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Expert is an electrical engineer with extensive experience in electronic and electromechanical design. His expertise includes linear systems design and analysis, linear signal processing, system interfacing, and familiarity with C and Fortran programming languages. He has built a solid reputation as an analog circuit design engineer and general problemsolver.

Expert applied analog circuitry to solve the problem of detecting the feeding of two or more sheets of paper through an input scanner, where the separate sheets can be of different stocks. The solution involved the creation of an ultrasonic sinusoid that was then passed through the paper via a pair of transducers. The resultant response amplitude and phase were measured. The design was completely self-compensating for the inherent signal phase shifts and attenuation. Ultimately, the linear outputs of the system were interpreted by a microprocessor.

When asked to provide a system that would detect the passage of a dummy product moving along a packaging line, Expert designed a radio frequency-based solution modeled after the Grid Dip Meter principle. The system consisted of a swept sinusoidal source fed into a loop antenna on one side of the conveyor belt and synchronously detected on the other side by a similar antenna. The dummy consisted of a tuned coil that adsorbed the RF energy when it passed and the detector would sense that and stop the line. This system was very robust and operated reliably in a high industrial electrical noise environment.


To control the temperatures of various subsystems within a blood analyzer, Expert developed computer control algorithms that controlled to within 0.05 degrees Celsius. This task was all the more difficult because the heaters and coolers were sized at the power levels only necessary for steady state operation. To obtain the stated accuracy he used a proportional plus integral controller model, modified so that the integrator windup of the system during the startup phase was completely eliminated and the temperature showed no overshoot as it came within the control zone.


Expert provided the overall system design and the individual circuit design for a slide projector auto-focus photocell leakage tester. This piece of test equipment was computer controlled to facilitate its usage on the production line. It involved test signal generation and detection along with conversion to feed data to the computer. He designed the testing algorithms that were then programmed into the computer by other team members. This unit allowed production workers to do go/no-go testing of the cells with automated documentation of the results.

In one situation Expert worked on a very small high-powered magnetic component of an optical shutter assembly needed to be measured to high levels of accuracy. He designed a quadrature electronic magnetometer that measured the strength and direction of the magnet's internal vector to within 0.1 gauss and 0.2 degree accuracy. These specifications exceeded the project goals.


Testing of the frequency response of magnetic actuators of the type used in optical disk drives requires a moderately high power linear current generator with a bandwidth into the tens of kilohertz. Expert designed such a unit that was able to output up to three-quarters of an ampere, peak-to-peak, over a bandwidth of almost one hundred-kilohertz into the poorly defined load characteristics of magnetic actuators.

An electro-photographic printer project required a linear laser driver that would create gray scale directly rather than by two level half-toning, which would require inordinately high data rates in the system being designed. Expert conceived and designed a microcomputer controlled very high speed laser current generator that was re-calibrated, line by line, by measuring its transfer-function during the dwell time and updating driver parameters on the fly. This system was able to print near photographic quality images on plain paper at high page rates.

Expert has provided an on-site design review for a medical products company concerning a cortical stimulator product.