{"id":361,"date":"2014-01-11T10:20:25","date_gmt":"2014-01-11T02:20:25","guid":{"rendered":"http:\/\/www.zyneng.com\/?p=361"},"modified":"2019-08-03T09:09:49","modified_gmt":"2019-08-03T01:09:49","slug":"%e4%b8%93%e5%88%a9us6545444-%e5%88%a9%e7%94%a8%e5%8d%95%e6%9e%81%e7%94%b5%e6%9c%ba%e5%88%b6%e9%80%a0%e5%8f%8d%e7%94%b5%e5%8a%a8%e5%8a%bf%e5%85%85%e7%94%b5%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.zyneng.com\/?p=361","title":{"rendered":"\u4e13\u5229US6545444\u2014\u2014\u5229\u7528\u5355\u6781\u7535\u673a\u5236\u9020\u53cd\u7535\u52a8\u52bf\u5145\u7535\u7684\u65b9\u6cd5\u548c\u8bbe\u5907"},"content":{"rendered":"
\n

\n\t \n<\/p>\n

\n\t\"US06545444-20030408-D00000\"\n<\/p>\n

\n\t\"US06545444-20030408-D00002\"\n<\/p>\n

\n\t\"US06545444-20030408-D00003\"\n<\/p>\n

\n\t\u88c5\u7f6e\u8fd0\u884c\u539f\u7406\u8be6\u89e3\u3002<\/span><\/span><\/strong>\n<\/p>\n

\n\tFirst, the switch 12 is closed. Because the transistor 14 is off, no current flows through the winding 13a.<\/span>\n<\/p>\n

\n\t\u9996\u5148\uff0c\u5f00\u5173 12 \u88ab\u5173\u95ed\uff0c\u56e0\u4e3a\u4e09\u6781\u7ba1 14 \u662f\u6ca1\u6709\u5bfc\u901a\u7684\uff0c\u6ca1\u6709\u7535\u6d41\u6d41\u8fc7\u7ebf\u570813a\u3002<\/span>\n<\/p>\n

\n\tNext, the motor is started by rotating the rotor 20, say, in a clockwise direction. The rotor may be rotated by hand, or by a conventional motor-starting device or circuit (not shown).<\/span>\n<\/p>\n

\n\t\u4e0b\u4e00\u6b65\uff0c\u7535\u673a\u53ef\u4ee5\u901a\u8fc7\u65cb\u8f6c\u8f6c\u5b5020\u542f\u52a8\uff0c\u5047\u8bbe\u5728\u4e00\u4e2a\u987a\u65f6\u9488\u65b9\u5411\u7684\u65b9\u5411\u3002\u8f6c\u5b50\u53ef\u4ee5\u7528\u624b\u4f7f\u5176\u65cb\u8f6c\uff0c\u6216\u85c9\u7740\u4e00\u4e2a\u4f20\u7edf\u7684\u542f\u52a8\u7535\u52a8\u673a\u8bbe\u5907\u6216\u7535\u8def\u3002 \uff08\u4e0d\u663e\u793a\uff09\u3002<\/span>\n<\/p>\n

\n\tAs the rotor 20 rotates, the pole 19 moves from the three o'clock position towards the pole piece 18b and generates a magnetic flux in the windings 13a,13b and13c. More specifically, the stator 18a and the pole piece 18b include a ferromagnetic material such as iron. Therefore, as the pole 19 moves nearer to the pole piece 18b, it magnetises the pole piece 18b to a polarity – South in this instance – that is opposite to the polarity of the pole 19 (which is North). This magnetisation of the pole piece 18b generates a magnetic flux in the windings 13a-13c. Furthermore, this magnetisation also causes a magnetic attraction between the pole 19 and the pole piece 18b. This attraction pulls the pole 19 toward the pole piece 18b, and thus reinforces the rotation of the rotor 20.<\/span>\n<\/p>\n

