0.65
1256
Electrode current
mA dc
(screen)
---
90
is
0.65
eb = ec2 = ec1 = 2.5 kv
1231
Peak emission
a
µA dc
-500
---
Isg1
0.65
Pg1 = 200 W; t = 120 max
1266
Primary grid emission
or until stable; anode and
(grid)
g2 floating
µA dc
-500
---
Isg2
0.65
Pg2 = 450 W; Ec1 = 0 V dc;
1266
Primary grid emission
t = 120 max or until stable;
(screen)
anode floating
Conformance inspection,
part 2
pF
167
154
Cin
---
1331
Direct-interelectrode
pF
27
22
Cout
capacitance (ground
pF
2
---
Cgp
cathode connection)
pF
72
62
Cin
---
1331
Direct-interelectrode
pF
28
23
Cout
capacitance (ground
pF
0.30
---
Cpk
grid connection)
v
0
---
egk
---
Eb = Ec2 = 2,000 V dc; Ec1
1372
Current division
a
3.2
---
ic2
= -800 V dc; egk/ib = 19 a
(method B, short
pulse)
Class AB1 amp; F = 1 MHz
kW
---
20
Po
---
(min); Eb = 9 kV dc; Ec2
---
Power output 1/
(useful)
= 2 kV dc; Ec1/Ibo = 0.1 A
dc; Eg1/Ib = 3.7 A dc;
Rl = 1,125 ± 5 percent;
anode tank = 10 to 15
See footnotes at end of table.
2
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