Converting 5v output to 3.3v output

M

madaxe

New Member

• Aug 30, 2020

• #1

If I add R4 @ 2.2K and R5 @ 3.3K will this reduce my output signal to 3.3V? from 5v

Thanks

Madaxe

 

alec_t

Well-Known Member

Most Helpful Member

• Aug 30, 2020

• #2

If you post a schematic we'll probably be able to tell you.

 

S

schmitt trigger

Well-Known Member

Most Helpful Member

• Aug 30, 2020

• #3

With your provided values, the voltage will be 3V, not 3.3V, and that will only be true if whatever load connected to CN2 is high impedance.

Do you know how to calculate voltage dividers? Otherwise there are many voltage-divider online calculators, which will provide you with real, not theoretical values, and give you the error budget.

 

M

madaxe

New Member

• Aug 30, 2020

• #4

here is a schematic i used to build the original circuit board

 

P

Pommie

Well-Known Member

Most Helpful Member

• Aug 30, 2020

• #5

What is the sensor and what is Vcc?

Mike.

 

Externet

Well-Known Member

• Aug 30, 2020

• #6

Search for "3.3V low dropout regulator"