the block diagram is AC signal -> Rectifier -> Crude DC supply -> DC-DC-Converter -> Stable DC supplythe block diagram is AC signal -> Rectifier -> Crude DC supply -> DC-DC-Converter -> Stable DC supplythe block diagram is AC signal -> Rectifier -> Crude DC supply -> DC-DC-Converter -> Stable DC supplythe block diagram is AC signal -> Rectifier -> Crude DC supply -> DC-DC-Converter -> Stable DC supplythe block diagram is AC signal -> Rectifier -> Crude DC supply -> DC-DC-Converter -> Stable DC supply