In the same way, an ideal voltage source in series with an impedance can be transformed into an ideal current source in parallel with the same impedance, where the new ideal current source has value I = V / Z.
22.
In the same way, an ideal voltage source in series with an impedance can be transformed into an ideal current source in parallel with the same impedance, where the new ideal current source has value I = V / Z.
23.
Conversely, if the current through an ideal current source is determined by some other voltage or current in a circuit, it is called a "'dependent "'or "'controlled current source " '.
24.
Th�venin's theorem allows a non-ideal current source model to be converted to a non-ideal voltage source model and Norton's theorem allows a non-ideal voltage source model to be converted to a non-ideal current source model.
25.
Th�venin's theorem allows a non-ideal current source model to be converted to a non-ideal voltage source model and Norton's theorem allows a non-ideal voltage source model to be converted to a non-ideal current source model.
26.
In contrast, using the active load of Figure 2, the AC impedance of the ideal current source is infinite regardless of the voltage drop " V CC-V out ", which allows even a large value of " V CB " . and consequently a large output signal swing.
27.
The factor ? ( R L / R S ) is the current feedback provided by the voltage feedback source of voltage gain ? V / V . For instance, for an ideal current source with " R S " = " ?, the voltage feedback has no influence, and for " R L " = 0 ?, there is zero load voltage, again disabling the feedback.
