Re: How to get a constant current source?

thomson.eric@xxxxxxxxx wrote:
> ... Why is it so easy to find
> voltage sources at your local store (i.e., batteries!), but searching
> for current sources on the web leads to a complicated bunch of circuit
> diagrams?

Because batteries involve chemistry, and it is the nature of the
chemicals or matierals used to maintain a constant potential
difference. This is simply how nature works.

To make a constant current source requires (usually) some sort of
active feedback loop, to monitor the current output and adjust the
power source accordingly.

Mark

.

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