1、Ii - -. - _- I .- I MIL-T-BLLq8B 13 7777706 0358707 b t MILITARY SPECIFICATION TWSFORMER, DISCRIMIMOR (For Torpedo Mark 37 Mods O, 2, and 3) MIL-T-8U48B( OS) 31 August 1972 Superseding MIL-T-81148A( Wep ) 21 October i965 This specification has been approved by the Naval Ordnance Systems Command, Dep
2、artment of the Navy 1. SCOPE 1.1 This specification establishes the requirements for the procure- ment of a Discriminator Transformer, NAVORD Dwg 1.563729, which is used in the enabler assedled unit of an acoustic panel. 2. APPLICABrn DOCUMENTS 2.1 The following documents of the issue in effect on d
3、ate of invita- tion for bids or request for proposal form General Specifica- tion for Capacitors, Fixed, Mica-Dielectric; General Specification for Capacitors, Fixed, Paper-Dielectric, Direct Current (Hermetically Sealed in Metallic Cases) Preservation, Methods of Provided by IHSNot for ResaleNo rep
4、roduction or networking permitted without license from IHS-,-,-MIL-T-BLL48B 13 m 7777906 0358708 8 m t -. MIL-T-81148B(OS) MIL-R-10509 MIL-S-19500 MIL-E-82590 STANDARDS Mi lit ary M IL-STD-105 Resistors, Fixed Film (High Stability), General Specification for Semiconductor Devices, General Specifi- c
5、ations for .Environmental Requirements and Tests (For Torpedo Mk 37 Components and As- semblies ) Sampling Procedures and Tables for Inspection by Attributes MIL-STD-129 Marking for Shipment and Storage MIL- STD-147 MIL-STD-202 DRAWINGS Naval Ordnance Systems Command Palletized and Containerized Uni
6、t Loads, 40“ x 48“ Pallets, Skids, Runners, or Pallet-Type Base. Test Methods for Electronic and Electrical Component Parts NAVORD dwg 1563729 Transformer, Discriminator (Copies of specifications, standards, drawings, and publications required by the contractor in connection with specific procuremen
7、t functions should be obtained from the procuring activity or as directed by the contracting officer. 1 2.2 Other publications. TTie folIowing documents fom a part ofthis- specification to the extent specified herein. the issue in effect on date of invitation for bids or request for proposals shall
8、apply. Unless otherwise indicated, National Bureau of Standards Publications Handbook H28 Screw-Thread Standards for Federal Services (Application for copies should be addressed to the Superintendent of Doc- uments, Government Printing Office, Washington, D.C. 20402,) 2 s- Provided by IHSNot for Res
9、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-8ULC8B( OS) United States of America Standards Institute USAS 32.2 1967 Graphic symbols for Electrical and Elec- tronics Diagrams ,- (Application for copies should be addressed to DOD Single Stock Point, U. S. Naval Supply
10、 Depot, Philadelphia, Pennsylvania 19120. ) 3. REQUIRFMENTS 3.1 Description. The discriminator tramformer is a plug-in assdly, composed of various electronic components, in a hermetically sealed metal container. equivalent direct current (c) output voltages. It is used in a circuit which converts fr
11、equency deviations to 3.2 General requirements 3.2.1 Preproduction sample. Unless otherwise specified in the contract or order, preproduction samples of the transformer shall be manufactured using the methods and procedures proposed for the production lot. These units shall be tested as specified in
12、 Section 4 herein and are for the purpose of determining, prior to starting production, that the contractor s production methods are capable of producing transformers that comply with the technical requirements of the contract. See 4.3.1. 3.2.2 Materials. Unless otherwise specified in the contract,