\n\t\u5982\u679c\u8f6c\u5b50 20 \u65cb\u8f6c\uff0c\u78c1\u678119 \u4ece\u4e09\u70b9\u949f\u4f4d\u7f6e\u79fb\u52a8\u5411\u7ebf\u5708\u94c1\u82af18b \uff0c\u800c\u4e14\u5728\u7ebf\u5708 13 a\u300113 b \u548c 13 c\u4e2d\u4ea7\u751f\u78c1\u6d41\u3002\u66f4\u5177\u4f53\u7684\uff0c\u5b9a\u5b5018a\u548c\u78c1\u82af18b\u7531\u94c1\u78c1\u6750\u6599\u7ec4\u6210\uff0c\u4f8b\u5982\u94c1\u3002\u56e0\u6b64\uff0c\u5f53\u78c1\u678119\u9760\u8fd118b\uff0c\u5b83\u78c1\u531618b\u53d8\u6210\u5357\u6781\uff0c\u4e0e\u78c1\u678119\uff08\u5317\u6781\uff09\u7684\u78c1\u6781\u76f8\u53cd\u300218b\u78c1\u5316\u5728\u7ebf\u570813a—13c\u4e2d\u4ea7\u751f\u78c1\u6d41\u3002\u8fdb\u4e00\u6b65\uff0c\u78c1\u5316\u5f15\u8d77\u4e00\u4e2a\u5438\u529b\u3002\u5438\u529b\u62c9\u52a8\u78c1\u678119\u541118b\u79fb\u52a8\uff0c\u56e0\u6b64\u589e\u5f3a\u4e86\u8f6c\u5b5020\u7684\u65cb\u8f6c\u3002<\/span>\n<\/p>\n

\n\t \n<\/p>\n

\n\tThe magnetic flux in the windings 13a-13c generates voltages across their respective windings. More specifically, as the pole 19 rotates toward the pole piece 18b, the magnetisation of the stator 18a and the pole piece 18b, and thus the magnetic flux in the windings 13a-13c, increases. This increasing flux generates voltages across the windings 13a-13c such that the dotted (top) end of each winding is more positive than the opposite end. These voltages are proportional to the rate at which the magnetic flux is increasing, and so, they are proportional to the velocity of the pole 19.<\/span>\n<\/p>\n

\n\t\u5728\u7ebf\u570813a-13c\u4e2d\u5404\u81ea\u4ea7\u751f\u7535\u538b\u3002\u7ebf\u5708\u4e0a\u9762\u7684\u70b9\u6bd4\u4e0b\u9762\u7684\u66f4\u591a\u6b63\u6781\u6027\u3002\u8fd9\u4e9b\u7535\u538b\u4e0e\u78c1\u675f\u589e\u52a0\u7684\u901f\u7387\u6210\u6bd4\u4f8b\u5173\u7cfb\uff0c\u56e0\u6b64\uff0c\u4ed6\u4eec\u4e0e19 \u7684\u901f\u5ea6\u6210\u6bd4\u4f8b.<\/span>\n<\/p>\n

\n\tAt some point, the voltage across the winding 13b becomes high enough to turn the transistor 14c on. This turn- on, i.e., trigger, voltage depends on the combined serial resistance of the potentiometer 15 and the resistor 16. The higher this combined resistance, the higher the trigger voltage, and vice-versa. Therefore, one can set the level of the trigger voltage by adjusting the potentiometer 15.<\/span>\n<\/p>\n

\n\t\u5728\u67d0\u4e00\u65f6\u523b\uff0c 13 b \u7535\u538b\u8db3\u591f\u9ad8\u4f7f\u4e09\u6781\u7ba1 14 c \u7684\u5bfc\u901a\u3002\u89e6\u53d1\u7535\u538b\u7531\u7535\u963b15\u548c16\u51b3\u5b9a\uff0c15\u548c16\u7684\u7535\u963b\u8d8a\u9ad8\uff0c\u89e6\u53d1\u7535\u538b\u8d8a\u9ad8\u3002\u56e0\u6b64\uff0c\u89e6\u53d1\u7535\u538b\u80fd\u85c9\u7531\u8c03\u6574\u7535\u4f4d\u5668 15 \u8bbe\u5b9a\u3002<\/span>\n<\/p>\n

