普通晶闸管最基本的用途就是可控整流。大家熟悉的二极管整流电路属于不可控整流电路。
如果把二极管换成晶闸管，就可以构成可控整流电路、逆变、电机调速、电机励磁、无触点开关及自动控制等方面。
在电工技术中，常把交流电的半个周期定为180°，称为电角度。这样，在U2的每个正半周，
从零值开始到触发脉冲到来瞬间所经历的电角度称为控制角α；在每个正半周内晶闸管导通的电角度叫导通角θ。
很明显，α和θ都是用来表示晶闸管在承受正向电压的半个周期的导通或阻断范围的。通过改变控制角α或导通角θ，
改变负载上脉冲直流电压的平均值UL，实现了可控整流。
无触点开关
可控硅的功用不仅是整流，它还可以用作无触点开关以快速接通或切断电路，实现将直流电变成交流电的逆变，
将一种频率的交流电变成另一种频率的交流电，等等。
编辑本段晶闸管触发电路的形式
常用的有阻容移相桥触发电路、单结晶体管触发电路、晶体三极管触发电路、利用小晶闸管触发大晶闸管的触发电路，
等等。可控硅的主要参数 可控硅的主要参数有： 电压
平均值 1、 额定通态平均电流IT在一定条件下，阳极---阴极间可以连续通过的50赫兹正弦半波电流的平均值。
峰值电压 2、 正向阻断峰值电压VPF 在控制极开路未加触发信号，阳极正向电压还未超过导能电压时，
可以重复加在可控硅两端的正向峰值电压。可控硅承受的正向电压峰值，不能超过手册给出的这个参数值。
3、 反向阻断峰值电压VPR当可控硅加反向电压，处于反向关断状态时，可以重复加在可控硅两端的反向峰值电压。
使用时，不能超过手册给出的这个参数值。 4、 控制极触发电流Ig1 、触发电压VGT在规定的环境温度下，
阳极---阴极间加有一定电压时，可控硅从关断状态转为导通状态所需要的最小控制极电流和电压。
5、 维持电流IH在规定温度下，控制极断路，维持可控硅导通所必需的最小阳极正向电流。 ■
近年来，许多新型可控硅元件相继问世，如适于高频应用的快速可控硅，
可以用正或负的触发信号控制两个方向导通的双向可控硅，
可以用正触发信号使其导通，用负触发信号使其关断的可控硅等等。
编辑本段可控硅的分类热卖WESTCODE公司晶闸管N450SH14、N450SH18、N540SH18
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N370SH18
N520SH02
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N520SH10
N520SH12
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N520SH15
N320SH36
N320SH38
N320SH40
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N320SH44
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N490SH02
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N600SH08
N600SH10
N600SH12
N600SH14
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N560SH40
N560SH42
N560SH44
N560SH45
N630SH26
N630SH28
N630SH30
N630SH32
N630SH34
N630SH36
N640SH20
N640SH22
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N640SH26
N640SH28
N640SH30
N760SH02
N760SH04
N760SH06
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N760SH14
热卖WESTCODE公司晶闸管N450SH14、N450SH18、N540SH18
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ABB普通二极管
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5SDD40B0200 5SDD71B0200 5SDD71X0200 5SDD71X0400 5SDD0135Z0400
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(STARPOWER)斯达半导体IGBT模块
GD75HFK60C1ST
GD100HFK60C1ST
GD150HFK60C1ST
GD150HFK60C8S
GD200HFK60C8S
GD300HFK60C8S
GD50HFL120C1S
GD75HFL120C1S
GD100HFL120C1S
GD100HFL120C2S
GD150HFL120C2S
GD200HFL120C2S
GD300HFL120C2S
GD400HFT120C2SN
GD225HFL120C6S
GD300HFL120C6S
GD450HFL120C6S
GD75FFL120C6S
GD100FFL120C6S
GD150FFL120C6S
GD15PIK120C5S
GD25PIT120C5S
GD40PIT120C5S
GD50PIT120C6S
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GD75PIT120C6S
GD50CUL120C1S
GD75CUL120C1S
GD100CUL120C1S
GD150CUL120C2S
GD200CUL120C2S
GD300CUL120C2S
GD400CUL120C2S
GD100SGL120C1S
GD200SGL120C2S
GD300SGL120C2S
GD400SGL120C2S
GD600SGL120C2S
【沟槽型低损系列】
GD50HFT120C1S
GD75HFT120C1S
GD100HFT120C1S
GD100HFT120C2S
GD150HFT120C2S
GD200HFT120C2S
GD300HFT120C2S
GD400HFT120C2S
GD100HFT120C8S
GD150HFT120C8S
GD200HFT120C8S
GD150HFT120C6S
GD225HFT120C6S
GD300HFT120C6S
GD450HFT120C6S
GD450HFT120P1S
GD600HFT120P1S
GD900HFT120P1S
GD1400HFT120P2S
GD600HFT120C3S
GD800HFT120C3S
GD1200HFT120C3S
GD600HFT120A3S
GD800HFT120A3S
GD1200HFT120A3S
GD75HFT120L1S
GD100HFT120L1S
GD150HFT120L1S
GD400HFT120C2SN
GD150HFT120C8SN
GD200HFT120C8SN
GD100HFT120C5S
GD150HFT120C5S
GD200HFT120C5S
【标准系列】
GD150HFK120C8SN
GD50HFK120C1S
GD75HFK120C1S
GD100HFK120C1S
GD100HFK120C2S
GD150HFK120C2S
GD200HFK120C2S
GD300HFK120C2S
GD400HFK120C2S
GD100HFK120C8S
GD150HFK120C8S
GD200HFK120C8S
GD75HFK120L1S
GD100HFK120L1S
GD150HFK120L1S
GD200HFK120C8SN
【超快速系列】
GD150HFU120C8SN
GD50HFU120C1S
GD75HFU120C1S
GD100HFU120C1S
GD100HFU120C2S
GD150HFU120C2S
GD200HFU120C2S
GD300HFU120C2S
GD400HFU120C2S
GD100HFU120C8S
GD150HFU120C8S
GD200HFU120C8S
GD75HFU120L1S
GD100HFU120L1S
GD150HFU120L1S
GD200HFU120C8SN
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