hi franco bro
thx's for Additions ;
* what is the point of using c2(100nf) between pin4(the Ground) and pin8(the power) of ic1 in DC Amp. stage ?
so we got now 4 leds instead of 3 leds ?
*why you using D1,D2 and D3 instead of A less value of ZD2 in 3 leds display stage ?
regards **