MIL-PRF-1/1385K
TABLE I. Testing and inspection.
Inspection
Method
Type
Conditions
Symbol
Limits
Unit
MIL-STD-1311
Min
Max
Conformance inspection,
part 1
1256
Both
Ic2
-7.0
+3.0 mA dc
Electrode current
(screen)
1261
Both
Ec1
-70
-100
V dc
Electrode voltage (grid)
Eb = 2,000 V dc;
Ec2 = 400 V dc;
Ec1/Ib = 67 mA dc
µA dc
Total grid current
7580W Eb = 2,000 V dc;
1266
Ic1
---
-15
Ib = 125 mA dc 14/
µA dc
8930 Eb = 2,500 V dc;
Ic1
---
-15
Ec1/Ib = 140 mA dc 14/
µA dc
Primary-grid emission
Ic1 = 70 mA dc;
1266
Both
Isg1
---
-250
(control)
t = 120; anode and screen-
grid floating
µA dc
Primary-grid emission
Ec1 = 0; t = 120;
1266
Both
Isg2
---
-250
(screen)
Ic2 = 100 mA dc;
anode floating
Heater current
1301
Both
If
2.30
2.90
A ac
Ćik
2212
Both
---
200
ma
Pulse emission
Eb = Ec2 = 250 V dc;
Ec1 = -100 V dc;
egk/ik = 1.5 a;
prr = 11 ± 1;
tp = 4,500 µs (min);
Ef = 5.4 V ac;
tr = tf = 25 µs;
slope = 0.5 percent;
ripple = 0.1 percent
Current division
Eb = Ec2 = 250 V dc;
1372
Both
egk
2.0
9.0
v
ic1
---
150
ma
(long pulse method A)
Ec1 = -100 V dc;
ic2
---
260
ma
egk/ib = 1.0 a;
prr = 11 ± 1;
tp = 4,500 µs (min)
µA dc
Interelement leakage (1)
8930 Grid-cathode;
---
I
---
+1.5
C = 0.25 µF;
µA dc
I
---
-1.5
E = ± 400 V dc 8/
µA dc
Interelement leakage (2)
8930 Grid-screen;
---
I
---
+1.5
C = 0.25 µF;
µA dc
I
---
-1.5
E = ± 1,000 V dc 8/
µA dc
---
8930 Anode-screen;
I
---
5.5
Interelement leakage (3)
C = 0.001 µF;
E = 8.0 kV dc 8/
See footnotes at end of table.
2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business