• 可控硅调压器外接控制端口
• 使用光耦控制双向可控硅

01 稳压二极管

一、前言

  这是一个双向可控硅调压模块。  大部分器件已经被拆卸下来，  上面的这颗双向击穿二极管， 是用于触发双向可控硅的器件。  它上面的文字不太清楚， 也不知道具体的型号。  下面准备对于它的双向击穿特性进行初步测试。 了解一下它的端口电压特性。

二、特性测量

  首先， 将这个双向击穿二极管拆卸下来。  将其放置在面包板上进行测量。  通过一个 2k欧姆的电阻连接到稳压电源。  使用稳压电源提供 32V的直流电压。  测量稳压二极管两端的电压， 大约为 21V。  调换双向二极管的方向， 重新进行测量。 此时， 稳压电压为 20V。

  这里观察到的正反两个方面的稳压数值，  是二极管在击穿之后的稳态下对应的电压。  下面测量一下， 随着施加的电压增加， 击穿二极管的稳压特性。  对比一下与普通的稳压管是否有区别。  这是测量的结果。 可以看到它具有一个明显的击穿特征。   二极管被击穿之后， 它的两端电压迅速降低到20V左右。 这一点与普通的稳压二极管是不一样的。

#!/usr/local/bin/python # -*- coding: gbk -*- #============================================================ # TEST1.PY -- by Dr. ZhuoQing 2024-05-29 # # Note: #============================================================ from headm import * from tsmodule.tsvisa import * from tsmodule.tsstm32 import * vdim = linspace(0, 64, 100) vvv = [] for v in vdim: dh1766volt1(v) time.sleep(2) meter = meterval() vvv.append(meter[0]) tspsave("measure", vdim=vdim,vvv=vvv) printff(v, meter) plt.plot(vdim, vvv, lw=3) plt.xlabel("Input(V)") plt.ylabel("Output(V)") plt.grid(True) plt.tight_layout() plt.show() #------------------------------------------------------------ # END OF FILE : TEST1.PY #============================================================ 

vdim=[0.0000,0.6465,1.2929,1.9394,2.5859,3.2323,3.8788,4.5253,5.1717,5.8182,6.4646,7.1111,7.7576,8.4040,9.0505,9.6970,10.3434,10.9899,11.6364,12.2828,12.9293,13.5758,14.2222,14.8687,15.5152,16.1616,16.8081,17.4545,18.1010,18.7475,19.3939,20.0404,20.6869,21.3333,21.9798,22.6263,23.2727,23.9192,24.5657,25.2121,25.8586,26.5051,27.1515,27.7980,28.4444,29.0909,29.7374,30.3838,31.0303,31.6768,32.3232,32.9697,33.6162,34.2626,34.9091,35.5556,36.2020,36.8485,37.4949,38.1414,38.7879,39.4343,40.0808,40.7273,41.3737,42.0202,42.6667,43.3131,43.9596,44.6061,45.2525,45.8990,46.5455,47.1919,47.8384,48.4848,49.1313,49.7778,50.4242,51.0707,51.7172,52.3636,53.0101,53.6566,54.3030,54.9495,55.5960,56.2424,56.8889,57.5354,58.1818,58.8283,59.4747,60.1212,60.7677,61.4141,62.0606,62.7071,63.3535,64.0000] vvv=[0.0018,0.6449,1.2922,1.9383,2.5846,3.2308,3.8778,4.5232,5.1694,5.8166,6.4629,7.1092,7.7552,8.4014,9.0478,9.6938,10.3430,10.9880,11.6330,12.2810,12.9270,13.5730,14.2190,14.8660,15.5110,16.1580,16.8050,17.4510,18.0970,18.7440,19.3900,20.0360,20.6820,21.3300,21.9760,22.6220,23.2670,23.9140,24.5610,25.2070,25.8540,26.5000,27.1460,27.7930,28.4390,29.0850,29.7320,30.3780,31.0240,31.6710,21.0740,20.9110,20.7750,20.6570,20.5470,20.4490,20.3570,20.2710,20.1920,20.1160,20.0450,19.9780,19.9140,19.8530,19.7950,19.7400,19.6860,19.6370,19.5890,19.5430,19.5000,19.4560,19.4160,19.3770,19.3400,19.3060,19.2700,19.2360,19.2040,19.1730,19.1440,19.1160,19.0880,19.0630,19.0370,19.0120,18.9880,18.9640,18.9400,18.9210,18.9010,18.8810,18.8630,18.8480,18.8310,18.8150,18.7990,18.7830,18.7650,18.7490] 

