| 摘要 |
PURPOSE:To take out an output terminal from the same plane, remove a loss of a generating voltage as in the case of the conventional type and attain a high sensitivity by disposing electrodes by dividing an inflection line of a piezoelectric diaphragm into an inside and an outside. CONSTITUTION:An upper section electrode 3 is disposed by being divided into a central section electrode 3a and an outside electrode 3b and an electrode 4 at a connecting section is also disposed by being divided into 4a, 4b. These dividing sections are situated at the inside and the outside of an inflecting line (a). Output terminals 7, 8 are connected to the electrodes 3a, 3b, thereby a generating voltage are taken out by superimposing in series. When the form of the electrode is circular, a lead wire is welded to a suitable position. |