\n\tIn addition, depending on the level of voltage across the capacitor 24, the voltage across the winding 13c may be high enough to cause an energy recovery current to flow through the winding 13c, the rectifier 23, and the capacitor 24. Thus, when the recovery current flows, the winding 13c is converting magnetic energy from the rotating pole 19 into electrical energy, which is stored in the capacitor 24.<\/span>\n<\/p>\n

\n\t\u6b64\u5916\uff0c\u6839\u636e\u7535\u5bb9\u5668 24 \u7684\u4e24\u7aef\u7535\u538b,\u7ebf\u5708 13 c \u4e24\u7aef\u7684\u7535\u538b\u8981\u8db3\u591f\u9ad8\u624d\u80fd\u4ea7\u751f\u4e00\u4e2a\u6062\u590d\u7535\u6d41\u901a\u8fc7\u6574\u6d41\u5668 23\u5230\u7535\u5bb9\u566824.\u56e0\u6b64\uff0c\u5f53\u6062\u590d\u7535\u6d41\u53d1\u751f\uff0c\u7ebf\u5708 13 c \u6b63\u5728\u4f7f\u65cb\u8f6c\u6781 19\u7684\u78c1\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u50a8\u5b58\u5230\u7535\u5bb9\u566824.<\/span>\n<\/p>\n

\n\tOnce turned on, the transistor 14 generates an opposing magnetic flux in the windings 13a-13c. More specifically, the transistor 14 draws a current from the battery 11, through the switch 12 and the winding 13b. This current increases and generates an increasing magnetic flux that opposes the flux generated by the rotating pole 19.
\n\t\u4e00\u65e6\u4e09\u6781\u7ba1\u5bfc\u901a\uff0c\u5728\u7ebf\u570813a-13c\u4e2d\u4ea7\u751f\u53cd\u5411\u7684\u78c1\u6d41\u3002\u66f4\u5177\u4f53\u800c\u8a00\uff0c\u4e09\u6781\u7ba1\u4ece\u7535\u6c6011\u4e2d\u62bd\u53d6\u4e00\u4e2a\u7535\u6d41\uff0c\u901a\u8fc7\u5f00\u517312\u548c\u7ebf\u570813b\u3002\u8fd9\u4e2a\u7535\u6d41\u589e\u957f\u5e76\u4ea7\u751f\u4e00\u4e2a\u589e\u957f\u7684\u78c1\u6d41\u4e14\u4e0e\u8f6c\u5b50\u4ea7\u751f\u7684\u78c1\u6d41\u76f8\u53cd\u3002<\/span>\n<\/p>\n

\n\tWhen the opposing magnetic flux exceeds the flux generated by the rotating pole 19, the opposing flux reinforces the rotation of the rotor 20. Specifically, when the opposing flux (which is generated by the increasing current through winding 13a) exceeds the flux generated by the pole 19, the magnetisation of the pole piece 18 inverts to North pole. Therefore, the reverse-magnetic pole piece 18 repels the pole 19, and thus imparts a rotating force to the rotor 20. The pole piece 18 rotates the rotor 20 with maximum efficiency if the pole-piece magnetisation inverts to North when the centre of the pole 19 is aligned with the centre of the pole piece. Typically, the potentiometer 15 is adjusted to set the trigger voltage of the transistor 14 at a level which attains or approximates to this maximum efficiency.<\/span>\n<\/p>\n

