jigar@19021993
Newbie level 4
i want to use zener diode in place of optocoupler for saving space... i m using transistor(NPN) and zener diode before transistor. i also pullup supply by 5 v. so is ground makes transistor on?
https://obrazki.elektroda.pl/7065010000_1391513942.png
this is image of conection i m making.
https://obrazki.elektroda.pl/7065010000_1391513942.png
this is image of conection i m making.