How to create a current source

[balavinayagam]

Hi all. I need to create a 5 amp current source . load varies from 50 to 100 milli ohm?
Can any one help me ? Any way without using current transformer ?

thanks for help

 

[grvkpr18]

Hi all. I need to create a 5 amp current source . load varies from 50 to 100 milli ohm?
Can any one help me ? Any way without using current transformer ?

thanks for help


You can use power transistors in current mirror configuration.......i think that may help you

 

[keith1200rs]

AC or DC?

Keith

 

[balavinayagam]

. Dc current source

 

[keith1200rs]

There are variations, but a basic current source would be:

https://en.wikipedia.org/wiki/File:Op-amp_current_source_with_pass_transistor.png

With bipolar transistors you would need some extra gain (using a darlington for example) or you could use a MOSFET. You can design them with the load in the collector as well.

Keith.

 

[balavinayagam]

It was useful
Thank you