\n\t\u5f53\u53cd\u5411\u78c1\u6d41\u8d85\u8fc7\u8f6c\u5b50\u4ea7\u751f\u7684\u78c1\u6d41\uff0c\u53cd\u5411\u78c1\u6d41\u589e\u5f3a\u8f6c\u5b50\u65cb\u8f6c\u3002\u5177\u4f53\u5730\uff0c\u5f5313a\u7684\u53cd\u5411\u78c1\u6d41\u8d85\u8fc7\u8f6c\u5b50\u4ea7\u751f\u7684\uff0c\u78c1\u82af18\u53d8\u6210N\u6781\uff0c\u6240\u4ee5\uff0c18\u6392\u65a519\uff0c\u8d4b\u4e88\u8f6c\u5b5020\u4e00\u4e2a\u65cb\u8f6c\u529b\u3002\u5f5319\u4e2d\u5fc3\u4e0e18\u4e2d\u5fc3\u5bf9\u9f50\u7684\u65f6\u501918\u9a71\u52a820\u6548\u7387\u6700\u9ad8\u3002\u901a\u5e38\uff0c\u8c03\u8282\u7535\u4f4d\u566815\u6765\u8bbe\u7f6e\u89e6\u53d1\u7535\u538b\u4ee5\u8fbe\u5230\u6548\u7387\u6700\u9ad8\u3002<\/span>\n<\/p>\n

\n\tThe transistor 14 then turns off before the opposing flux can work against the rotation of the rotor 20. Specifically, if the pole piece 18 remains magnetised to North pole, it will repel the next pole 19 in a direction (counterclockwise in this example) opposite to the rotational direction of the rotor 20. Therefore, the motor turns transistor 14 off, and thus demagnetises the pole piece 18, before this undesirable repulsion occurs. More specifically, when the opposing flux exceeds the flux generated by the pole 19, the voltage across the winding 13b reverses polarity such that the dotted end is less positive than the opposite end. The voltage across the winding 13b decreases as the opposing flux increases. At some point, the voltage at the base of the transistor decreases to a level that turns transistor 14 off. This turn-off point depends on the combined resistance of potentiometer 15 and resistor 16 and the capacitance (not shown) at the transistor base. Therefore, potentiometer 15 can be adjusted, or other conventional techniques can be used to adjust the timing of this turn-off point.<\/span>\n<\/p>\n

\n\t\u5728\u53cd\u5411\u78c1\u901a\u6291\u5236\u8f6c\u5b5020\u65cb\u8f6c\u4e4b\u524d\uff0c\u4e09\u6781\u7ba1 14 \u5173\u95ed\u3002\u660e\u786e\u5730\uff0c\u5982\u679c\u78c1\u82af18\u4fdd\u6301\u78c1\u5316\u4e3a\u5317\u6781\uff0c\u5b83\u5c06\u4f1a\u53cd\u5bf9\u4e0b\u4e00\u4e2a\u5355\u678119\u8f6c\u8fc7\u6765\u3002\u56e0\u6b64\uff0c\u7535\u52a8\u673a\u5173\u6389\u4e09\u6781\u7ba1 14\uff0c18\u4ece\u800c\u6d88\u78c1, \u5728\u8fd9\u4e2a\u4e0d\u53d7\u6b22\u8fce\u7684\u65a5\u529b\u53d1\u751f\u4e4b\u524d\u3002\u66f4\u660e\u786e\uff0c\u5f53\u53cd\u5411\u78c1\u901a\u8d85\u8fc7\u88ab\u6781 19 \u53d1\u751f\u7684\u78c1\u901a, \u7ebf\u570813 b\u4e24\u7aef\u7684\u7535\u538b\u98a0\u5012\u6781\u6027\uff0c\u4ee5\u81f4\u4e8e\u6709\u70b9\u7684\u7aef\u6bd4\u53cd\u5411\u7684\u7aef\u66f4\u5c11\u7684\u6b63\u6781\u6027\u3002\u5f53\u505a\u53cd\u5411\u78c1\u901a\u589e\u5927\u7ebf\u5708 13 b \u4e24\u7aef\u7535\u538b\u51cf\u5c11\u3002\u53e6\u4e00\u70b9\uff0c\u4e09\u6781\u7ba1\u57fa\u6781\u7684\u7535\u538b\u51cf\u5c11\u5230\u4e00\u5b9a\u6c34\u5e73\u540e\u4e09\u6781\u7ba1 14\u5173\u95ed\u3002\u8fd9\u5173\u95ed\u70b9\u53d6\u51b3\u4e8e\u7535\u4f4d\u566815 \u548c\u7535\u963b 16 \u7684\u7ec4\u5408\u7535\u963b\u548c\u5728\u4e09\u6781\u7ba1\u57fa\u6781\u7535\u5bb9\u5bb9\u91cf\uff08\u4e0d\u663e\u793a\uff09\u3002\u56e0\u6b64\uff0c\u7535\u4f4d\u566815 \u80fd\u88ab\u8c03\u6574\uff0c\u6216\u5176\u4ed6\u4f20\u7edf\u7684\u6280\u672f\u80fd\u88ab\u7528\u6765\u8c03\u6574\u8fd9\u5173\u95ed\u70b9\u7684\u6b63\u65f6\u3002<\/span>\n<\/p>\n

