• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Precision voltage regulator

Status
Not open for further replies.

Doomguy42

Member
Hi,
I'm a newbie looking to re-engineer some old Pcb's. There's a obsolete Precision voltage regulator Zn404 or Zn458 which are difficult and expensive to get hold of now. I was wondering if anyone has any suggestions on any potential circuit solutions? It's 2.45volts so it might be substandard?
Thanks
 

crutschow

Well-Known Member
Most Helpful Member
A TL431 is a common, similar shunt regulator with a 2.5V internal reference.
If you actually need 2.45V, you could use a 2-resistor voltage divider to drop the voltage.
 
Last edited:

ronsimpson

Well-Known Member
Most Helpful Member
The TL431 with no resistors is 2.50 volts. There are different versions 1% 2% maybe 0.5%. So you misted the 2.45 by 0.05. Maybe that is close enough.
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top