Heey. Can someone help me get the idea how this circuit gives the below wave? As far as I can understand, Voltage Vss goes down to -Vss because it charges up through negative op amp feedback capacitor. Im not quite sure how does it discharge when it fully charges to Vss-

 

Vss is not labeled on the diagram. It is normally understood to be GND. Saying that Vss goes down to -Vss is confusing to say the least.

 

Yeah I am kinda more confused now.. I am not sure if the the op amp reaches the Vin voltage or does it have to reach certain threshold at which will be considered as HIGH or LOW ?