13、requisition, or order, al1 materials and purchased parts entering into the final as- sembly of the transformer shall conform strictly to the detailed require- ments indicated on the applicable drawings, specifications, and publica- tions listed in NAVORD Dwg 1563729: 3.2.3 Surface treatment, constru
14、ction, and dimensions. Surface treat- ment, construction, and dimensions for the transformer shall be in accordance with the applicable drawings, specifications, and publications listed in WVO Dwg 1563729. 3.2.4 Moisture, fungus, and corrosion. The transformer shall be rendered moisture, fungus, and
15、 corrosion resistant in accordance with detail require- ments specified on the rawings and specifications listed in NIVORD Dwg 1563729. 3.2.5 Marking. Marking of asseinblies, subasseniblies, and parts shall be 3.2.6 Threads. in accordance wi-Lh applicable drawings listed in NAVORD Dwg 1563729. Unles
16、s otherwise specified, all threads shall be in ac- cordance with National Bureau of Standards Eandbook 28. fit for threads shall be as specified on the applicable drawings. The class or 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-*XI.B( O
17、S) 3.2.7 Conflicting requirements. In the event of conflict between the documents referenced herein and the contents of this specification, the contents of this specification shall apply. 3.3 Symbols. Interpret schemtic diagram symbols in accordance with USAS Y32.27. 3.4 Performance requirements and
18、 product characteristics. The trans- former shall meet the following performa;nce requirements and product characteristics: 3.4.1 -. Dc - output voltages 3.4.1.1 The frequency necessary to produce zero voltage at output #i (see Figure i) of the transformer hal1 be 7000 plus or minus 50 Hertz (Hz), w
19、hen measured as specified in 4.5.4.2. 3.4.1.2 The frequency necessary to produce zero voltage at 0u.t;pu-t j#2 (see Figure 1) of the transformer shall be within plus or minus 10 z of the frequency measured in 3.4.1.1, when measured as specified in 4.5.4.2. * 3.4.2 Polarity of the output voltages 3.4
20、.2.1 The polarity of the voltage at output #i shall be negative when the frequency is less than the frequency in 3.4.1.1, when measured as specified in 4.5.4.3. 3.4.2.2 The polarity of the voltage at output #l shall be positive when the frequency is greater than the frequency in 3.4rl.1, when measur
21、ed as specified in 4.5.4.3. 3.4.2.3 The polarity of the voltage at output #2 shal be positive when the frequency is less than the frequency in 3.4.1.2, when measured as specified in 4.5.4.3. 3.4.2.4 The polarity of the voltage at output #2 shall be negative when the frequency is greater ehan the fre
22、quency in 3.4.1.2, when measured as specified in 4 . 5 . 4 . 3 . 3.4.3 Sensitivit The sensitivities shall be as follows, when measured as speciiiected to the following tests and examinations. Fail- ure to meet any requirement Specified herein shall be considered cause for rejection. 4.5.1 Test condi
23、tions. Unless otherwise specified, the transformer shall be subjected to quality conformance tests under the following conditions: 4.5.1.1 Temperature. Room ambient 65 degrees F to 95 degrees F (18.3 degrees Centigrade (c) to 35 degrees c). 4.5.l.2 Altitude. Normal grnima. .- 9 Provided by IHSNot fo
24、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-UB( OS) 4.5.1.3 Vibration. None. 4.5.1.4 Rumidity. Room ambient to 95 percent relative maximum. 4.5.2 Test and inspection equipment and facilities. The manufacturer shall furnish and maintain all necessary test equipm
