Patent ID: 9641072
Date: 2017-05-02
CPC Classifications: E21B,G01V,H02M,H04B

Claim:
1. An apparatus to drive a reactive acoustic source, comprising: a reactive component in circuit with the reactive acoustic source; a first switching element in circuit with the acoustic source to selectively hold the reactive acoustic source in a first energy state and to selectively allow the reactive acoustic source to change from the first energy state to a second energy state; a second switching element in circuit with the reactive acoustic source to selectively hold the reactive acoustic source in the second energy state and to selectively allow the reactive acoustic source to change from the second energy state to the first energy state; and a controller to detect a current in the reactive acoustic source, wherein the driver circuit is configured to: wherein the first energy state comprises a first DC voltage having a first polarity and the second energy state comprises a second DC voltage having a second polarity opposite to the first polarity, and wherein the reactive acoustic source generates an acoustic wave during transitions between the first and second energy states.