Anyone have the infomation on the circuit of the Cello products?

[hatasa]

another

 

[hatasa]

again!😀

 

[hatasa]

another😀

 

[hatasa]

🙂

 

[Peter Daniel]

Ofcoz they are all in old generation....

I knew that the lastest one already using the green board!

You should know that the latest boards on this forum come in blue.😉

Thanks for the pictures.

 

[hatasa]

I dont know the lastest one in blue already
I just know the green one....

Is there really no ppls have the schematic of the Cello products?😕

 

[Elso Kwak]

Cello Schematic

Hi hatasa,
If you tell us the part numbers of the transistors and maybe some voltage readings at the screws I will make a serious effort to back-engineer this little PCB with aid of your pictures. Can't be that difficult. It is a very simple schematic. Apparently no differential amplfier at the input.😉

Peter, Yes the Rifa's are for DC blocking purposes. I did not know they were bright. 😉