Isolation methods and devices for isolating pixels of an image sensor pixel. The first contactor is configured to sever electrical communication between the PMG and the active rectifier and the second contactor is configured to establish electrical communication between the PMG and the motor drive. The fluid is urged towards the dispensing orifice by thrust mechanism so that fluid is always present at the dispensing orifice. To remove the parasitic effects, both circuit sections include bipolar transistor circuits with multiple bipolar transistors, so that both the temperature-proportional voltage and the inversely temperature-proportional voltage are generated in the form of a sum and difference formation of multiple base-emitter voltages of the appropriate bipolar transistors. The liquid held in the tank is maintained at a substantially constant height above the flow restrictor to ensure a constant flow of liquid. To use the invention, the invention is place over the intraosseous infusion device placed in the patient’s leg and the strap is tightened around the patient’s leg.