[多选题]变频器按变换环节可分为( )。
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2023-10-01 19:22:29|
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[多选题]变频器按变换环节可分为( )。
A.脉冲宽度调制（PWM）
B.交—交
C.脉冲幅度调制（PAM）型
D.交—直—交
A.脉冲宽度调制（PWM）
B.交—交
C.脉冲幅度调制（PAM）型
D.交—直—交
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