situs favorit

Engineering
http://www.electronics-tutorials.ws/
http://engineeringtutorial.com/

smps
http://danyk.cz/impulz3_en.html 12V 5A switched power supply
http://danyk.cz/iz350_en.html Switched power supply 2x 35V 350W
http://www.danyk.cz/nab_ab_en.html Switching charger for car batteries
http://9zip.ru/home/uc3842_uc3843_charger.htm
http://320volt.com/

Transistor
http://www.semicon-data.com/
https://alltransistors.com/

Indonesia
https://zaenalelectronic.blogspot.co.id/
http://marsonotv.blogspot.co.id/