25、ent and facilities and shall provide personnel for performing all quality conformance tests. The test equipment shall be adequate in quantity and, when requirements are not specified, shall be of sufficient accuracy and quality to permit performance of the required quality conformance tests. 4.5.3 T
26、est equipment. The followlng items of test equipment are re- quired to perform the quality conformance tests set forth in this spec- if icat ion: 4.5.3 . 1 4.5.3.2 Electronic counter: Hewlett-Packard 52213, or equivalent. 4.5 . 3 . 3 Voltmeter : 4.5.3.4 Vacuum tuOe voltmeter: Hewlett-Packard Model 4
27、10B, or equivalent. 4.5.3.5 insflation and dielectric tester. . 4.5.3.6 Power source: 115 volts, 60 Hz, single phase. 4.5.3.7 Power supply: A power supply capable of supplying electrical power as specified in the following paragraphs. have switches in the output circuits capable of applying or remov
28、lng power from the test circuit without securing the power supply. These switches shall be referred to as the iixEATER POWER“ and “PLATE POWER“ switches. Heater and plate power shall be considered applied when the switches are in the ON position and removed when in the 9EF position. test circuit. Si
29、gnal generator : Hewlett -Packard 2O5AH, or equivalent Ballantine Model 300, or equivalent . “he power supply shall See Figure i. for 4.5.3.7.1 Heater power: The electrical power which is used to operate All values specified shall be measured at the power the 6AU61m filament in the transformer test
30、circuit shall meet the fol- lowing requirements. supply terminals. minus 7.5 volts direct current (vtic). 4.5.3.7.1.1 No-load voltage: With no load, the voltage shall not exceed 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-BLZLIBB 33 7777
31、70b 0358737 7 MIL-T-8L148B( OS) 4.5.3.7.1.2 Current: 4.5.3.7.1.3 Voltage: The heater will require a current of 0.3 ampere. Under a load current of 0.3 ampere, the voltage shall be minus 6.25 plus or minus 0.10 vdc. 4.5.3.7.1.4 . Internal impedance: The impedance which the power source presents to th
32、e filament at a load current of 0.3 ampere shall not exceed 400 ohms at 7 kiloHertz (Hz) 4.5.3.7.1.5 Alternating current voltage components: Under a load cur- rent of 0.3 ampere, the alternating current (ac) voltage components shall not exceed the following: 30 HZ to i50 HZ 6.0 HZ to 8.0 rn 0.09 vol
33、t root mean square (vmns) 20 microvolts rms 4.5.3.7.2 Plate power: The electrical power which is used to supply the 6Au6wB plate voltage in the transformer test circuit shall meet the following requirements. power supply terminals. All values specified shall be measured at the 9- 4.5.3.7.2.1 No load
34、 voltage: With no load, the voltage shall not ex- ceed 165 vc. 4.5.3.7.2.2 Current: The test circuit wi require a current of io milliamperes (ma) . 4.5.3.7.2.3 Voltage: Under a load current of 10 ma, the voltage shall be i50 plus or minus 1 vdc. 4.5.3.7.2.4 Internal impedance: The impedance which th
35、e pow- source presents to the test circuit at a load current of 10 ma shall not exceed 5 ohms at 7 kHz. 4 . 5 . 3 . 7.2 . 5 Alternating current voltage components : current of 10 ma, the ac voltage components shall not exceed the fol- lowing : Under a load 30 HZ to i50 m 0.2 ms 200 microvolts rms 6
36、kz to 8 kz 4.5.3.8 Electron tube: MIL-E-1, JAN 6A6. 4.5.3.9 Resistor: 150 ohms plus or minus 1 percent 1/2 W; MIL-R-10509 designation, RN65D15OOF. 11 I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-w I -. MIL-T-81L48B 13 M 7777706 0358728 O M - _.
