主动元器件和被动元器件（Active components and passive components）.docVIP

主动元器件和被动元器件（Active components and passive components） Active element and passive components The active component (active component) is a kind of obtained by the current direction, or rely on the direction of the current element. Examples of active components such as transistors, silicon controlled rectifier, diodes, valves etc.. Passive components (passive component) is a kind of electronic components, does not require a source of energy and the implementation of his specific function. There are many examples of passive resistance, capacitance and inductance components such as data. Simply speaking is required to (electric) source device called active devices without energy (electricity) source device is passive devices. Active devices are generally used for signal amplification, transform, passive devices used for signal transmission, or signal amplification by direction. Tolerance, resistance and sense are passive devices, also called passive components. Passive devices do not implement the control does not require any input device can complete its function -- is not smart. Resistance, capacitance, inductance, connectors are passive. The active device can control the voltage or current in a circuit or create switching action -- it is intelligent. Diode, triode, IC, crystal, sensors are active. Also called active components. Active components and passive components is called a layman. Should be called active and passive components. A simple definition of 1. passive devices If the electronic components work, no internal power in any form, this device is called passive devices. From the circuit character, passive device has two basic characteristics: (1) or its power consumption, or change the electric energy to other forms of energy. (2) only need to input signal, does not require an external power supply can work normally. The basic definition of 2. active devices If the electronic components work, the internal power supply, this device is called active devices. Fr