Controlled rectifiers
(A) 1-phase full converter
(B) 1-phase semiconverter
(C) 3-phase half-wave converter
(D) 3-phase semiconverter
Output voltage expressions

1.	3Vm	(1 + cos α)
	2 π

2.	2Vm	cos α
	π

3.	Vm	(1 + cos α)
	π

4.	3 √3	(Vm cos α )
	2 π