37、. . MIL-T-81148B( OS) 4.5.3.10 Resistor: designation, RN65D2200F. 4.5.3.11 Resistor: designat ion, RN 51001. 4.5.3.E Resistor: 10509 designation, RN65D1003F. 220 ohms plus or minus 1 percent, 1/2 W; MIL-R-10509 1000 ohms plus or minus 1 percent 1/2 W; MIL-R-10509 100,000 ohms plus or minus 1 percent
38、, 1/2 W; MIL-R- 4.5,3.13 Resistor: 4.5.3.14 200,000 ohms plus or minus 1 percent 1/2 W; MIL-R- 10509 designation, RN65u2003F. 10509 designation, RN65E403F (6 required) . i0509 de signat ion, RN 5D4703F. R-10509 designation, 657503 (4 required) . Resistor: 240,000 ohms plus or minus 1 percent, 1/2 W;
39、 MIL-R- 4.5.3.15 Resistor: 4.5.3.i6 Resistor: 470,000 ohms plus or minus 1 percent, 1/2 W; MIL-R- 750,000 ohms plus or minus 0.1 percent, 1/2 W; MIL- 4.5.3.17 Resistor: 2.33 meg plus or minus 1 percent, 500 V; -R-i0509 designation, RN70DF2334F (two required) 4.5.3.18 Resistor: R-10509 designation, 6
40、57503. 4.5.3.19 Capacitor: tion, CPOgAlKC224K. 4.5.3.20 Capacitor: CPOgAlKC471G (4 required) . 4.5.3.21 Capacitor: CM20B272G (8 required) . 4.5.3.22 Capacitor: 4.5.3.23 Semiconductor device: MIL-S-19500 JAN iN458. 4.5.3.24 Semiconductor device: 750,000 ohms plus or minus 0.1 percent, 1/2 W; MIL- 0.2
41、2 uf nlus or minus 10 percent; MIL-C-25 designa- 470 uuf plus or minus 2 percent; MIL-C-25 designation, 2700 uuf plus or minus 2 percent, MIL-C-5 designation, 1000 uuf plus or minus 10 percent, 500 V, MIL-C-25 designation, CP09AlKC102K. A matched set of four l%L257 diodes, with a forward current flo
42、w of 1 milliampere; the voltage drop across the dides shall be within 1.0 millivolt of each other. 4.5.4 Test procedure. The following tests constitute the quality con- formance tests for the transformer. 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
43、S-,-,-4 - -HIL-T-JB 13 = 7777706 0358737 2 MfL-T-8=48( OS) 4.5.4.1 Connect the follwing test equipment to the power source (4.5.3.6): (a) Signal generator (4.5.3.1) (b) Electronic counter (4.5.3.2) (c) Vacuum tube voltmeter (45.3.4) (a) Voltmeter (4.5.3.3) (e) insulation tester (4.5.3.5) (f) Power s
44、upply (4.5.3.7) to warm up long enough to stabilize. 4.5.4.1.1 4.5.4.2 To measure the dc output voltage as set forth in 3.4.1: 4.5.4.2.1 Set the power switches to “ON“ and allow the test equipment Connect the transformer as shown in Figure 1. /- 4.5.4.2.2 Adjust the signal generator (4.5.3.1) for i5
45、 vrms output at a 4.5.4.2.3 Set the power supply (4.5.3.7) to plus 150 plus or minus 1 vdc 4.5.4.2.4 Set the dc voltmeter (4.5.3.3) to a convenien voltage range 4.5.4.2.5 Adjust the frequency until the voltage is zero volts and 4.5.4.2.6 The frequency shall be within the limits specified in 3.4.1.1.
46、 4.5.4.2.7 Connect the dc voltmeter to ou-bput #2 and repeat the procedures frequency of 7000 plus or minus 50 Hz. and observe the dc voltage at output #i. record this frequency. as set forth in 4.5.4.2. 4.5.4.2.8 The frequency shall be within %he limits specified in 3.4.1.2. 4.5.4.3 To determine th
47、e polmities of the output voltages as set forth in 3.4.2 4.5.4.3.1 Connect the dc voltmeter between output #i of the transformer and ground. 4.5.4.3.2 Vary the frequency of the signal generator from 6000 to 8000 Ez ana observe the polarity of the output voltage. _L_7 _ - _ ._- - ._ Provided by IHSNo
48、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-LL4B 13 7777706 0358720 7 W M 1L-T-81148( OS) 4.5.4.3.3 The polarity shall be as specified in 3.4.2.1 and 3.4.2.2. 4.5.4.3.4 Repeat the above procedure at output #2. 4.5.4.3.5 4.5.4.4 To measure the sensitivities
49、as set forth in 3.4.3: 4.5.4.4.1 The polarity shal be as specified in 3.4.2.3 and 3.4.2.4. Connect the transformer as shown in Figure 1. 4.5.4.4.2 Adjust the signal generator to provide 1-5 vrms at approximately 7000 fiz. 4.5.4.4.3 Connect the dc voltmeter to output #2 of the transformer. 4.5.4.4.4 Vary the oscillator frequency 1000 Hz above and b
