Hi
This is probably retarded question, so excuse my ignorance in advace.
How do I remove DC bias from a square wave. It is a perfectly square ttl wave so there is no negative crossing. The problem is that the wave occurs between 2v and 5v, NOT 0v and 5v which casues an issue with my pic detecting the frequency. Basically the pic sees the wave as one long "1"
How do I remove that 2v bias so the wave then will swing from 0v to 3v? I am guessing that OpAmp can do it with a single IC but that is where my expertise ends...
Thanks
B
This is probably retarded question, so excuse my ignorance in advace.
How do I remove DC bias from a square wave. It is a perfectly square ttl wave so there is no negative crossing. The problem is that the wave occurs between 2v and 5v, NOT 0v and 5v which casues an issue with my pic detecting the frequency. Basically the pic sees the wave as one long "1"
How do I remove that 2v bias so the wave then will swing from 0v to 3v? I am guessing that OpAmp can do it with a single IC but that is where my expertise ends...
Thanks
B