Function generator has voltage follower and negator - between first operational amplifier output and resistors which are coupled to additional amplifier input

摘要

The function generator has the output of the additional operational amplifier (Vb) described in the main patent connected to the first ends of the resistors (R1-R7) whose second ends are connected to the inverting input of the first operational amplifier (Va). There is a voltage follower (Vc) which is coupled in series with a negator (N) between the first ends of the resistors and the output of the additional operational amplifier. The advantage of this circuit arrangement lies in its making the capacitor actual charged voltage and its maximum charge voltage variable independent of one another in the simplest manner.