Question

What is the difference between a voltage source and a current source. Battery is a voltage source, i guess. Any example of a current source?

Answer 1

A current source varies the output voltage to maintain the desired current.
A voltage source has a constant output regardless of the current draw
.

Answer 2

A Van de Graaff generator is an example of a high voltage current source.

The Van de Graaff generator can be thought of as a constant-current source connected in parallel with a capacitor and a very large electrical resistance.

Answer 3

above is a schematic view of classical van_de_graaff_generator

Answer 4

Ok, but what is the practical use of a current source? What type of circuits needs a constant current source?

Answer 5

A current source is an electrical or electronic device that delivers or absorbs electric current. A current source is the dual of a voltage source.
Amplifiers circuits need dependent/in dependentent current sources .(vccs.cccs,etc)!!!!

Answer 6

some circuits are!!!!!!!!!!!!!1

Answer 7

thank you. your word helped me..