\n\tThe rectifier 23 and capacitor 24 recapture the energy that is released by the magnetic field (which energy would otherwise be lost) when the transistor 14 turns off. Specifically, turning transistor 14 off abruptly, cuts off the current flowing through winding 13a. This generates voltage spikes across the windings 13a-13c where the dotted ends are less positive than their respective opposite ends. These voltage spikes represent the energy released as the current-induced magnetisation of stator 18a and pole piece 18b collapses, and may have a magnitude of several hundred volts. But, as the voltage spike across the winding 13c increases above the sum of the two diode drops of the rectifier 23, it causes an energy-recovery current to flow through the rectifier 23 and the voltage across the capacitor 24 charge the capacitor 24. Thus, a significant portion of the energy released upon collapse of the current-induced magnetic field is recaptured and stored as a voltage in the capacitor 24. In addition, the diode 17 prevents damage to the transistor 14 by clamping the reverse base-emitter voltage caused by the voltage spike across the winding 13b.<\/span>\n<\/p>\n

\n\t\u5f53\u4e09\u6781\u7ba1 14 \u5173\u6389\u65f6\uff0c\u6574\u6d41\u5668 23 \u548c\u7535\u5bb924 \u4fd8\u83b7\u88ab\u78c1\u573a\u91ca\u653e\u7684\u80fd\u91cf\u3002\u660e\u786e\u5730\uff0c\u7a81\u7136\u5730\u5173\u6389\u4e09\u6781\u7ba1 14\uff0c\u5207\u65ad\u6d41\u8fc7\u7ebf\u5708 13a\u7684\u7535\u6d41\u3002\u5c06\u4ea7\u751f\u7535\u538b\u5c16\u5cf0\u5728\u7ebf\u5708 13 a-13c\u3002\u8fd9\u4e9b\u7535\u538b\u5c16\u5cf0\u8868\u660e\u5f53\u7531\u7535\u6d41\u5f15\u8d77\u7684 18 a\u548c18 b\u78c1\u573a\u7a81\u7136\u5d29\u6e83\uff0c\u800c\u4e14\u53ef\u80fd\u6709\u6570\u767e\u7535\u538b\u7684\u5927\u5c0f\u3002\u4f46\u662f\uff0c\u5f53\u572813 c\u7684\u7535\u538b\u5c16\u5cf0 \u589e\u5927\u5230\u9ad8\u4e8e\u6574\u6d41\u5668 23 \u7684\u4e8c\u6781\u7ba1\u7535\u538b, \u80fd\u91cf\u56de\u6536\u7535\u6d41\u901a\u8fc7\u6574\u6d41\u50a8\u5b58\u5230\u7535\u5bb924\u4e2d.\u56e0\u6b64\uff0c\u5728\u7535\u6d41\u5f15\u8d77\u7684\u78c1\u573a\u7684\u7a81\u7136\u5d29\u6e83\u4e4b\u540e\u88ab\u91ca\u653e\u7684\u80fd\u91cf\u7684\u91cd\u8981\u90e8\u5206\u50a8\u5b58\u5728\u7535\u5bb924\u3002\u6b64\u5916\uff0c\u4e8c\u6781\u7ba1 17\u4fdd\u62a4\u4e09\u6781\u7ba1 14 \u514d\u53d713b\u7684\u4f24\u5bb3\u3002<\/span>\n<\/p>\n

