VIBRATION DEVICE AND IC CARD INCLUDING THE SAME

To provide a vibration device that can obtain sufficient vibrations with a small number of components and a simple structure.SOLUTION: A vibration device 1 includes: a coil pattern 110; a DC generation circuit 120 that converts an induced electromotive force produced in the coil pattern 110 into a D...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	OGURA SHUNSUKE, TOMONARI TOSHIO, FUJINE MASAYOSHI, KANEKO SHIGERU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR CALCULATING COMPUTING COUNTING DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PRESENTATION OF DATA PUBLIC ADDRESS SYSTEMS RECOGNITION OF DATA RECORD CARRIERS SOUND-PRODUCING DEVICES
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	To provide a vibration device that can obtain sufficient vibrations with a small number of components and a simple structure.SOLUTION: A vibration device 1 includes: a coil pattern 110; a DC generation circuit 120 that converts an induced electromotive force produced in the coil pattern 110 into a DC voltage; a driving circuit 130 that generates a driving signal S having a predetermined frequency based on the DC voltage; and a piezoelectric element 140 that is displaced in response to the driving signal S. The driving signal S has a substantially vertical rising waveform. This enables sufficient vibrations to be obtained with a small number of components and a simple structure.SELECTED DRAWING: Figure 4 【課題】部品点数が少なく簡単な構造で十分な振動を得ることが可能な振動デバイスを提供する。【解決手段】振動デバイス１は、コイルパターン１１０と、コイルパターン１１０に生じる誘導起電力を直流電圧に変換する直流生成回路１２０と、直流電圧に基づいて所定の周波数を有する駆動信号Ｓを生成する駆動回路１３０と、駆動信号Ｓに応じて変位する圧電素子１４０とを備える。駆動信号Ｓは、略垂直な立ち上がり波形を有する。これにより、部品点数が少なく簡単な構造で十分な振動を得ることができる。【選択図】図４