| 摘要 |
<p>A temperature detecting circuit generates an output signal depending on temperature and unaffected by variations of power supply voltage. The temperature detecting circuit provides a diode (7) which generates a voltage across two terminals depending on the temperature, a first resistor connected (8) to the anode of this diode, a second resistor (9) whereof one end is earthed, first and second transistors (10,11) for applying a fixed voltage to the first and second resistors (8,9) third and fourth transistors (12,13) supplied by the current flowing through the first and second resistors (8,9) fifth and sixth transistors (14,15) to the bases of which the emitter currents of the third and fourth transistors (12,13) are applied, and seventh and eighth transistors (16,17) to the bases of which the emitter currents of the fifth and sixth transistors (14,15) are applied. The output current from the output terminal (20) varies according to the temperature, but does not vary with the power supply voltage. <IMAGE></p> |
