A Novel Low DC Voltages Generator Without Switching Devices
Keiju Matsui, Guan Erdong, Isamu Yamamoto, Masaru Hasegawa, Kenji Ando · 2007
It is a little difficult to obtain the lower dc voltage below the one obtained from input ac supply voltage without transformer or switching operations. Those operations can be implemented by passive devices due to fabrication of electrolytic capacitors. The results are confirmed by the theoretical and experimental implementations.