Is it possible to create a device that forces current in a practical design?

There are circuit configurations and IC's that can generate a constant current from a voltage source (current-mirrors are often used in analog ICs for that purpose) but none that can generate constant-current by themselves the way a battery generates a (mostly) constant-voltage.

Look up constant-current circuits, if interested.

What about doing an internet search for "constant current circuit"

Klaus

KlausST said:

What about doing an internet search for "constant current circuit"

Klaus

Click to expand...

crutschow said:

There are circuit configurations and IC's that can generate a constant current from a voltage source (current-mirrors are often used in analog ICs for that purpose) but none that can generate constant-current by themselves the way a battery generates a (mostly) constant-voltage.

Look up constant-current circuits, if interested.

Click to expand...

I know there are sources that can supply constant current.

But what I want is an answer to the question of which devices can force a current to be drawn regardless of other loads.

Hi,

a constant current source is .. what it´s name says. The current is constant .. independent of load impedance (for a limited range)

It´s very unclear what

to be drawn regardless of other loads

Click to expand...

means.

Textual description is not very useful to describe circuits
Thus some smart people invented schematics. So let´s use it!


Klaus

An inductor at the moment of shut-off attempts to continue carrying the same amount of Amperes as it did just beforehand. For a brief time it generates sufficient voltage to do this. The voltage can soar up to thousands, even to the point where sparks jump across conductors (arcing). To create a longer time (inductive time constant) while current fades, use a large Henry value and low ohms.