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市場上的消費電子產(chǎn)品已經(jīng)開始逐步采用觸摸感應按鍵,以取代傳統(tǒng)的機械式按鍵。針對此趨勢,益登科技設計出以Silicon Labs公司MCU為內核的電容式觸摸感應按鍵方案。電容式觸摸感應按鍵開關,內部是一個以電容器為基礎的開關。以傳導性物體(例如手指)觸摸電容器可改變電容,此改變會被內置于微控制器內的電路所偵測。電容式觸摸感應按鍵的基本原理
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Sub-Miniature Pushbutton Switches HOW TO ORDER -118- PA Series PA S ub -M in ia tu re Pu sh bu tto n S w itc he s INITIAL CONTACT RESISTANCE: INSULATION RESISTANCE: 1G min.at 500VDC. DIELECTRIC STRENGTH: 1,000 VAC rms. ELECTRICAL LIFE AT FULL LOAD: 500,000 cycles. OPERATING TEMPERATURE: -30 ° C to 85 ° C. TOTAL TRAVEL: PANEL THICKNESS: OPERATING FORCE: CONTACT BOUNCE: 10 ms. MECHANICAL LIFE: 1