Setting Up a Current Source: Parallel Resistances

AI Thread Summary
Using parallel resistances in a current source setup is essential because it allows the current to divide among the branches, which is not possible in a series configuration where the current remains constant. This division is crucial for achieving the desired current levels in the circuit. The discussion also touches on the relevance of Thevenin and Norton equivalent circuits in understanding these configurations. Clarification is sought on whether the inquiry pertains to practical setups or simulations. Understanding these principles is vital for effective circuit design.
fusion911
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To set up a current source why do we need to place the resistances in parallel rather than than placing them in series.
 
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well I think that's because the current divides in the parallel circuit.

It would be same throughout in the series circuit, so there might be no use for a sonnection in the series. And it also depends on the amount of current needed through the circuit.

I think
 
fusion911 said:
To set up a current source why do we need to place the resistances in parallel rather than than placing them in series.

Welcome to the PF. Are you asking about Norton and Thevinin Equivalent circuits?

http://en.wikipedia.org/wiki/Thévenin's_theorem

.
 
fusion911 said:
yes
the very same

Ok, then did the link answer your question? And what do you mean by "set up" a current source? Do you mean in a simulation?
 

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