DLA MIL-PRF-1 507H-2004 ELECTRON TUBE MAGNETRON PULSE TYPE 7452A.pdf
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1、INCH POUND MIL-PRF-1/507H 27 February 2004 SUPERSEDING MIL-PRF-1/507G 27 January 1999 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, MAGNETRON, PULSE TYPE 7452A This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the e
2、lectron tube described herein shall consist of this document and the latest issue of MIL-PRF-1. DESCRIPTION: 16.0 GHz fixed frequency, 85 kw peak power output, integral 2-symmetrical-lobe magnet, air cooled. OUTLINE AND DIMENSIONS: See figure 1 herein. Weight: 25 lbs., approx. ABSOLUTE RATINGS: (not
3、e 1) Parameter: Ef eb if(surge) tk Anode T VSWR Cathode (bushing)T Unit: V kv a sec C ratio C Maximum: 5.5 30 24 - - - +125 1.5:1 +200 Minimum: - - - (note 2, 3) - - - - - - (note 3) 180 - - - (note 4) - - - - - - (note 4) Parameter: Ib ib Pi pi Du tpc Pressurized (Output) Unit: mA dc a W kw - - - s
4、ec psia Maximum: 30 14 780 315 0.0028 0.6 45 Minimum: - - - 10 - - - - - - - - - - - - (note 5) 14.7 (notes 6, 7) TEST CONDITIONS: (Notes 8, 9) Parameter: Ef Ib VSWR Du tpc tfc trv F Unit: V mA dc ratio - - - sec sec sec GHz Maximum: 4.8 26 1.1:1 - - - 0.275 0.15 0.14 16.160 Minimum: - - - (note 2)
5、22 (note 2) - - - (notes 7, 10) 0.00215 0.225 - - - 0.09 15.840 MOUNTING POSITION: Vertical (note 9) INPUT CONNECTION: (See figure 1 herein) OUTPUT CONNECTION: Waveguide choke coupling flange, modified UG-541/U (See figure 1 herein) COOLING: Forced-air (See figure 1, note 14 herein) MAGNET ISOLATION
6、: (note 11) MOUNTING PROVISION: (See figure 1, note 20, herein). HANDLING-STRESS CAUTION: (note 12) GENERAL: Qualification: Not required. Preproduction sample approval: Required; (note 13) Dimensions: (See figure 1) Marking: (notes 14, 15) Packaging: (note 16) AMSC N/A FSC 5960 Provided by IHSNot fo
7、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/507H 2 TABLE I. Testing and inspection. * Requirement or test MIL-STD-1311 method Conditions Acceptance levels (see note 35) Symbol Limits Min Limits Max Units Conformance inspection, part 1 Visual-mechanical exam
8、ination Pressurizing Heater current Oscillation (1) Heater-cathode warm-up time Frequency Pulse characteristics Pulse voltage Average anode current Average power output Spectrum measurement: RF bandwidth Stability - - - 4003 4289 - - - 4303 - - - 4304 4306 - - - 4250 4308 4315 (note 17) See fig. 1 A
9、ir; 50 psia, min. Output assembly (note 18) Ef = 4.8 V tk=180 sec., (min.) (note 3) VSWR = 1.1:1 max. (notes 1, 2, 8) Ef = 4.8V tk = 180 sec (max.) Ef = 0.0V for test Anode T = +70 15C (notes 4, 19) (notes 20, 21) - - - Ib = 26 mA dc - - - VSWR = 1.5:1 (note 22) VSWR = 1.5:1 (note 23) - - - 0.65 0.6
10、5 0.65 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - If - - - - - - F - - - epy - - - Po BW MP - - - - - - 10.8 - - - - - - 15.840 - - - 22 - - - 150 - - - - - - - - - - - - 13.2 - - - - - - 16.160 - - - 26 - - - - - - 8 0.75 - - - - - - A - - - - - - GHz - - - kv - - - W MHz % Conform
11、ance inspection, part 2 High-frequency vibration: RF bandwidth Frequency pulling factor 1031 4308 4310 No voltages (note 24) VSWR = 1.5 Ib = 22-26 mA dc (Osc. (1) VSWR = 1.5:1, (note 25) 6.5 - - - 6.5 - - - BW F - - - - - - - - - - - - 8 25 - - - MHz MHz See notes at end of Table I. Provided by IHSN
12、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/507H 3 TABLE I. Testing and inspection - Continued. * Requirement or test MIL-STD-1311 method Conditions Acceptance levels (see note 35) Symbol Limits Min Limits Max Units Conformance inspection, part 2 -cont
