Practical Current Source Ideal model of a Current Source Model of a Practical Source

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Session 11 B: Focus
 Practical Current Source
◦ Ideal model of a Current Source
◦ Model of a Practical Source

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Practical Current Source

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Practical Current Source (IL Vs VL)
OC: Open Circuit SC: Short Circuit

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Practical Equivalent Sources

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Equivalent Sources
 A practical voltage source can be electrically
equivalent to a practical current source
◦ When a load resistor RL is connected to either source, load
will have the same vL and iL from the source
◦ This means that we can replace one practical source with
the other and the rest of the circuit will not know the
difference
Rser
Rpar

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What could be the range of RL?
 The lowest RL could be zero
◦ Short Circuit (connecting the load terminals by a wire)
 And the highest RL could be ∞
◦ Open Circuit (leaving the load terminals open)
Rser
Rpar

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Session 11 B: Summary
 Current Source
◦ Ideal model
◦ Model of a Practical Source

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References
Ref 1 Ref 2