1、AMSC N/A FSC 5950 INCH-POUND MIL-PRF-27/2G 13 July 2012 SUPERSEDING MIL-PRF-27/2F 23 July 1990 MILITARY SPECIFICATION SHEET TRANSFORMERS, AUDIO FREQUENCY This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The complete requirements for procuring the
2、 transformer described herein shall consist of this document and the latest issue of specification MIL-PRF-27. Working voltage = 50 V rm Freq. range: 250 to 5,000 Hz Power level: 2 watts. NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. FIGURE 1. Dime
3、nsions and configurations. Inches mm .002 0.05 .005 0.13 .010 0.25 .020 0.51 .025 0.64 .041 1.04 .157 3.99 .490 12.45 .680 17.27 .796 20.22 1.200 30.48 1.332 33.83 1.400 35.56 1.593 40.46 1.695 43.05 Part number M27/1-01 is inactive for new design after 4 April 1985. For new design use M27/2-02. Pro
4、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-27/2G 2 REQUIREMENTS: (When numbers in parentheses, i.e., (1-2) are used, they indicate the winding and the extreme terminals of the winding.) Electrical rating: Primary power level: 2 W at 1 kHz.
5、Working voltage (peak): 50 volts. Design, configuration, and physical dimensions: See figure 1. Material: Metal encased, steel. Weight: 4 ounces, maximum. Duty cycle: Continuous. Terminal: Solder lug, number 18 AWG, stand-off type. Temperature range: See table I. Terminal strength: Method 211 of MIL
6、-STD-202, test condition A, 5 pounds. Dielectric withstanding voltage: Method 201 of MIL-STD-202; test voltage, 500 V rms. Electric characteristics: Harmonic distortion: Not more than 1 percent at 2 W 1 dB at 1 kHz. Primary impedance: 600 60 ohms (1-2). Secondary load impedance: 8 1 ohms (3-4). DC r
7、esistance (DCR): Primary DCR: 25 ohms 25 percent. Secondary DCR: 0.48 ohm 25 percent. Frequency response: Range: 250 Hz to 5,000 Hz at rated power, flat within 2 dB; reference frequency 1 kHz; test voltage 34.6 V rms (1-2). Insertion loss: 0.5 dB maximum, with 2 W input at 1 kHz. Polarity: Additive,
8、 with terminals 2 and 3 connected. Temperature rise: See table I. Vibration, high frequency: Method 204, test condition B. Shock (specified pulse): Method 213, test condition H. Part or identifying number (PIN): M27/2-(dash number from table I). Provided by IHSNot for ResaleNo reproduction or networ
9、king permitted without license from IHS-,-,-MIL-PRF-27/2G 3 TABLE I. Temperature characteristics. Dash number Temperature Maximum operating temperature with rated power at 300 Hz Temperature rise Ambient temperature -01 -55C to +105C 40C maximum 65C -02 -55C to +130C 40C maximum 90C Changes from pre
10、vious 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 are cauti
11、oned 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 Custodians: Preparing activity: Army
12、 - CR DLA - CC Navy - EC Air force - 85 DLA CC (Project 5950-2009-093) Review activities: Army AR, CR4 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 the information above using the ASSIST Online database at https:/assist.dla.mil Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
