| 摘要 |
The temperature-dependent characteristics of a constant-voltage regulated power supply are determined by combining output voltages of a pair of circuits that have positive and negative temperature-dependent characteristics, respectively. One of the circuits includes an operational amplifier having resistors and diodes connected to its input terminals so as to provide a voltage having a positive temperature-dependent characteristic. The other circuit includes a diode or a transistor connected to the output of the operational amplifier for providing a voltage having a negative temperature-dependent characteristic. By adjusting the resistor values, the temperature-dependence, or lack of temperature-dependence, of the combined output voltage can be controlled.
|
