Voltage modulation circuit, Variable voltage supply, Variable voltage circuit using 555 timer in proteus isis, how to design variable voltage supply in proteus isis Hello friends, hope you all are fine and having fun. In today's post we are gonna have a look at LM317 Voltage Regulator in Proteus. In the previous post, we have seen how to design a 5V Power Supply in Proteus ISIS, which I have designed using IC regulator 7805. Today I am going to share How to de ...