A accompanied voltage source is a voltage source connected to two circuit nodes. When calculating the Devenin equivalent circuit or NORTON equivalent circuit of a circuit, the structure of a voltage source and a resistor in series or a current source and a resistor in parallel can be considered as an adjoint voltage source to simplify the analysis. The voltage value of this adjoint voltage source is equal to the measured voltage value of this circuit node minus the series resistance of the two nodes multiplied by the current passing through them.
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In circuit analysis, the adjoint voltage source is a common simplified model. Its function is to simplify the circuit analysis by leaving only series resistance or parallel conductance between two circuit nodes. Some circuit analysis software can also automatically convert the voltage source in the circuit to an adjoint voltage source for simplification.
A companion power supply is a power supply device with wireless charging function. It can charge smartphones, tablets, and other devices that support wireless charging without the need for a charging cable connection. The companion power supply usually has a charging base and a built-in wireless charging pad. Users simply place the device on the charging dock to start wireless charging. This charging method avoids the entanglement of the charging line and is more convenient and fast. A companion power supply is also often equipped with a USB interface, which can be charged for other devices by wired means. This portable and small power supply device becomes the ideal companion for the power needs of modern life.
A companion power supply refers to a power supply device with a backup power supply function. It usually contains a built-in battery that can automatically switch to the standby power supply mode when the normal power supply is interrupted to ensure the stable operation of the device. The companion power supply can be widely used in various scenarios, such as computers, communication equipment, medical devices, etc. Its function is to prevent device shutdown or data loss caused by sudden power interruption, so as to ensure the stable operation of devices and applications. The reliability and continuous power supply ability of companion power supply are important criteria to evaluate its performance.
Current source and impedance is called companion, otherwise there is no companion.