Handbook of Small Electric Motors MAZ Part 3 docx

... photo 6. 138 pin 6. 138 Schottky 6. 138 step recovery 6. 138 tunnel 6. 138 types of 6. 138 varactor 6. 138 zener 6. 137 6. 138 Diopter 3. 23 Direct ... 10. 53 springs 7 .3 7. 23 switchgear components 6.88 Index Terms Links Optics 3. 19 Abbe number 3. 34 achromatic lenses 3. 33...

Ngày tải lên: 11/08/2014, 07:23

... 2.51n Magnetizers: capacitive-discharge, 2. 93 2.97, 3. 138 3. 147 fixtures for, 2.97–2.99, 3. 133 3. 137 overview, 2.91–2. 93, 3. 124 3. 130 safety factors, 2.99–2.100, 3. 141, 3. 146 3. 147 types of, 2. 93 2.97, 3. 130 3. 133 Magnetizing ... 2.95, 3. 144 thermal, 8. 13 8.16, 8 .31 –8 .32 Capacitive-discharge magnetizers, 2. 93 2.97, 3. 131 3. 133 CDM systems, 3. 138 3. 142,...

Ngày tải lên: 11/08/2014, 07:23

... K 2 I a + K 3 I 2 a )]V = 0 (4 .36 ) −2K 3 I 2 a + K 1 + K 3 I 2 a = 0 (4 .37 ) K 3 I 2 a = K 1 (4 .38 ) Thus, for maximum efficiency the constant losses must be equal to those that vary as the square of the ... (4. 132 ) The angle within TR1 that the arc of radius R as sweeps is θ as = 90°−θ TR1 (4. 133 ) The area of triangle TR1 is A TR1 = (4. 134 ) The area of the slot SEG2...

Ngày tải lên: 11/08/2014, 07:23

... sales of servo electric motors at Moog, Inc., and in sales of specialty motors at Doerr Electric. He is currently the vice president of Oven Systems, Inc. ANDREW E. MILLER (Secs. 4.5, 6.4 .3, and ... book. WILLIAM H. YEADON, P.E. (Secs. 1. 13, 2.1, 2.9, 2.11, 3. 10 to 3. 12, 4 .3, 4.6 to 4.8, 5.1 to 5 .3, 6.1, 6.4, 7.1 to 7.4, and 8.1 to 8 .3) is president of Yeadon Engineeri...

Ngày tải lên: 11/08/2014, 07:23

... for Small Electric Motors / 3. 46 3. 12. Sleeve Bearings / 3. 72 3. 13. Process Control in Commutator Fusing / 3. 79 3. 14. Armature and Rotor Balancing / 3. 87 3. 15. Brush Holders for Small Motors / 3. 99 3. 16. ... 3. 7. Wound Stator Assembly Processing / 3. 21 3. 8. Armature Manufacturing and Assembly / 3. 22 3. 9. Assembly,Testing, Painting, and Packing / 3. 23...

Ngày tải lên: 11/08/2014, 07:23

... 450 30 0 4.99 0.180 2 8.4 0.14 0 .36 2. 63 0 .38 0 Ceramic 5 3. 95 2.45 3. 50 450 30 0 4.99 0.180 3 27.9 0.46 0.54 1.18 0.845 Ceramic 8 3. 90 3. 25 3. 50 450 30 0 4.99 0.180 4 27.9 0.46 0.72 1.58 0. 634 Ceramic ... 18 775 250 8 .30 0 .30 0 110 1 43. 2 2 .35 32 .95 14.04 0.071 SmCo 22 9.85 8.75 22 820 250 8 .30 0 .30 0 120 175.1 2.87 35 .95 12. 53 0.080 SmCo 26 HS 10.60 9.80 27...

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... Frequency For f 2 = 60 Hz/s f 1 ,Hz aa 2 (a − 1) 50 1.200 1.440 0.200 45 1 .33 3 1.777 0 .33 3 40 1.500 2.250 0.500 35 1.715 2.941 0.715 30 2.000 4.000 1.000 25 2.400 5.760 1.400 MATERIALS 2.19 FIGURE 2.28 ... silicon-iron electrical steels at 60 cps. 2 .32 CHAPTER TWO FIGURE 2.42 Magnetization curves for electrical grade (AISI M -36 ), metric units. FIGURE 2. 43 Magnetization curves for e...

Ngày tải lên: 11/08/2014, 07:23

... size, mm 1 0.00 03 0.0006 +0.0000 +0.0000 0–18 −0.00 03 −0.00 03 +0.0000 >18 30 −0.00 035 3 0.00 03 0.0004 +0.0000 +0.0000 0 30 −0.0002 −0.00 03 5 0.00015 0.0002 +0.0000 +0.0000 0 30 −0.0002 −0.0002 7 ... 3. 27 Cleat specs. Basic dimensions may vary, but tolerances should remain the same. (Courtesy of Windamatic, Inc.) 3. 36 CHAPTER THREE FIGURE 3. 32 Typical two-pole motor...

Ngày tải lên: 11/08/2014, 07:23

... 2 3 2 1 1 ⁄2 61 — 21 1 3 1 ⁄2 11 3 ⁄4 NP* X — 242442NPX81 27 1 4 1 ⁄2 12 1 ⁄4 31 1 ⁄2 11 1 ⁄8 30 2 5 2 2 1 ⁄2 NP X 2 1 1 ⁄4 33 1 5 1 ⁄2 12 3 ⁄4 NP X 1 1 3 ⁄8 36 26 436 2 41 1 ⁄2 39 1 6 1 ⁄ 2 13 1 ⁄ 4 ... COMMUTATED MOTORS 5.21 TABLE 5.6 Densities of Common Magnetic Materials Density Material lb/in 3 oz/in 3 g/cm 3 Bonded ferrite 0. 134 2.14 3. 71 Sintered ferrite 0...

Ngày tải lên: 11/08/2014, 07:23

... area of secondary tooth B = coil span B t1 = density of primary tooth B t2 = density of secondary tooth B c1 = density of primary core B c2 = density of secondary core C = total number of series ... 6. 13 the stationary axis q is in the same direction as the assumed positive direction of mmf a , whereas the assumed positive direction of the d axis is the negative of the pos...

Ngày tải lên: 11/08/2014, 07:23