13、inued. Frequency pushing factor 4311 (Osc.(1) VSWR = 1.1:1 (max.) Swept: 22 to 26 mA dc at 50 Hz rate 6.5 F - - - 3.5 MHz/mA Conformance inspection, part 3 Cycling life Life-test end-points (Osc. (1): Periodic check, (notes 28, 29, 30) Salt spray (corrosion) Humidity Shock Input capacitance Temperat
14、ure coefficient Low-pressure Low-temperature operation - - - (4.6.2) 1006 1011 1042 4266 4027 - - - 1026 Group D (Osc.(1) VSWR = 1.5:1, min. Cycle thru g/2 ea. 15 minutes of oscillation (note 26) Aver. power output Pulse voltage Fixed tuned frequency RF bandwidth Stability Freq. drift, (note 27) Nor
15、mal mounting. Test cond. A except G = 15 (peak) (note 31) Heater to anode (Osc. (1) VSWR = 1.1:1 Anode T = +55 to +85C (note 4) (Osc. (1) VSWR = 1.5:1 Pressure = 522 mmHg (note 32) Pre-test cooling = 60 minutes at -65C (Osc.(1); Stability test requirements; tk = 180 sec., max. (note 23) - - - - - -
16、- - - - - - - - - - - - - - - - - - - - - N Po epy F BW MP F - - - - - - - - - C F/C - - - MP 175 120 22 15.840 - - - - - - - - - - - - - - - - - - 10 - - - - - - - - - - - - - - - 26 16.160 8 1.0 2 - - - - - - - - - 20 0.75 - - - 2.0 cycles W kv GHz MHz % MHz/hr - - - - - - - - - pF MHz/C - - - % S
17、ee notes at end of Table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/507H 4 TABLE I. Testing and inspection - Continued. * Requirement or test MIL-STD-1311 Method Conditions Symbol Limits Min Limits Max Units Conformance inspection,
18、part 3 -continued. Frequency Air cooling - - - - - - (Osc.(1) (notes 4, 19, 33) (Osc.(1) TA = +25 C Pi = 624 W 10% Air flow = 40 cfm (note 34) F T 15.840 - - - 16.160 +70 GHz C NOTES: 1 Refer to MIL-PRF-1, section 3 definition of absolute ratings. 2 Prior to application of high voltage, the filament
19、 current applied should be between 10.8 and 13.2 amperes. The procedure should include, first, applying 4.8 volts for 180 seconds minimum to filament; then, upon application of anode voltage, the heater voltage should be reduced until the anode current is 26 mA dc. 3 The heater surge current should
20、not be allowed to exceed 24 rms amperes. 4 Refer to figure 1, notes 12 and 21 herein for temperature-measurement point. Temperature shall be measured after thermal equilibrium has been reached. 5 The characteristics of the applied pulse must be those which result in proper starting and oscillation.
21、The rate of pulse voltage rise, the percentage of pulse voltage ripple, and the rate of the pulse voltage fall are among the more important considerations. Negative post-pulse voltage oscillations may cause leakage current and noise. The established pulse characteristics (refer to Oscillation (1) pu
22、lse characteristics, herein) should be adhered to. 6 The gas used in pressurization shall provide insulating properties equal to or better than that of dry air at the pressure specified. 7 The waveguide must be pressurized at 14.7 psia, minimum, to prevent breakdown under matched conditions, VSWR =
23、1.1 maximum. Under mismatch conditions, VSWR = 1.5 maximum, the waveguide must be pressurized at 35 psia, minimum. 8 Unless otherwise specified for a particular test parameter (see testing program table herein), the cooling and pressurization requirements-data indicated herein shall be effective whe
24、rever applicable throughout the testing program. 9 The tube shall be mounted with the cathode vertical to within 15 deviation. 10 Output window shall be pressurized at 14.7 psia. 11 During handling, transportation, mounting, and use, care must be exercised to prevent demagnetization. Ferromagnetic m
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