[ Radanko @ 16.12.2010. 21:53 ] @
Nasao sam neku semu za samogradnju auto punjaca za laptop pa me zanima sledece: Moze li se sve naci u Beogradu od komponenti i koliko bi to sve skupa kostalo? Originalni punjac je 9.5v, 2.315A. i tesko se nalazi kod nas. Kako bi sve ovo funkcionisalo, pre svega stabilnost posto se radi o promenljivom naponu koji u automobilu varira od 11.x do 14.x V Evo nekih detalja sa uputstava. Parts List * 2x 10k resistor (R1 & R4) * 2x 22k resistor (R2 & R3) * 1x 1.5k resistor (R5) * 1x 120μF 25v electrolytic capacitor (C1) * 1x 2200μF 16v electrolytic capacitor (C2) * 1x 1N5822 Schottky diode (or equivalent) * 1x 9.1v 0.5W Zener diode * 1x BC337 NPN transistor * 1x LM2576T-ADJ IC * 1x 100uH, 3A inductor (e.g. Pulse PE92108KNL) * 25°C/W or better minature heatsink (e.g. Thermalloy 6073) * Cigarette lighter plug with 3A fuse and 2.1mm DC plug (e.g. DSE P1692) * 2.1mm DC chassis mount socket * 1.7mm x 4.75mm (ID x OD) DC plug and cable * Small plastic enclosure ![]() ![]() ![]() ![]() |