| 摘要 |
The temperature sensing circuit includes a source of constant current IS, a voltage divider R1, R2 and an output transistor T1 whose base collector circuit is connected parallel to the first resistor and whose base emitter circuit is connected parallel to the second resistor. An auxiliary source of current having a positive temperature coefficient is connected in series with the first resistor of the voltage divider to cause a voltage drop thereon having an opposite temperature coefficient than the output voltage US generated at the collector-emitter circuit of the output transistor. |
