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Definition of "Input Impedance" |
The impedance that a circuit sees looking into a circuit's input. Impedance presented to the transmitter by the transmission line and its load. / The input impedance of an electrical network is the equivalent impedance seen by a power source connected to that network. / A bipolar transistor is a semiconductor device commonly used for amplification. The device can amplify analog or digital signals. It can also switch DC or function as an oscillator. Physically, a bipolar transistor amplifies current, but it can be connected in circuits designed to amplify voltage or power. / (1) when a voltage is applied to a conducting material, a current will flow through the material. The ratio of the voltage to the current is known as the input impedance and is a complex number with magnitude measured in units of ohms. |
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