ゼロ点回路方式とセレン光電池について (第2報)

抄録

In the previous report we described the fundamental characteristics of selenium photocell which is used for the zero adjust system in the camera with exposure meter. And it was concluded that for the purpose of this, it is desirable for internal series resistance γ_s to be low and for parallel resistance γ_p to be high.
In this report we have discussed the manufacturing process which decide the value of γ_s and γ_p of selenium photocell. The contact surface between the selenium and the base metal, the quality of selenium, the shape of electrode, the sputtering condition of cadmium, etc. wnich influence the resistances of cell were discussed. In general we can settle the values of γ_s and γ_p independently: but in some cases there is a certain reciprocity, in which case it is necessary to select the most appropriate condition.