Location History:
- Paris, FR (1985 - 1993)
- Saint-Quen Cedex, FR (1998)
Company Filing History:
2 out of 368 
2 out of 941 
1 out of 14 Years Active: 1985-1998
Title: Innovations of Jean M Pierret
Introduction
Jean M Pierret is a notable inventor based in Paris, France. He has made significant contributions to the field of electrical engineering, particularly in the development of voltage reference circuits and battery charging regulators. With a total of 4 patents to his name, Pierret's work showcases his expertise and innovative spirit.
Latest Patents
One of his latest patents is a "Voltage reference circuit with programmable thermal coefficient." This invention comprises first and second bipolar transistors with their base terminals connected together and collector terminals linked to a current mirror circuit. The design includes a unique configuration where the emitter terminal of the first transistor is grounded through two resistors in series, while the second transistor's emitter is connected to a node between these resistors. This innovative approach allows for discrete portions of the emitter to be electrically connected in a predetermined manner.
Another significant patent is the "Voltage regulator device for charging a battery by an alternator." This device is designed to charge a battery from an alternator that delivers a rectified voltage with a ripple component. It features a regulator circuit that acts on the mean value of the rectified voltage, incorporating a threshold comparator, a time delay circuit, and a power stage to control the current through the alternator's excitation winding. The invention includes a negative feedback circuit that enhances regulation frequency under heavy load conditions.
Career Highlights
Throughout his career, Jean M Pierret has worked with prominent companies such as Valeo Équipements Électriques Moteur and STMicroelectronics. His experience in these organizations has contributed to his development as an inventor and has allowed him to apply his innovative ideas in practical applications.
Collaborations
Pierret has collaborated with talented individuals in his field, including Alessio Pennisi and Fabio Marchio. These partnerships have likely fostered a creative environment that encourages the exchange of ideas and advancements in technology.
Conclusion
Jean M Pierret's contributions to electrical engineering through his patents and collaborations highlight his role as an influential inventor. His innovative designs continue to impact the industry and inspire future advancements.
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