Hi everyone, I'm trying to implement the attached circuit. (the .txt is for http://www.falstad.com/circuit/) Since I only have a single power supply and I ultimately want to drive this with a battery I am powering the opamp with a virtual ground. Using a voltage divider to achieve this. Opamp VCC+ connected to + of power supply Opamp VCC- connected to - of power supply Ground in circuit connected to middle of voltage divider. The problem I am having is when I turn the circuit on, the output correctly outputs for about 1/4 of a second and then gets stuck high. As far as I can tell the circuit is wired correctly, and I am at loss what could be causing this behaviour. Hoping someone might be able to point out the errors of my way. Is what I'm trying to do even possible?? Thanks :) *edit* the output of the left and middle op-amps are supposed to be sin waves, according to Falstad they are about 1.4mV p-p The right most op-amp just amplifies the signal to a level that I can use.