外国几个比较好的电子技术网站，里头有很多电路

guluan2631

不过因为是国外的，所以都是E文，得有点心理准备
http://www.4qdtec.com/index.html
http://ourworld.compuserve.com/homepages/Bill_Bowden/
http://www.ee.washington.edu/circuit_archive/circuits/
http://www.mitedu.freeserve.co.uk/schematics.htm
http://www.uslink.net/~cybercir/
http://www.psyber.com/~dibsed/dcircats.html
http://www.eedesign.com.tw/html/default.asp
http://www.commlinx.com.au/schematics.htm
http://www.aaroncake.net/circuits/
http://www.uoguelph.ca/~antoon/circ/circuits.htm
http://www.electronic-circuits-diagrams.com/
http://www.udl.es/usuaris/p4089324/electronica/esquemas.htm
http://tulungagung1.tripod.com/elektro.htm
http://www.epanorama.net/index.php?index=circuit
http://www.solorb.com/elect/
http://www.designnotes.com/Circuits.htm
http://www.hwb.acc.umu.se/circuit/index.html
http://jap.hu/electronic/
http://www.devrs.com/pic/
http://www.rentron.com/
http://www.rlocman.ru/en/
http://users.otenet.gr/~athsam/#Active
http://www.schematicsforfree.com/
http://www4.tpgi.com.au/users/talking/
http://www.wa4dsy.net/
http://www.jakehome.com.tw/ckt.html
http://www.hwb.acc.umu.se/
http://www.eedesign.com.tw/rumor/index.asp