德國施克@施克光電開關
SICK傳感器是采用光電元件作為檢測元件的傳感器。它首先把被測量的變化轉換成光信號的變化,然后借助光電元件進一步將光信號轉換成電信號。光電傳感器一般由光源、光學通路和光電元件三部分組成。由光通量對光電元件的作用原理不同所制成的光學測控系統是多種多樣的,按光電元件(光學測控系統)輸出量性質可分二類,即模擬式光電傳感器和脈沖(開關)式光電傳感器.模擬式光電傳感器是將被測量轉換 光電傳感器成連續變化的光電流,它與被測量間呈單值關系.模擬式光電傳感器按被測量(檢測目標物體)方法可分為透射(吸收)式,漫反射式,遮光式(光束阻檔)三大類.所謂透射式是指被測物體放在光路中,恒光源發出的光能量穿過被測物,部份被吸收后,透射光投射到光電元件上;所謂漫反射式是指恒光源發出的光投射到被測物上,再從被測物體表面反射后投射到光電元件上;所謂遮光式是指當光源發出的光通量經被測物光遮其中一部份,使投射剄光電元件上的光通量改變,改變的程度與被測物體在光路位置有關. 光敏二極管是zui常見的光傳感器。光敏二極管的外型與一般二極管一樣,只是它的管殼上開有一個嵌著玻璃的窗口,以便于光線射入,為增加受光面積,PN結的面積做得較大,光敏二極管工作在反向偏置的工作狀態下,并與負載電阻相串聯,當無光照時,它與普通二極管一樣,反向電流很小(<µA),稱為光敏二極管的暗電流;當有光照時,載流子被激發,產生電子-空穴,稱為光電 光電傳感器載流子。
德國施克@施克光電開關
優惠型號:C20E-075304A31, C20S-075204A11 1042148, 1016640 C20E-075303A31, C20S-075203A11 1041573, 1016583 C20E-075302A31, C20S-075202A11 1042141, 1016634 C20E-075304A31, C20S-075104A11 1042148, 1016581 C20E-075303A31, C20S-075103A11 1041573, 1016479 C20E-075302A31, C20S-075102A11 1042141, 1016579 C20E-075303D41, C20S-075103D41 1041586, 1041585 C20E-075304A21, C20S-075204A21 1018100, 1018103 C20E-075303A21, C20S-075203A21 1018098, 1018102 C20E-075302A21, C20S-075202A21 1018096, 1018101 C20E-075304A21, C20S-075104A21 1018100, 1018099 C20E-075303A21, C20S-075103A21 1018098, 1018097 C20E-075302A21, C20S-075102A21 1018096, 1018095 C20E-075304A21, C20S-075204A11 1018100, 1016640 C20E-075303A21, C20S-075203A11 1018098, 1016583 C20E-075302A21, C20S-075202A11 1018096, 1016634 C20E-075304A21, C20S-075104A11 1018100, 1016581 C20E-075303A21, C20S-075103A11 1018098, 1016479 C20E-075302A21, C20S-075102A11 1018096, 1016579 C20E-075304A11, C20S-075204A11 1016582, 1016640 C20E-075303A11, C20S-075203A11 1016480, 1016583 C20E-075302A11, C20S-075202A11 1016580, 1016634 C20E-075304A11, C20S-075104A11 1016582, 1016581 C20E-075303A11, C20S-075103A11 1016480, 1016479 C20E-075302A11, C20S-075102A11 1016580, 1016579
德國施克@施克光電開關