MIL-STD-202H.pdf - 第288页

MI L - S TD - 202 -3 10 NOT E: The oscilloscope shall have an accuracy of ± 3 per c e nt or b et t er on t i m e b ase a nd have provisi on for exter nal triggering. F I G URE 2 . C al i br at i on c i r c u it for test …

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MIL-STD-202-310
Resistors Capacitors
R
1
- 35K 1/2W, 1% (see note 1) C
1
- .0022µF, 600 VDCW (see note 1)
R
2
- 27K 1/2W, 5%
R
3
- 47K 1W, 5% Miscellaneous
R
4
- 200K 1/2W, 5%
R
5
- 70K 1W, 5% DS
1
- NE-51
R
6
- 2.4K 1W, 5% S
1
- DPDT
R
7
- 5K 1W S
2
- SPSTNC 125V 1 amp (push)
R
8
- 500 1/2W, 5% V
1
- JAN-5727/2D21W
NOTES:
1. These values are to be chosen to obtain the desired time-duration for the applicable test condition (see 4.3).
These particular values are applicable to 10 microseconds time-duration only.
FIGURE 1. Test-circuit A; monitor circuit for contact-opening and closing.
3
北测（上海）电子科技有限公司
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MIL-STD-202-310
NOTE: The oscilloscope shall have an accuracy of ±3 percent or better on time base and have provision for
external triggering.
FIGURE 2. Calibration circuit for test-circuit A.
4
北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676
MIL-STD-202-310
C
1
, C
2
- Choose for specified time (see note 1) R
6
- 1,000 ohms 1/4W, 5%
DS
1
, DS
2
- No. 344 Lamp R
7
- 100 ohms 1/4W, 5%
R
1
- 750 ohms 1/4W, 5% R
8
- 200 ohms pot.
R
2
- 2,000 ohms pot. Q
1
, Q
2
- 2N332A or equivalent
R
3
, R
5
- 10,000 ohms 1/4W, 5% SCR
1
, SCR
2
- 2N1595 or equivalent
R
4
- 2,500 ohms 1/4W, 5% S
1
- SPST NC Push
NOTE:
1. Use .0022 µF for 10 microsecond time-duration. Other time-duration will require larger capacitors.
FIGURE 3. Test-circuit B; monitor circuit for contact-chatter and false closures.
5
北测（上海）电子科技有限公司
联系方式：xuyj@beice-sh.com 13917165676