单相桥式整流电路如图a)所示,变压器副边电压U
2
的波形如图b)所示,设4个二极管均为理想元件,则二极管D两端的电压u的波形是图c)中哪个图所示()?
https://assets.asklib.com/psource/2015102716073034243.jpg
https://assets.asklib.com/psource/2015102716074771719.jpg
https://assets.asklib.com/psource/2015102716081325325.jpg