| 摘要 |
The current mirror circuit has two bipolar transistors (10,12) and a reference current source (14). A further current mirror circuit (16,18,20) has an input branch between the supply voltage terminal and ground and an output branch between the supply voltage terminal and the connected bases of the transistors for generating a base current (Ib) for these transistors. A current source (20) controlled by the collector voltage of the first bipolar transistor is located in the input branch of the further current mirror circuit (16,18,20). The output (2Ib) of this current source is mirrored in the output branch of this circuit. |
