1、I INCHPOUND 1 MIL-PRF-l/594B 16 Februarv 1999 SUPERSEDING 14 January 1975 MlL-E-lI594A PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, CATHODE RAY TYPE 3BPlA This specification is approved for use by all Depart- ments and Agencies of the Deparbnent of Defense. The requirements for acquiring the elect
2、ron tube described herein shall consist of this document and the latest issue of MIL-PRF-1. DESCRIPTION: Electrostatic deflection and focus. DIMENSIONS AND PIN CONNECTIONS: See figure 1. ABSOLUTE RATINGS: Qualification - Required. AMSC N/A 1 Of5 DISTRIBUTION STATEMENT A. Approved for public release;
3、 distribution is unlimited. FSC 5960 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-PRF-L/594B 9999706 2083465 791 MIL-PRF-1 J594B TABLE I. Testina and incoection. Inspection Qualifikation inswtion Neck and bulb alignment Cathode illumination
4、Base material insulating (electrostatic types) quality Deflection factor I uniformity Direct-interelectrode Capacitance Pressure (implosion) Vibration Conformance insmction, oartl Voitage breakdown Voltage breakdown (dectrostatic types) Gas “cross“ Bulb, screen and faceplate quality Light ouiput Mod
5、ulation Spot position (ellectroctatc deflection) Spot displacement Grid cutoff voltage Grid No. 1 leakage cumnt Anode No. 2 leakage current See footnotes at end of table. Method 5101 521 6 1216 5248 1331 1141 5111 5201 5201 5206 5106 5221 5223 5231 5231 5241 5251 5251 conditions Zone 5 (minimum) Con
6、trol grid to all cathode Cathode to all Di to D2 D3toD4 D1 to all D3 to all Dl to all except D2 D2 to all except Di D3 to all except D4 D4 to all except D3 Light = 5 fL Light = 5 fL Symbol Units 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 1 MI
7、L-PRF-l/594B W 0b 20834bb 28 9 Inspection Zonformance incDection. )irr12 ieater current Electrode current anode No. 1) Electrode current cathode) Base alignment (electrostatic types) Angle between traces Neck and base alignment (electrostatic types) Stray light emission Line width “A“ Line width “B“
8、 Focusing voltage at cutoff Focusing voitage (zero bias) Deflection factor Deflection factor Heater-cathode leakage current Secureness of base, cap or insert Base pin solder depth Permanence of markina Conformance insection, m Life test Lifetest end points: Line width A“ Line width S“ Modulation MlL
9、-PRF-l/594B TABLE I. Testing and Inspection -Continued. Method 1301 5201 5201 5101 5101 5101 5216 5226 5226 5246 5246 5248 5248 5251 1101 1111 1105 conditions !cl =o jght = 5 fL c1 D2, pin No. 5 Eb2 = 2,200 V dc jght = 5 fL ight = 5 fL 1 D2 3D4 Group B; Light = 5 fL; Eb2 = 2,200 V dc; t = 500 hours
10、(minimum) Light = 5 fL Light = 5 fL Light = 5 fL Symbol - Width Width Width -_- O. 60 0.75 45 Units -.- mm mm VdC See footnotes at end of table. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 MIL-PRF-L/594B = 0b 20834b7 764 = MlL-PRF-11594B NOTE
11、S: 1. This test to be performed at the condusion of the holding period. 2. The deflecting plates shall be returned to anode No. 2 through a minimum of 2.5 megohm resistors. The light output shall be set at 5 fL. The high frequency scanning shall be applied to the deflecting plates nearest the screen
12、 and the amplitude shall be adjusted to give a line length of approximately 90 percent of the maximum tube diameter. The low frequency scanning amplitude shall be expanded to approximately 90 percent of the maximum tube diameter in the direction perpendicular to the direction of high frequency scann
13、ing. Readjustment may be made for best overall focus. (a) The tubes shall be observed for deflection defocusing, astigmatism or spot ellipticity observable to the eye as evidenced by fuzziness due to lack of sharpness of trace (usually around edges) bow-tying (irregular widths of any single line whe
14、n observed at different points) bowing of trace other than that normally caused by curvature of bulb. (b) This test for focus is to be made in addition to the line width measurements. 3. The same conditions shall be set up as described in note 2 except that the connection of deflecting elements to t
15、he low and high frequency scanning supplies shall be interchanged and the amplitudes adjusted to 90 percent of the maximum tube diameter in both directions without any adjustment of focus from note 2 conditions. An examination for defocusing, astigmatism or spot eliipticii shall be made as in note 2
16、. . 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-/i Dimensions Inches Millimeter Conformance ins tion, art 2 2.937 3.063 74.60 77.80 B See note 1 C 1.937 I 2.063 I 49.20 I 52.40 D 9.750 I 10.250 I 247.65 I 260.35 9.250 234.95 3.875 8.000 R 203.2
17、0 R NOTES: 1. The minimum useful screen radius shall not be less than 1.375 inches (34.93 rnm). 2. The base shall be a medium shell DIHEPTAL 12-pin (812-37) type. 3. The bulb shall be a J24G type. 4. Reference dimensions are for information only and are not required for inspection purposes. FIGURE 1
18、. Outline drawino for electron tube WLE 3BPlA. Custodian: Amy - CR Navy - EC Air Force - 85 Preparing activity: DIA - CC (Project 5960-3473-02) Review activities: Navy - MC Air Force - 17.99 Amy - MI 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
