What is the current through a dependent voltage source?
A dependent source is a current or voltage source whose value is not fixed (i.e., independent) but rather which depends on some other circuit current or voltage. The general form for the value of a dependent source is Y=kX where X and Y are currents and/or voltages and k is the proportionality factor.
How do you find the power supplied by a dependent source?
In order to calculate the power consumed (or delivered) by a dependent source, you should 1) calculate the current through and the potential across the source. 2) multiply the current times the voltage. If current is flowing from the positive terminal of the source, then the source is supplying power.
How to express voltage across a dependent source?
If it were a dependent current source, the voltage across is not fixed by the source but, rather, by the attached circuit. In other words, there is no general formula to express the voltage across a current source in terms of the current through.
How to write dependent sources in a circuit?
If there are dependent sources in the circuit, write down equations that express their values in terms of other node voltages. There is one dependent source, which is a current controlled current source. We need to write in terms of node voltages. is the current passing through the – resistor.
When does a power source depend on a current?
On occasion, such as with a current mirror, a power source in real life depends on the voltage or current in another portion of the circuit. This is modeled with dependent power sources. They complicate circuit analysis but they shouldn’t be too scary as they simply replace one bit of math with another.
How to calculate the power of a voltage source?
Here is the system of equations that we need to solve and obtain nd : All node voltages are determined. Now, the power of voltage sources can be calculated from the node voltages. For each source, we need to find the voltage across the source as well as the current flowing through it to compute the power.