1、AMSC N/A FSC 5950 INCH-POUND MIL-T-27/11B 9 November 2009 SUPERSEDING MIL-T-27/11A 6 December 1976 MILITARY SPECIFICATION SHEET TRANSFORMER, AUDIO FREQUENCY This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the trans
2、former described herein shall consist of this specification sheet and MIL-PRF-27. FIGURE 1. Dimensions and configurations. 1.125 DIA (MAX) TERMINAL MTG. AREA CIRCUIT DIAGRAM .1 W, minimum. Working voltage (1-3): 525 V, maximum. (4-5): 175 V, maximum. (6-7): 175 V, maximum. Primary current: .020 ampe
3、re dc through terminal 2, .001 ampere dc, maximum unbalanced. Primary impedance (1-3): 60,000 ohms ct. Design and construction: Dimensions and configuration: See figure 1. Material: Metal encased, steel. Weight: .72 pound, maximum. Duty cycle: Continuous. Altitude: 50,000 feet, maximum. Life expecta
4、ncy: 10,000 hours, minimum. Operating temperature range: -55C to +105C. Terminals: Solder terminals, No. 18 AWG. Height: .375 (9.53 mm) +.000 (0.00 mm) -.188 (4.78 mm). Terminal strength: MIL-STD-202, method 211, test condition A, 5.0 pounds. Dielectric withstanding voltage: MIL-STD-202, method 301
5、At sea level: 1,500 volts rms. At reduced barometric pressure: 500 volts rms. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-27/11B 3 Electrical characteristics: Harmonic distortion: Not more than 1 percent with 173 V, 300 Hz across (1-3) and
6、.020 ampere dc through terminal 2. No load (center tap voltage unbalance only): With 173 V, 1,000 Hz across (1-3) and .020 ampere dc through terminal 2. Unbalance (4-5) and (6-7): 1 percent, maximum. Unbalance (1-2) and (2-3): 1 percent, maximum. Secondary load impedance: (4-5) 150 ohms. (6-7) 150 o
7、hms 10 percent. (4-7) 600 ohms ct. Primary impedance: With approximately 10 V, 1,000 Hz across (1-3) and .020 ampere through terminal 2 and 600 ohms ct across (4-7), the primary impedance shall be 60,000 ohms ct 10 percent across (1-3). Frequency response: Range: 300 to 10,000 Hz at rated power, fla
8、t within 2 dB; reference frequency: 1,000 Hz; test voltage 10 V rms (1-3). Insertion loss: 1.5 dB maximum, with 173 V, input at 1,000 Hz across (1-3). Resonance: Second resonant frequency = 20,000 Hz, minimum. Polarity: Additive, with terminals 3 and 4, and 5 and 6 connected. Temperature rise: 20C m
9、aximum, above an ambient temperature of 85C, with rated power at 300 Hz. Vibration, high frequency: MIL-STD-202, method 204, test condition B. Shock (specified pulse): MIL-STD-202, method 213, test condition I. Part or Identification Number (PIN): M27/11-01*. * = See table I for mounting type. TABLE
10、 I. Cross reference. Mounting MS90008 M27/11 Dash no. Type designation Dash no. Type designation Studs -A TF4RX13AJ005 -01A TF4R21AJ Inserts -B TF4RX13AJ005 -01B TF4R21AJ NOTE: Qualification approval to MIL-T-27/11 shall be sufficient to grant qualification approval to MIL-T-27/3 through MIL-T-27/10
11、. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-27/11B 4 Changes 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
12、 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 notations and relationship to the last previous issue. Refere
13、nced 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 5950-2009-006) DLA - CC Review activities: Army - AR, CR4 Navy - AS, MC Air Force - 19, 99 NOTE: The activities listed
14、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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
