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Instructors

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Jim Weir

Jim has been teaching in the CA Community College system since 1971, first at Miramar College in the Aircraft Inspection and Maintenance dept., and since 1981 in the Electronics and Mechatronics program at Sierra College. He is currently the Vice President and Membership Chair for the Sierra College Faculty Association.  

He attended Grossmont Community College and graduated from San Diego State University in 1967 with a degree in Physics, Mathematics and Aerospace Studies. When not teaching, he finds time to run his aviation electronics manufacturing company, write a monthly column for a national aviation magazine, teach student pilots, inspect aircraft for airworthiness, keep the orchard trimmed, plant the garden, and take the airplane up for the occasional pleasure flight.

Prior to his academic career, he worked on the space program (Apollo, Surveyor, and Viking) and put himself through school as a mechanic for Pacific Southwest Airlines (PSA).  

Jim lives in Grass Valley on a couple of acres of garden and orchard with Gail (also a flight instructor and consummate web guru),  Katie (the Sheltie), Ollie (the Lhasa Apso), and Charly and Gnarly (the pound brother kitties and world-class ratters).

Contact Info:
jweir(at)sierracollege(dot)edu
Claudio Bravo

Claudio Bravo teaches electronics classes at the Tahoe/Truckee campus and has a very cool accent.

 

However, declining to send a biography to our webmaster due to claims of being in the witness protection program sounds unlikely to us. ROFL.

Contact Info:
cbravo(at)sierracollege(dot)edu
Nathanael Griesert

Nathanael Griesert is a proud alumni of Sierra College and has earned degrees in electrical and computer engineering from Cal Poly San Luis Obispo and UC Davis.

 

Nathanael has worked for National Semiconductor since 1998 as a design engineer inventing analog and mixed signal integrated circuits for applications in mobile electronic devices and systems. His favorite chip designs have been ones that involve communication with various sensors in mobile devices that process "real world" information to do something useful with it. 

 

He is excited to be a part time faculty member of the Mechatronics program where he can teach practical knowledge and skills for solving real problems in a variety of careers. 

 

Nathanael enjoys hiking, biking, running, swimming, and other active outings in the great outdoors.

Contact Info:
ngriesert(at)sierracollege(dot)edu
Alysia Lopez

 

Alysia is the lab technician for the Mechatronics program. Based in Rocklin, she also helps make sure that our NCC and Truckee campuses have all the working equipment and supplies needed to teach our program. She is an indispensable member of our team. Have a question? If Alysia can't help you out, she definitely knows who can.

Contact Info:
(916) 660-7862    alopez(at)sierracollege(dot)edu
 
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