Omron Tateisi Electronics Co.

Seiji Oku

Fumiaki Itsuki

Toshiya Tanamura

Kazutomo Naganawa

Tooru Shimamura

This multi channel temperature controller includes several temperature sensors, an electronic multiplexer which receives output signals from these temperature sensors and which sequentially supplies these signals to its output according to the switching action of a selection signal, and an amplifier which receives the output of the electronic multiplexer. Thereby, noise such as due to thermal electro motive force generated in the contacts of prior art sets of reed relays for switching over such temperature sensor output signals can be eliminated. Further, optionally, there may be provided several input circuits, one interposed between each of these temperature sensors and the electronic multiplexer, and each including a capacitor which has electrostatic capacitance substantially greater than the electrostatic capacitance existing between its input circuit and the corresponding temperature sensor. Thereby, common mode voltage noises are eliminated or minimized.

Multi channel temperature controller utilizing electronic multiplexer

A reflection-type photoelectric switching apparatus comprising a lamp for projecting light rays to an object, a photoelectric element for receiving reflected light rays from the object, a reference photoelectric element mounted on a board in side-by-side relation with the photoelectric element, a light conducting means for guiding a part of said light rays from the lamp to the reference photoelectric element, and an adjusting means for adjusting the quantity of light rays guided by the light conducting means to be balanced with that of the reflected light rays received by the photoelectric element.

Growing community of inventors

Osaka, Japan

Seiji Oku