1962: Deco Electronics, Santa Monica, CA. Measurements in high-Q resonators. Developed and produced a 10 KW, 2 to 30 MHz Reflectometer-Phase Sensor. Proposal effort. (000102)
1964: Tasker Instruments, Van Nuys, CA. Design Engineer. Designed circuits for CRT displays. Developed Tasker Model 401 Character Generator. Project Management. (000103)
1966: RCA, Van Nuys, CA. Senior Member of the Engineering Staff. Designed computer-driven CRT alphanumeric and graphic displays. Factory follow-up. Documentation. (000104)
1971: David Kopf Systems, Tujunga, CA. Staff Engineer. Designed the electronic and electromechanical systems for the Cordis DIALYSYSTEM™ dialysis machine. (000105)
1975: Self-employed as a consultant in dialysis machines. (000106)
1976: Organon Teknika, Chatsworth, CA. Senior Engineer. Designed the electronic and electromechanical systems for the PERICYCLE™ dialysis machine. (000107)
1979: RCA/Sperry Avionics Systems, Van Nuys, CA. Principal Member of the Engineering Staff. Electronic flight instruments: designed circuits for data acquisition systems and color CRT displays for commercial aviation. (000108)
1982: Symbolics, Chatsworth, CA. Member of the Technical Staff. Investigated high-resolution video monitors. (000109)
1982: General Consumer Electronics, Santa Monica, CA. Senior Project Engineer, VECTREX™ mini-arcade system. Responsible for digital and analog circuits design. Sustaining engineering. Cost reduction. Liaison and problem solving at factories in Hong-Kong and Taipei. (000110)
1984: Terminal Data Corporation, Moorpark, CA. Member of the Technical Staff. Electronic imaging: principal design engineer of CCD cameras for film and paper. Real time video processing. Servo-controlled fluorescent document illumination systems. Troubleshooting. Documentation. Factory-follow-up. (000111)
1989: Panavision, Tarzana, CA. Director of Video R&D. Designed and built the VFP-2 color video flicker processor and other video boosting, processing and synchronization circuits for cinema video assist. (000112)
1991: Self-employed as a consultant. Designed, patented, built and tested the first version of the key technology of the RayVan Artificial Cochlea. (000113)
1995: Applied Display Technology, Westlake Village, CA. Senior Design Engineer. Troubleshooting, design, prototyping and production of analog and digital circuits for color Liquid Crystal Displays. (See also 1997.) (000114)
1996: Rosen Motors, Woodland Hills, CA. Senior Member of the Technical Staff. Design of switching power supplies and documentation (OrCad, MathCad, Adobe Photoshop.) (000115)
1997: Applied Display Technology, Westlake Village, CA. Senior Design Engineer. Troubleshooting, design, prototyping and production of analog and digital circuits for color Liquid Crystal Displays. (See also 1995.) (000116)
1999 to present: Designed and built an infrastructure for testing and demonstrating potential applications of "The RayVan Artificial Ear." Ongoing project to explore the potential contribution of spectrum analysis of heart sounds and brain waves in real time. (000117)