1、_ MIL-E - 5 0738 (MU) 8 August 1973 MILITARY SPECIFICATION ELECTRONIC COMPONENT ASSEMBLY: 11738850 (POWER CONTROL) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1. 1 This specification covers one type of electronic assembly 11738850 (Po
2、wer Control) know-, as Electronic Component Assembly: (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitarion for bids or requests for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL-F-13926
3、Fire Control Materiel: General Specification Governing the Manufac- ture and Inspection of MIL-1-45607 Inspection Equipment; Acquisition, Maintenance, and Disposition of MIL-S -45743 Soldering, Manual Type, High Reliability E le ctrical, Electronic, Instrument, Communication, and Radar for Aerospace
4、 and Control Systems, Procedure for THIS D0CUMENT CONTAINS PAGES, FSC - 1240 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-E-5073 12 = 9999906 0330L112 1 W, MIL- E - 5 O 7 38 (MU) 8 August 1973 MIL-S-46844 Solder Bath Soldering of Printed Wiri
5、ng Assemblies, Automatic Machine Type S TANDAR DS MIL-STD- 105 Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definit ions MIL-STD- 1 O9 MIL-STD-810 Environmental Te st Methods DRAWINGS U. S. Armv, Frankford Arsenal Fi 1738850 Electronic Component Assembly: 1
6、1738850 (Power Control) PACKAGING DATA SHEET 11 738850 Packaging of Electronic Component Assembly: 11738850 (Power Control) (Copies of specifications, standards, drawings, and packaging data sheets required by suppliers in connection with specific procurement functions should be obtained from the pr
7、ocuring activity or as directed by the contracting officer. ) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- E-507 38(MU) 8 August 1973 3. REQUIREMENTS 3. 1 Fabrication. The eIectronic component assembly, herein referred to as the assembly, s
8、hall be manufactured in accordance with Drawing F11738850 and drawings pertaining thereto. 3. 2 General specification. The assembly shall meet the following requirements, where applicable, of MIL-F- 13926. a. Order of precedence b. Dimensions and tolerances c. Part identification and marking d. Elec
9、trical and electronic assemblies e. Workmanship 3.2. 1 Soldering. Soldering shall be in accordance with MIL-S-45743 or MIL-S-46844, except that bare copper wire exposure shall be permitted at clipped ends of component leads, 3. 3 Performance, Unless otherwise specified, the assembly shall meet the p
10、erformance requirements of this specification at standard ambient temperatures between 60 degrees Fahrenheit (OF) and 90F. 3. 3. 1 Loads, power, and signals, The assembly shall perform as specified herein when the loads, power, and signals of table I are applied as specified. 3. 3. 1. 1 Battery powe
11、r relay drive, With the power source (item 2. 1) of table I applied to P1- 1 1, the output voltage at P 1 - 13 shall be 1 1. O i3. 5 Vdc. With P1-20 connected to P1-7, the output voltage at P1-13 shall be t22. O I3. O Vdc. With the power source of table I connected to P1- 11, P1-22 and P1-21, and wi
12、th P1-20 connected to P1-7, the output voltage at P1-I3 shall be t11. O 13. 5 Vdc. 3. 3. 1. 2 Battery power switching. With the load (item 1. 2 of table I) connected to P1-17 and P1-18, the power source (item 2. 1) of table I applied to P1-22 and P1-21, and the digital type D signal of table I appli
13、ed to P1-9, the output voltage at P1- 18 shall be as shown in figure 1. (This signal may be recurring at a frequency 5100 Hertz). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Item 1. 1.1 1.2 1.3 1.4 1.5 2. 2.1 3. 3.1 3.2 TABLE I LOADS, POWER, AN
14、D SIGNALS Condition Loads Re si st or Resistor Resistor Resistor Resistor Power Source t24 Volts direct cur re nt (Vdc ) Signal Source Digital Type D t24 V Characteristic s 10 ohms (0) f5 percent 2.5S-2 f5 percent 20052 f5 percent 3 kilohms (k si? ) f5.percent 3. 6 kS2 *5 percent Tolerance: 50. 5 Vd
15、c Ripple: (O. 1 Vrnis Logical one - open circuit Logical zero - to. 3 *O. 3 V Pulse width - 100 f20psec at 50 percent amplitude poin Pulse repetition frequency - adjustable (see figure 1) Pulse width - 100 k20 psec at 50 percent amplitude point Pulse repetition frequency - adjustable (.see figure 2)
16、 Connections Connected between Pl-16 and Pl-7 when specified Pl-17, Pl-18 and P1-7 when specified Pl-13 and Pl-7 Pl-15 and Pl-7 Pl-10 and P1-7 Applied as specified herein with return to P1-7 (-) Applied as specified herein Applied as specified herein Provided by IHSNot for ResaleNo reproduction or n
17、etworking permitted without license from IHS-,-,-I MIL-E- 50738(MU) 8 August 1973 100 +20 psec *- tr and tf - er- cent of the product tolerance for which intended, this inherent error in the inspection equipment design must be considered as part of the prescribed product tolerance limit, Thus, conce
