众所周知，使用双向可控硅的通与断可以实现交流电输出电压的调节。输出电压的控制采用控制可控管的导通角来实现。
控制角是指可控硅断开的正弦波角度。
输出电压与输入电压、及控制角的关系表：
正弦波半周（90度角)面积 2 交流电输入电压(V) 230
1角度对应的弧度 0.0174 弧度与角度对应关系： 2π = 360度
控制角角度 控制角弧度 Sin(x)积分 积分百分率 输出电压
0 0.0000 0.0000 0.00% 230.00
1 0.0174 0.0002 0.01% 229.98
2 0.0349 0.0006 0.03% 229.93
3 0.0523 0.0014 0.07% 229.84
4 0.0698 0.0024 0.12% 229.72
5 0.0872 0.0038 0.19% 229.56
6 0.1047 0.0055 0.27% 229.37
7 0.1221 0.0074 0.37% 229.14
8 0.1396 0.0097 0.49% 228.88
9 0.1570 0.0123 0.61% 228.59
10 0.1744 0.0152 0.76% 228.25
11 0.1919 0.0184 0.92% 227.89
12 0.2093 0.0218 1.09% 227.49
13 0.2268 0.0256 1.28% 227.06
14 0.2442 0.0297 1.48% 226.59
15 0.2617 0.0340 1.70% 226.09
16 0.2791 0.0387 1.93% 225.55
17 0.2966 0.0437 2.18% 224.98
18 0.3140 0.0489 2.44% 224.38
19 0.3314 0.0544 2.72% 223.74
20 0.3489 0.0602 3.01% 223.07
21 0.3663 0.0664 3.32% 222.37
22 0.3838 0.0727 3.64% 221.63
23 0.4012 0.0794 3.97% 220.87
24 0.4187 0.0864 4.32% 220.07
25 0.4361 0.0936 4.68% 219.24
26 0.4536 0.1011 5.06% 218.37
27 0.4710 0.1089 5.44% 217.48
28 0.4884 0.1169 5.85% 216.55
29 0.5059 0.1253 6.26% 215.60
30 0.5233 0.1338 6.69% 214.61
31 0.5408 0.1427 7.13% 213.59
32 0.5582 0.1518 7.59% 212.54
33 0.5757 0.1612 8.06% 211.47
34 0.5931 0.1708 8.54% 210.36
35 0.6106 0.1807 9.03% 209.22
36 0.6280 0.1908 9.54% 208.06
37 0.6454 0.2012 10.06% 206.87
38 0.6629 0.2118 10.59% 205.65
39 0.6803 0.2226 11.13% 204.40
40 0.6978 0.2337 11.69% 203.12
41 0.7152 0.2451 12.25% 201.82
42 0.7327 0.2566 12.83% 200.49
43 0.7501 0.2684 13.42% 199.14
44 0.7676 0.2804 14.02% 197.76
45 0.7850 0.2926 14.63% 196.35
46 0.8024 0.3050 15.25% 194.92
47 0.8199 0.3177 15.88% 193.46
48 0.8373 0.3306 16.53% 191.99
49 0.8548 0.3436 17.18% 190.48
50 0.8722 0.3569 17.84% 188.96
51 0.8897 0.3703 18.52% 187.41
52 0.9071 0.3840 19.20% 185.84
53 0.9246 0.3978 19.89% 184.25
54 0.9420 0.4118 20.59% 182.64
55 0.9594 0.4260 21.30% 181.01
56 0.9769 0.4404 22.02% 179.35
57 0.9943 0.4549 22.75% 177.68
58 1.0118 0.4696 23.48% 175.99
59 1.0292 0.4845 24.23% 174.28
60 1.0467 0.4995 24.98% 172.55
61 1.0641 0.5147 25.74% 170.81
62 1.0816 0.5300 26.50% 169.04
63 1.0990 0.5455 27.28% 167.27
64 1.1164 0.5611 28.06% 165.47
65 1.1339 0.5769 28.84% 163.66
66 1.1513 0.5927 29.64% 161.84
67 1.1688 0.6087 30.44% 160.00
68 1.1862 0.6248 31.24% 158.14
69 1.2037 0.6411 32.05% 156.28
70 1.2211 0.6574 32.87% 154.40
71 1.2386 0.6738 33.69% 152.51
72 1.2560 0.6904 34.52% 150.61
73 1.2734 0.7070 35.35% 148.69
74 1.2909 0.7237 36.19% 146.77
75 1.3083 0.7405 37.03% 144.84
76 1.3258 0.7574 37.87% 142.90
77 1.3432 0.7744 38.72% 140.95
78 1.3607 0.7914 39.57% 138.99
79 1.3781 0.8085 40.43% 137.02
80 1.3956 0.8257 41.28% 135.05
81 1.4130 0.8429 42.14% 133.07
82 1.4304 0.8601 43.01% 131.09
83 1.4479 0.8774 43.87% 129.10
84 1.4653 0.8947 44.74% 127.11
85 1.4828 0.9121 45.60% 125.11
86 1.5002 0.9295 46.47% 123.11
87 1.5177 0.9469 47.34% 121.11
88 1.5351 0.9643 48.22% 119.10
89 1.5526 0.9818 49.09% 117.10
90 1.5700 0.9992 49.96% 115.09
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