  将稳压二极管反过来， 重新测量。  可以看到正反两个方向， 二极管被击穿的电压是相同的。  击穿后， 一个方向对应的电压比起另外一个稍微高一些。  在之后，随着电流的增加， 电压缓慢下降。  至于为何另外一个电压出现了波动， 原因不明。  不知道谁能够对此进行解释。

vdim=[0.0000,0.6465,1.2929,1.9394,2.5859,3.2323,3.8788,4.5253,5.1717,5.8182,6.4646,7.1111,7.7576,8.4040,9.0505,9.6970,10.3434,10.9899,11.6364,12.2828,12.9293,13.5758,14.2222,14.8687,15.5152,16.1616,16.8081,17.4545,18.1010,18.7475,19.3939,20.0404,20.6869,21.3333,21.9798,22.6263,23.2727,23.9192,24.5657,25.2121,25.8586,26.5051,27.1515,27.7980,28.4444,29.0909,29.7374,30.3838,31.0303,31.6768,32.3232,32.9697,33.6162,34.2626,34.9091,35.5556,36.2020,36.8485,37.4949,38.1414,38.7879,39.4343,40.0808,40.7273,41.3737,42.0202,42.6667,43.3131,43.9596,44.6061,45.2525,45.8990,46.5455,47.1919,47.8384,48.4848,49.1313,49.7778,50.4242,51.0707,51.7172,52.3636,53.0101,53.6566,54.3030,54.9495,55.5960,56.2424,56.8889,57.5354,58.1818,58.8283,59.4747,60.1212,60.7677,61.4141,62.0606,62.7071,63.3535,64.0000] vvv=[0.0041,0.6450,1.2922,1.9383,2.5845,3.2309,3.8779,4.5232,5.1694,5.8166,6.4629,7.1092,7.7553,8.4014,9.0478,9.6938,10.3430,10.9880,11.6330,12.2800,12.9270,13.5730,14.2190,14.8650,15.5110,16.1570,16.8050,17.4510,18.0970,18.7440,19.3900,20.0360,20.6820,21.3290,21.9760,22.6210,23.2680,23.9140,24.5610,25.2070,25.8540,26.5000,27.1460,27.7930,28.4390,29.0850,29.7320,30.3770,31.0240,31.6700,20.0480,19.9260,19.8330,19.7600,19.7780,19.6780,19.6020,19.5550,19.6430,19.4560,19.3840,19.4140,19.4380,19.6720,19.2280,19.2940,19.2940,19.3550,19.2230,19.0800,18.9410,18.9170,19.0520,18.8810,19.0300,19.0600,18.8210,18.8460,18.6680,18.6950,19.0810,18.9440,18.8570,18.7970,18.7690,18.7950,18.6210,18.6950,18.8770,18.7350,18.6720,18.6630,18.6110,18.5180,18.5260,18.3590,18.3430,18.3400,18.3460,18.3730] 

三、振荡器

  由于双向击穿二极管具有明显的击穿特性。   在二极管两端并联一个电容， 由此可以形成张弛振荡器。  当电容两端的电压被电阻充电，  超过击穿电压之后， 变回迅速通过击穿二极管进行放电。  放电电压小于一定值之后， 二极管变恢复截止。  这样便形成了简写震荡。  这一点是它能够适合用于可控硅触发的特点。

※ 总  结 ※

  本文测试了用于双向可控硅电路中的触发击穿二极管的特性。  它可以在 31V左右被击穿， 击穿后两端电压迅速降低。  利用这种特性， 可以形成间歇振荡电路。  也正是这个特性， 使得它适合于双向可控硅的触发。

■ 相关文献链接:

• 可控硅调压器外接控制端口-CSDN博客
• 使用光耦控制双向可控硅-CSDN博客

● 相关图表链接:

• 图1.2.1 稳压二极管两端电压
• 图1.2.2 输入电压与稳压二极管两端电压
• 图1.2.3 反向击穿过程