DLA MIL-PRF-27 76 D-2009 TRANSFORMERS AUDIO FREQUENCY.pdf

1、AMSC N/A FSC 5950 MIL-PRF-27/76D 29 September 2009 SUPERSEDING MIL-PRF-27/76C 9 July 1981 PERFORMANCE SPECIFICATION SHEET TRANSFORMERS, AUDIO FREQUENCY This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the products d

2、escribed herein shall consist of this specification and MIL-PRF-27. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Marking shall be on the side of the case. 4. Terminals are spaced the same as “TO-5” transistor and micrologic elements. 5. Termina

3、l one located 45C from centerline, as noted. 6. Primary and secondary electrical values shall be marked as specified in table I, as applicable. FIGURE 1. Dimensions and configuration INCH-POUND Inches mm .002 .010 .031 .035 .063 .077 .125 .350 .562 .875 0.05 0.25 0.79 0.89 1.60 1.96 3.18 8.89 14.27

4、22.22 PRI“X“ OHMS CT4 SEC5 “X“ OHMS CT634 SEC5 “X“ OHMS674 SEC“X“ OHMS5PRI“X“ OHMS CTA B345“X“ OHMSC D“X“ OHMSPRI SEC5.562MAX.350DIA. MAX.45+ +123456.125 DIA. .010WORKING VOLTAGE (PEAK) : 50 VALTITUDE : 150,000 FT. MAX.(SEE TABLE I FOR VALUE OF “X“ )CIRCUIT DIAGRAM AND MARKING.875 .125.063 DIA. KEY

5、ONMOISTUREBARRIER OFFSETOPTIONAL“X“ OHMS CT PRI 2132132112.077.002Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/76D 2 REQUIREMENTS: (When numbers in parentheses, such as (1.-3) are used, they indicate the winding and the extreme terminal

6、s of the winding.) Electrical ratings: See table I. Working voltage (peak): 50 volts. Frequency range: 300 hertz to 20 kilohertz. Design and construction: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Altitude: 150,000 feet, maximum. Terminals: Dumet wire le

7、ads. Material: Tin-lead plated type D4 in accordance with MIL-STD-1276. Diameter: .016 inch (0.41 mm) Length: .875 .125 inch (22.23 3.18 mm). Weight: 3.55 grams, maximum. Operating temperature range: -55C to +105C. Terminal strength: MIL-STD-202, method 211, test condition A, 2 pounds. Dielectric wi

8、thstanding voltage: At sea level: 100 volts rms. At reduced barometric pressure: 100 volts rms. Electrical characteristics: See table II. No load (centertap unbalance only): 1 percent with 5 volts, 5 kilohertz across the primary. Harmonic distortion: Total harmonic content of the output shall be a m

9、aximum 3 percent at the specified power level and primary dc current (see table I). Insertion loss: At the specified power level (see table I), the insertion loss shall be a maximum of 3.5 dB. Frequency response: 3 dB at the rated source and load impedances (see table II) with 1 milliwatt level outp

10、ut and a reference frequency of 1 kilohertz. Vibration, high frequency: MIL-STD-202, method 204, test condition D. Marking location: See figure 1. Part or Identifying Number (PIN): M27/76-(dash number from table I). Provided by IHSNot for ResaleNo reproduction or networking permitted without license

11、 from IHS-,-,-MIL-PRF-27/76D 3 TABLE I. Electrical ratings. 1/ 2/ Dash No. Circuit diagram (see figure 1) Primary impedance (ohms) Secondary 2/ impedance (ohms) Primary DC current (mA) Power level At 1 kHz (max) (mW) Primary DC resistance 25% (ohms) Secondary DC resistance 25% (ohms) 01 A 200,000 CT

12、 (1-3) 1,000 CT (4-6) 0 25 9,000 100 02 A 20,000 CT (1-3) 30,000 CT 800 CT (4-6) 1,200 CT 0.5 50 830 115 03 A 10,000 CT (1-3) 12,000 CT 10,000 CT (4-6) 12,000 CT 1 100 975 1175 04 D 10,000 CT (1-2) 12,000 CT 2,000 CT (3-5) 2,500 CT 1 100 780 190 05 B 10,000 CT (1-3) 12,000 CT 2,000 SPLIT (4-7) 2,400

13、 SPLIT 1 100 560 230 06 A 10,000 CT (1-3) 12,000 CT 1,500 CT (4-6) 1,800 CT 1 100 780 126 07 C 1,000 CT (1-3) 1,200 CT 50 (4-5) 60 3 100 115 8 1/ Qualification testing and approval to M27/76-01 shall be sufficient to grant qualification approval to M27/76-02 through M27/76-07. 2/ Impedance values wr

14、itten one above the other indicate a range of matching impedances over which the parts will give satisfactory performance as long as the impedance ratio is maintained. 3/ Where windings are listed as SPILT, one-fourth of the listed impedance is available by paralleling the winding. TABLE II. Electri

15、cal characteristics. Dash No. Frequency response 3 dB At 300 Hz to 20 kHz and 1 mW Resonance resonant frequency (min) (kHz) Polarity: Additive With terminals (below) connected ZS(ohms) ZL(ohms) 01 200,000 (1-3) 1,000 (4-6) 100 3 and 4 02 20,000 (1-3) 800 (4-6) 100 3 and 4 03 10,000 (1-3) 10,000 (4-6

16、) 400 3 and 4 04 10,000 (1-2) 2,000 (3-5) 400 2 and 3 05 10,000 (1-3) 2,000 (4-7) 400 (3-4) and (5-6) 06 10,000 (1-3) 1,500 (4-6) 400 3 and 4 07 1,000 (1-3) 50 (4-5) 400 3 and 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/76D 4 Changes

17、 from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors

18、are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Referenced documents. In addition to MIL-PRF-27, this document references the following: MIL-STD-202 MIL-STD-1276 Custodians: Pr

19、eparing activity: Army - CR DLA CC Navy - EC Air Force - 85 (Project 5950-2009-025) DLA - CC Review activities: Army - AR, MI Navy - AS, MC, OS, SH Air Force - 19, 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of this information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-