\n\tThe recaptured energy can be used in a number of ways. For example, the energy can be used to charge a battery 29. In one embodiment, the timing wheel 26 makes two revolutions for each revolution of the rotor 20. The contact rotor 27 closes a switch 28, and thus dumps the charge on the capacitor 24 into the battery 29, once each revolution of the wheel 26. Other energy-recapture devices and techniques may also be used. Rotor 20 may be stopped, either by applying a brake to it or by opening the switch 12.<\/span>\n<\/p>\n

\n\t\u6355\u83b7\u7684\u80fd\u91cf\u53ef\u4ee5\u6709\u591a\u79cd\u4f7f\u7528\u65b9\u5f0f\u3002\u4f8b\u5982\uff0c\u80fd\u7528\u6765\u7ed9\u7535\u6c6029\u5145\u7535\u3002\u5176\u4e2d\u4e00\u4e2a\u5b9e\u65bd\u65b9\u6cd5\u4e2d\uff0c\u8f6c\u5b5020\u65cb\u8f6c1\u6b21\u5b9a\u65f6\u8f6e26\u65cb\u8f6c2\u6b21\u3002\u8fde\u63a5\u566827\u5173\u95ed\u5f00\u517328\uff0c\u628a\u7535\u5bb924\u7684\u7535\u8377\u6cf5\u6d66\u5230\u7535\u6c6029\u4e2d\uff0c\u8f6e\u5b5026\u6bcf\u65cb\u8f6c\u4e00\u6b21\u53d1\u751f\u4e00\u6b21\u3002\u5176\u4ed6\u80fd\u91cf\u4fd8\u83b7\u8bbe\u5907\u548c\u6280\u672f\u4e5f\u53ef\u4ee5\u4f7f\u7528\u3002\u8f6c\u5b5020\u53ef\u4ee5\u88ab\u505c\u6b62\uff0c\u4e0d\u7ba1\u662f\u901a\u8fc7\u65bd\u52a0\u4e00\u4e2a\u5236\u52a8\u8fd8\u662f\u6253\u5f00\u5f00\u517312.<\/span>\n<\/p>\n

\n\t \n<\/p>\n

\n\tOther embodiments of the monopole motor are contemplated. For example, instead of remaining closed for the entire operation of the motor, the switch 12 may be a conventional optical switch or a Hall-effect switch that opens and closes automatically at the appropriate times. To increase the power of the motor, the number of stators 18a and pole pieces 18b, may be increased and\/or the number of poles 19. Furthermore, one can magnetise the stator 18a and pole piece 18b during the attraction of the pole 19 instead of or in addition to magnetising the stator and pole piece during the repulsion of the pole 19.<\/span>\n<\/p>\n

\n\t\u5355\u6781\u7535\u673a\u7684\u53e6\u5916\u5b9e\u65bd\uff0c\u4f8b\u5982\uff0c\u5f00\u517312\u53ef\u4ee5\u88ab\u5149\u63a7\u5f00\u5173\u6216\u8005\u970d\u5c14\u5f00\u5173\u6253\u5f00\u548c\u5173\u95ed\u3002\u4e3a\u4e86\u589e\u52a0\u7535\u673a\u7684\u80fd\u91cf\uff0c\u53ef\u4ee5\u589e\u52a018a\u7684\u6570\u91cf\u6216\u800519\u7684\u6570\u91cf\u3002\u8fdb\u4e00\u6b65\uff0c\u53ef\u4ee5\u572819\u5438\u5f1518b\u7684\u9636\u6bb5\u78c1\u5316\u5b9a\u5b5018a\u4ee3\u66ff19\u6392\u65a5\u5b9a\u5b50\u7684\u65f6\u5019\u78c1\u5316\u5b9a\u5b50\uff08\u4e5f\u5c31\u662f\u5438\u529b\u6a21\u5f0f\uff09\u3002<\/span>\n<\/p>\n

