Patent ID: 8229554

Claim:
An apparatus, comprising: an implantable device housing; a circuit board disposed in the implantable device housing; a capacitor fixed to the circuit board and disposed in the implantable device housing, the capacitor including a dielectric comprising CaCu 3 Ti 4 O 12 , the dielectric insulating an anode from a cathode; electronics adapted to charge the capacitor with a substantially linear increase in voltage over time with a constant applied charging current until a maximum voltage is reached; pulse control electronics disposed in the implantable device housing and connected to the capacitor, wherein the capacitor comprises: a first layer comprising CaCu 3 Ti 4 O 12 ; a first electrode layer on the first layer; a second layer comprising CaCu 3 Ti 4 O 12 on the first electrode layer; and a second conductive electrode on the second layer comprising CaCu 3 Ti 4 O 12 .