multiple power sources (DC circuits)
I have a general question.
I can calculate series and parallel circuits ok, with one power source, such as a battery but how do I work out resistance values when there are two power sources (in a DC circuit)?
For example, two 9v batterys wired in series, with 1 X 5 ohm and 1 X 10 ohm resistor and a 12v lamp - all in series.
power source individually, by disabling all but one source, and add the effects.
To disable a voltage source replace it with a short circuit. To disable a current source
replace it with an open circuit.
For two equal voltage sources in series disabling one source gives you a current V/R.
Disabling the second source also gives you a current V/R. Adding the two currents
together gives you 2V/R.
(* jcl *)
|circuits, dc circuits, multiple, power, sources|
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