\n\tMoreover, the stator 18a may be omitted so that coil 13 becomes an air coil, or the stator 18a and the pole piece 18b may compose a permanent magnet. In addition<\/u>, although the transistor 14 is described as being a bipolar transistor, a MOSFET transistor may also be used. Furthermore, the recaptured energy may be used to recharge the battery 11. In addition, although described as rotating in a clockwise direction, the rotor 20 can rotate in a counterclockwise direction. Moreover, although described as attracting a rotor pole 19 when no current flows through winding 13a and repelling the pole 19 when a current flows through winding 13a, the pole piece 18b may be constructed so that it attracts the pole 19 when a current flows through winding 13a and repels the pole 19 when no current flows through winding 13a.<\/span>\n<\/p>\n

\n\t\u6b64\u5916\uff0c\u5b9a\u5b5018a\u53ef\u4ee5\u7701\u53bb\u4ee5\u81f3\u4e8e13\u53d8\u6210\u4e86\u4e00\u4e2a\u7a7a\u5fc3\u7ebf\u5708\uff0c\u6216\u8005\u53ef\u4ee5\u7528\u6c38\u78c1\u7ec4\u6210\u3002\u53e6\u5916\uff0c\u5c3d\u7ba1\u4e09\u6781\u7ba114\u88ab\u63cf\u8ff0\u6210\u4e00\u4e2a\u53cc\u6781\u6676\u4f53\u7ba1\uff0c\u4e00\u4e2aMOSFET\u6676\u4f53\u7ba1\u4e5f\u53ef\u4ee5\u4f7f\u7528\u3002\u800c\u4e14\uff0c\u56de\u6536\u80fd\u91cf\u53ef\u4ee5\u88ab\u7528\u4e8e\u7ed9\u7535\u6c6011\u5145\u7535\u3002\u5c3d\u7ba1\u8f6c\u5b50\u63cf\u8ff0\u4e3a\u987a\u65f6\u9488\u65cb\u8f6c\uff0c\u4e5f\u53ef\u4ee5\u662f\u9006\u65f6\u9488\u65cb\u8f6c\u3002\u5c3d\u7ba1\u5f53\u6ca1\u6709\u7535\u6d41\u6d41\u7ecf\u7ebf\u570813a\u65f6\u5438\u5f15\u8f6c\u5b5019\uff0c\u5f53\u6709\u7535\u6d41\u6d41\u7ecf13a\u65f6\u6392\u65a519\uff0c\u5b9e\u9645\u4e5f\u53ef\u4ee5\u5b89\u6392\u4e3a\u6709\u7535\u6d41\u65f6\u5438\u5f15\uff0c\u65e0\u7535\u6d41\u65f6\u6392\u65a5\u3002<\/span>\n<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

  \u88c5\u7f6e\u8fd0\u884c\u539f\u7406\u8be6\u89e3\u3002 First, the switch 12 is closed. Because the transistor 14 is off, no current flows through the winding 13a. \u9996\u5148\uff0c\u5f00\u5173 12 \u88ab\u5173\u95ed\uff0c\u56e0\u4e3a\u4e09\u6781\u7ba1 14 \u662f\u6ca1\u6709\u5bfc\u901a\u7684\uff0c\u6ca1\u6709\u7535\u6d41\u6d41\u8fc7\u7ebf\u570813a\u3002 Next, the motor is started by rotating the rotor 20, say, in a clockwise direction. The rotor may be rotated by hand, or by a conventional motor-starting device or …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":{"0":"post-361","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-bedini","7":"anons"},"_links":{"self":[{"href":"https:\/\/www.zyneng.com\/index.php?rest_route=\/wp\/v2\/posts\/361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zyneng.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zyneng.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zyneng.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zyneng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=361"}],"version-history":[{"count":4,"href":"https:\/\/www.zyneng.com\/index.php?rest_route=\/wp\/v2\/posts\/361\/revisions"}],"predecessor-version":[{"id":370,"href":"https:\/\/www.zyneng.com\/index.php?rest_route=\/wp\/v2\/posts\/361\/revisions\/370"}],"wp:attachment":[{"href":"https:\/\/www.zyneng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zyneng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zyneng.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}