DLA MIL-PRF-27 79 A-2009 TRANSFORMERS AUDIO FREQUENCY.pdf

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1、AMSC N/A FSC 5950 MIL-PRF-27/79A 9 November 2009 SUPERSEDING MIL-PRF-27/79 29 August 1975 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 sheet and MIL-PRF-27. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Marking shall be on top of the case. FIGURE 1. Dimensions and configuration INCH-POUND .030 DIA. 1.125 MAX. .200 .010 .800 .0

3、10 .400 .010 .400 .010 .200 .010 .122-40 X 16UNC-2B (2 REQD.) 10 K CT 355 W V MAX. 600 CT 175 W V MAX. CIRCUIT DIAGRAM AND MARKING 56781234.046 1.000 MAX. .500 .031 1.085 MAX. 315672.800 .010.187 .020 .142 .020 Inches mm .010 .020 .030 .031 .045 .142 .187 .200 .400 .500 .800 1.000 1.085 1.125 .254 .

4、508 .762 .7874 1.143 3.6068 4.7498 5.08 10.16 12.70 20.32 25.40 27.56 28.58 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/79A 2 REQUIREMENTS: (When numbers in parentheses, such as (1.-3) are used, they indicate the winding and the extrem

5、e terminals of the winding.) Electrical ratings: Source impedance (1-3): 10k ohms ct 10 percent. Load impedance (5-7): 600 ohms ct. Primary power level: 6 watts maximum (200 Hz to 10 kHz) 25 watt (60 Hz to 200 Hz) Working voltage: (1-3) 355 volts maximum. (5-7) 175 volts maximum. Design and construc

6、tion: Dimensions and configuration: See figure 1. Duty cycle: Continuous. Case: Encapsulated. Material: Epoxy glass. Terminals: Pin type, Dumet, hot tin dipped. Weight: 2.5 ounces, maximum. Operating temperature range: -55C to +130C. Terminal strength: MIL-STD-202, method 211, test condition A, 2 po

7、unds. Dielectric withstanding voltage (at sea level): 1,000 volts rms (1-3) and 500 volts rms (5-7) Electrical characteristics: Harmonic distortion: Not more than 10 percent at 6 watts, 200 Hz to 10 kHz across (5-7). Primary impedance (1-3): 10k ohms ct 10 percent at 1 kHz. Secondary load impedance

8、(5-7): 600 ohms ct. Frequency response: 60 Hz to 10 kHz 1 dB maximum. DC resistance: Primary (1-3): 700 ohms 25 percent. Secondary (5-7): 50 ohms 25 percent. No load (center tap (ct) voltage unbalance only): With 50 volts, 60 Hz and 0 amp voltage unbalance dc applied to (1-3) Unbalance (1-2) and (2-

9、3): 1 percent maximum. Unbalance (5-6) and (6-7): 1 percent maximum. Polarity: Additive, with terminals 3 and 5 connected. Temperature rise: 45C. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/79A 3 Vibration, high frequency: MIL-STD-202,

10、 method 204, test condition B. Shock (specified pulse): MIL-STD-202, method 213, test condition H. Marking location: See figure 1. Part or Identifying Number (PIN): M27/79-01 Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from

11、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 are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal n

12、otations and relationship to the last previous issue. Referenced documents. In addition to MIL-PRF-27, this document references the following: MIL-STD-202 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5950-2009-002) DLA - CC Review activities: Army - AR, CR4, M

13、I 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-,-,-