diy didi
Member
I built 2 bench power supplies a couple of years ago. One of the sections of the circuit uses a conventional constant current source with a zener and npn transistor. Textbook stuff.
They used a 3,3V zener which isn't great and varies with temperature along with the Vbe junction of the transistor.
Is there s better way to reference the 3,3V?
Maybe a TL431?
They used a 3,3V zener which isn't great and varies with temperature along with the Vbe junction of the transistor.
Is there s better way to reference the 3,3V?
Maybe a TL431?