Chris02
YAYPEL wrote:
tranzistor can be used any.
it;s used for open or close voltage from lm317.
offcurse you can't use tr-r like bu508 e.t.c,but bc548 it's good.
capacitors,can be used from from 0.1mF.
this 2 resistor make optput voltage value for phone.
for phone need 4.00v-4.22v.
here is simple schematics for conection.
i'am right,mr.Legija?
Ok, I checked the data sheet an saw it too.
THX