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Application filed by Eric YangfiledCriticalEric Yang
Priority to TW94112993ApriorityCriticalpatent/TWI262978B/en
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Publication of TWI262978BpublicationCriticalpatent/TWI262978B/en
Publication of TW200637964ApublicationCriticalpatent/TW200637964A/en
A lock apparatus includes a main body, a bolt, a tab, a piezoelectric element and a circuit board. The main body has a center hole. The bolt is disposed in the hole. The tab is disposed to an end of the bolt. The piezoelectric element is connected to an end of the tab, and the circuit board is electrically connected to the piezoelectric element. Accordingly, when the piezoelectric element is electrified through the circuit board, the tab is driven to move from an end of the bolt. The bolt then slides simultaneously to achieve the unlock effect.
Capacitor used for filtering electromagnetic interferences in electronic devices comprises electrodes and connections arranged so that the external magnetic fields produced by a current are compensated for