| 摘要 |
The present invention is to provide a temperature controller capable of being stably operated at the time of being connected to a personal computer. The temperature controller is capable of being connected to the personal computer. The temperature controller is operated by supplying a power source from the computer and operated by supplying a general power source. A voltage used in the temperature controller includes a first voltage (range a) for processing a digital signal. The temperature controller includes a feedback circuit for monitoring a change in the first voltage flowing in the temperature controller and when detecting that the first voltage exceeds a predetermined value (4.9 V), lowering supply of the general power source, and a voltage (range b) of the power source supplied from the computer is smaller than the predetermined value. |
