Abstract: A micro-energy harvester that receives an input direct current (DC) voltage from a micro-energy source. The micro-energy harvester includes an oscillator and builds up the input DC voltage into an output DC voltage, where the oscillator includes a transistor that is configured to be normally off and the transistor is configured to be switched on by the micro-energy source. The micro-energy harvester outputs the output DC voltage to a micro-energy application. The micro-energy application and the micro-energy harvester are both configured to operate without a battery. The micro-energy harvester also includes an integrated power manager that provides a complete solution for transforming and storing electrical energy from micro-energy power sources to efficiently power applications that do not require continuous power.

Abstract: The present invention provides, in at least one embodiment, a micro-energy harvester with an integrated power manager that provides a complete solution for transforming and storing electrical energy from micro-energy power sources to efficiently power applications that do not require continuous power.

Abstract: An improved corrosion measurement system for determining the rate of corrosion of a fluid medium. The system is comprised of a highly sensitive excitation and amplification electronic circuitry for registering and displaying the stable and accurate measurement results. A novel current feedback amplifier maintains a constant alternating current voltage across the reference element, by simultaneously controlling the current through the serially connected reference and corroding elements, thereby keeping the corrosivity measurement independent of the probe's ambient temperature. The unique unitized electrical resistance measurement probe is also temperature stabilized using thermally bridged and balanced metallic elements; the first reference element being coated with an impermeable insulating coating, the second, the sacrificial corroding element, being fully exposed to the corrosive fluid medium.

Abstract: An improved corrosion measurement system for determining the rate of corrosion of a fluid medium. The system is comprised of a highly sensitive excitation and amplification electronic circuitry for registering and displaying the stable and accurate measurement results. A novel current feedback amplifier maintains a constant alternating current voltage across the reference element, by simultaneously controlling the current through the serially connected reference and corroding elements, thereby keeping the corrosivity measurement independent of the probe's ambient temperature. The unique unitized electrical resistance measurement probe is also temperature stabilized using thermally bridged and balanced metallic elements; the first reference element being coated with an impermeable insulating coating, the second, the sacrificial corroding element, being fully exposed to the corrosive fluid medium.

Abstract: An improved corrosion measurement system for determining the rate of corrosion of a fluid medium. The system is comprised of a highly sensitive excitation and amplification electronic circuitry for registering and displaying the stable and accurate measurement results. A unique unitized measurement probe is temperature stabilized using thermally inertially balanced metallic probes; the first reference element being coated with an impermeable insulating coating, the second, the corroding element, being fully exposed to the corrosive fluid medium.

Abstract: A method and apparatus for determining the corrosivity of fluids on a metallic material by means of a coil with AC current with predetermined frequency, amplitude, wave form and range, and a metallic specimen with composition identical to the metallic material exposed to the fluid. The specimen, held within the magnetic field of the coil, sustains loss of mass by exposure to the fluid media with concomitant change in the magnetic quantities of inductivity and inductive resistance. Such changes are then converted from analog to digital, measured, collected and processed by a microprocessor.