how to convert frm 2.5V to exact 5V? | Electronics › Electronics › how to convert frm 2.5V to exact 5V? This topic has 2 replies, 3 voices, and was last updated 11 years, 11 months ago by sourabh. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts June 12, 2011 at 8:45 am #997 thanikaiParticipant hi guyz, any idea to vonvert 2.5V to exact 5V… the voltage frm output port is 2.5V someting which connected to RELAY.. but 5V is needed to activate that relay… June 30, 2011 at 2:47 pm #6397 Hafiz saleemParticipant Try using an OP-AMP. July 2, 2011 at 3:37 pm #6414 sourabhParticipant Op amp LM324 must work. If use set the V+ voltage to a max of 5V you will get a voltage of 5V on amplification. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In