点击图片查看原图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。
编辑本段结构与鉴别
VHF15-16iO5
VHF28-08iO5
VHF28-12iO5
VHF28-14iO5
VHF28-16iO5
VHF36-12iO5
VHF36-14iO5
VHF36-16iO5
MCO450-20
MCO500-12
MCO500-16
MCO600-12
MCO600-16
半控可控硅：
MCD44-08IO1B
MCD44-12IO1B
MCD44-14IO1B
MCD44-16IO1B
MCD18-18IO1B
MCD56-08IO1B
MCD56-12IO1B
MCD56-14IO1B
MCD56-16IO1B
MCD56-18IO1B
MTX500A1800V
MTX500A2000V
MTX500A2200V
MTX600A
MTX600A600V
MTX600A800V
MTX600A1200V
MTX600A1400V
MTX600A1600V
MTX600A1800V
MTX600A2000V
MTX800A
MTX800A600V
MTX800A800V
MTX800A1200V
MTX800A1400V
MTX800A1600V
MTX800A1800V
MTX800A2000V
MTX1000A600V
MTX1000A800V
MTX1000A1200V
MTX1000A1400V
MTX1000A1600V
MTX1000A1800V
MTX1000A2000V
MTX1000A2200V
MTX1200A
MTX1200A600V
MTX1200A800V
MTX1200A1200V
MCD56-16IO1B进口可控硅