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