18、pt, construction, materials, dimen- sions, and tolerances used in the design of inspection equipment shall be so selected and controlled as to insure that the inspection equipment will reliably indicate acceptability of a product which does not exceed 90 percent of the prescribed tolerance limit and
19、 permit positive rejection when nonconforming. Construction shall be such as to facilitate routine calibration of inspection equipment . 4,6 Test methods and procedures 4, 6. 1 Test conditions. Unless otherwise specified, the test conditions shall be in accordance with the test facilities provisions
20、 of MIL-F-13926. 4.6.1.1 Initial conditions. Apply the loads to the assembly as specified in table I, 4.6.2 Battery power relay drive test. Apply the power source of table I (item 2.1) to P1-11. compliance with 3. 3.1. i, at P1-13 to determine compliance with 3. 3. 1. 1, Apply the power source of ta
21、ble I to Pl-11, Pl-22 and P1-21. Connect Pl-20 to Pl-7. Measure the output at P1-13 to determine compliance with 3. 3. 1 .-1. Measure the voltage at P1-13 to determine Connect P1-20 to P1-7. Measure the voltage 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
22、rom IHS-,-,- - _ MIL -E - 50 7 38( M U) 8 August 1973 4.6. 3 Battery power switching test. AppLy the load (item 1.2 of of table I) to P1-17 and Pl-18, apply the power source of table I (item 2. 1) to P1-22 and PI -21, and the digital type D signal (item 3. 1 of table I).tO P1-9. Measure the output a
23、t P1-18 to determine compliance w th 3. 3. 1.2. 4.6.4 Battery power, Q-switch voltage test, Connect the load (item 1. 1 of table I) to P1-16. to P1-22 and P1-21. with 3.3.1. 3. Apply the power source of table I (item 2. 1) Measure the output at P1-16 to determine compliance 4.6. 5 Battery power volt
24、age sense test. Apply the power source of table I (item 2.1) to P1-22, P1-21, and P1-11. Measure the outputs at P1-10, P1-8 and P1-15 to determine compliance with 3. 3. 1.4. Apply the power source to Pl-14. with 3. 3.1 4. Measure the output at Pl-15 to determine compliance 4.6.6 Tank power, primary
25、power, and Q-switch voltage test, Connect the loads (items 1.1 and 1.2) to Pl-17, Pl-18 and Pi-16. Apply the power source of table I (item 2.1) to P1-24 and P1-25, output at P1-17, P1-18, and P1-16 to determine compliance with 3.3.1 5. Measure 3h 4.6. 7 Environmental tests 4.6.7. 1 Temperature. The
26、test apparatus shall be in accordance with the applicable test facilities provisions of MIL-F - 13926 except that the assembly may be mounted on the inside surface of the test chamber. Per- form this test in accordance with Procedure I of MIL-F-13926, with condi- tions C (-4OOF) and E (+125OF), and
27、with the rate of temperature change during cycling not greater than 8OF per minute. At each of the specified operating temperatures, perform the tests of 4. 6. 2 through 4.6.6 to deter- mine compliance with 3. 3.2, 1 and 3.3. 2. 2. 4.6. 7.2 Vibration. Perform this test utilizing the apparatus speci-
28、 fied in Method 514.1 of MIL-STD-810 and in accordance with Part 1 of P.rocedure I therein, except that the vibratory conditions of 3. 3. 2. 3 shall apply. Following vibration exposure, examine the assembly for structural failures, loose hardware, wire breakage, and abrasion. Perform the tests of 4.
29、6.2 through 4.6.6 to determine compliance with 3. 3. 2. 3. 11 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - E - 50 7 3 8 (MU 8 August 1973 5. 5.1 marking shz MIL-E-50738 12 E 7777906 0330422 4 M PREPARATION FOR DELIVERY Packaging, packing,
30、and marking. Packaging, packing, and 1 be in accordance with Packaging Data Sheet 11738850, The level of protection shall be as specified in the procurement document. 6. NOTES 6.1 Intended use. The electronic component assembly is a functional part of the Battery Power Supply PP-6607( )/ VVG- 1 inte
31、nded for use in the Fire Control Rangefinder AN/VVG-1( ). The electronic component assembly functions are as follows: a. - the Q-switch motor To switch either the tank power or the battery power to b. To switch the power supply control to the battery power when the tank power voltage level falls bel
32、ow t18 Vdc. 6.2 Ordering data. Procurement documents should specify the following : a,. Title, number, and date of this specification b. Applicable packaging data sheet number (see 5.1) c. Selection of applicable levels of preservation, packaging, and packing .d. Applicable stock number e. Requirement for First Article Submission. CUSTODIAN: PREPARING ACTIVITY: Army - MLT Army- MU PROJECT NO. 1240-A306 .RU. S. GOVERNMENT PRINTING OFFICE: 1974 -713-155/6457 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
