i applied ckt on bread board and calculated on dso …the output had only 800mv ac component of 40mhz though other portion was dc component of all-around 4v . i utilized Vcc of 5v . what i want is atleast 4v peak to peak in addition to 9v peak to peak if Vcc is 9V …looking forward to fast replyCrystals vibrate at a selected frequency when stimula