7805 as a constant current source

S

SATHYA_8794

New Member

• May 30, 2017

• #1

Hi,

I need to design a constant current source of 0.45A using the voltage regulator 7805. Can someone let me know how to go on about it?

Thanks in advance

 

Ian Rogers

User Extraordinaire

Forum Supporter

Most Helpful Member

• May 30, 2017

• #2

There is a thread here..
https://www.electro-tech-online.com...gulator-as-current-regulator-question.118550/

 

ci139

Active Member

• May 31, 2017

• #3

there's some calculation examples
https://www.circuitstoday.com/fixed-positive-voltage-regulators

• spice check
  
  notice the 10Watts on 7805 !!

 

Last edited: May 31, 2017