7805 as a constant current source

[SATHYA_8794]

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]

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

 

[ci139]

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

• spice check
  
  notice the 10Watts on 7805 !!