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  1. andrie1

    sucurity system using barcode

    hi! i have project to build a ecurity system using barcode. i plan to use it on my motorcycle. right now i stuck on some transistor stuff, please help me.. here is the idea : i'll build my project on AVR2313. this uC were used to calculate the data in barcode, and compare it with data had been...
  2. andrie1

    pnp vs npn?

    excuse me.. 2 all electro master outthere. could u please help me. i'm sorry if it's very basic theory but i really dont get the idea. what is the differences between transistor PNP and NPN in the application? sorry 4 my bad english  ::) thanx
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