Mike Engelhardt Explained
Mike Thomas Engelhardt is an American computer programmer, author, and entrepreneur.[1] He is renowned for developing the SPICE-based analog electronic circuit simulator computer software known as LTspice and QSPICE.[2]
Personal life
Mike grew up in rural Michigan. His college degrees are: Bachelors in Physics (1981) from University of Michigan (Ann Arbor, Michigan, United States); Masters in Physics (1983) from University of California, Berkeley (Berkeley, California, United States).[3]
He was Director of Simulation Development at Linear Technology, employed from March 1998 to December 2019.[3]
He is currently a managing member of Marcus Aurelius Software, which was started in January 2020.[3]
Software
Mike has written simulators since 1975. The following is a list of software which Mike was either the sole or primary developer:
- 1992 – First known port of SPICE (3E2) to Linux.[1]
- 1998 – SwitcherCAD released internally at Linear Technology.[1]
- 1999 – SwitcherCAD III released to public.[1] It ran on Windows 95, 98, 98SE, ME, NT4.0, 2K, XP.
- 2008 – LTspice IV released.[1] It ran on Windows 2K, XP, Vista, 7. A native macOS 10.7+ application was introduced in 2013.
- 2016 – LTspice XVII released.[1] It ran on 32 or 64-bit Windows 7, 8, 8.1, 10; and macOS 10.9+.
- 2023 – QSPICE beta released.[2] Initially, it is designed to run on Windows 10 and 11.
Bibliography
The following is a list of articles and patents that Engelhardt authored or coauthored.
- Articles
- Design and Characteristics of a Lens Spectrometer with Electrostatic Extraction for Electron Beam Probing; Microelectronic Engineering (Elsevier); 6 pages; March 1992.[4]
- Design and Characteristics of a Magnetic Collimating Lens Spectrometer for Electron Beam Probing; Microelectronic Engineering (Elsevier); 6 pages; February 1996.[5]
- SPICE Differentiation; LT Journal of Analog Innovation (Linear Technology); 7 pages; January 2015.[6]
- Articles (coauthor)
- Soft X-Ray Photoemission with the SSX-100 Spectrometer; Nuclear Instruments and Methods in Physics Research (Elsevier); 4 pages; May 1986.[7]
- Patents
- US Patent 7502723, filed in 2005, "Asymmetric minor hysteresis loop model and circuit simulator including the same".[8]
- US Patent 8686702, filed in 2012, "Negative slope compensation for current mode switching power supply".[9]
- US Patent 10637254, filed in 2015, "Spread spectrum for switch mode power supplies".[10]
- US Patent 9866245, filed in 2016, "Active differential resistors with reduced noise".[11]
- US Patent 10218394, filed in 2017, "Active differential resistors with reduced noise".[12]
- Patents (coauthor)
- US Patent 8274266, filed in 2009, "Switch mode power supply with dynamic topology".[13]
- US Patent 9966832, filed in 2017, "Predictive ripple-cancelling signal into error amplifier of switch mode power supply".[14]
- US Patent 10270330, filed in 2018, "Predictive ripple-cancelling signal into error amplifier of switch mode power supply".[15]
External links
Notes and References
- Web site: LTspice Genealogy – The Heritage of Simulation Ubiquity . LTwiki . https://web.archive.org/web/20181202213202/http://ltwiki.org/index.php?title=LTspice_Genealogy_-_The_Heritage_of_Simulation_Ubiquity . December 2, 2018 . live.
- Web site: Re-writing SPICE for a digital world . EE News Power . https://web.archive.org/web/20230514031753/https://www.eenewseurope.com/en/re-writing-spice-for-a-digital-world/ . May 14, 2023 . May 10, 2023 . live.
- https://www.linkedin.com/in/mike-engelhardt-a788a822 Mike Engelhardt; LinkedIn.
- Engelhardt . Mike . Design and Characteristics of a Lens Spectrometer with Electrostatic Extraction for Electron Beam Probing . Microelectronic Engineering . March 1992 . 6 pages . Elsevier.
- Engelhardt . Mike . Design and Characteristics of a Magnetic Collimating Lens Spectrometer for Electron Beam Probing . Microelectronic Engineering . February 1996 . 6 pages . Elsevier.
- Engelhardt . Mike . SPICE Differentiation . LT Journal of Analog Innovation . January 2015 . 7 pages . . https://web.archive.org/web/20180517031046/https://www.analog.com/media/en/technical-documentation/lt-journal-article/ltjournal-v24n4-01-df-spicedifferentiation-mikeengelhardt.pdf . May 17, 2018 . live.
- Soft X-Ray Photoemission with the SSX-100 Spectrometer . Nuclear Instruments and Methods in Physics Research . May 1986 . 4 pages . Elsevier.
- https://patents.google.com/patent/US7502723 U.S. Patent 7502723.
- https://patents.google.com/patent/US8686702 U.S. Patent 8686702.
- https://patents.google.com/patent/US10637254 U.S. Patent 10637254.
- https://patents.google.com/patent/US9866245 U.S. Patent 9866245.
- https://patents.google.com/patent/US10218394 U.S. Patent 10218394.
- https://patents.google.com/patent/US8274266 U.S. Patent 8274266.
- https://patents.google.com/patent/US9966832 U.S. Patent 9966832.
- https://patents.google.com/patent/US10270330 U.S. Patent 10270330.
