Electrochemical Deposit Time Switch

The authors have developed the electrochemical time switch for A. C. current consisting of a copper electrode, two tantalum electrodes having an oxidized film Ta_2O_5,and CuSO_4 solution. Copper electrode is called regulating electrode and two tantalum electrodes are called main electrode. The current which passes the regulating electrode is called regulating current and the current which flows between two main electrodes is called main current. Duration time of main current depends on the working time of regulating electrode. Deposition of copper on the surface of Ta_2O_5 film due to the regulating current permits the current flow between two main electrodes. Examples of working of this electrochemical time switch are presented.