A.被測(cè)電壓經(jīng)過(guò)t1時(shí)間積分,正比于積分器輸出電壓UA。積分器輸出電壓UA經(jīng)過(guò)t2時(shí)間反向積分,UA正比于積分時(shí)間t1,N正比于t1實(shí)現(xiàn)A/D轉(zhuǎn)換
B.被測(cè)電壓經(jīng)過(guò)t1時(shí)間積分,正比于積分器輸出電壓UA。積分器輸出電壓UA經(jīng)過(guò)t2時(shí)間反向積分,UA正比于積分時(shí)間t2,N正比于t2實(shí)現(xiàn)A/D轉(zhuǎn)換
C.被測(cè)電壓經(jīng)過(guò)t1時(shí)間積分,t1正比于積分器輸出電壓UA。積分器輸出電壓UA經(jīng)過(guò)t2時(shí)間反向積分,UA正比于積分時(shí)間t2,N正比于t2實(shí)現(xiàn)A/D轉(zhuǎn)換。
D.被測(cè)電壓經(jīng)過(guò)t1時(shí)間積分,t1正比于積分器輸出電壓UA。積分器輸出電壓UA經(jīng)過(guò)t2時(shí)間反向積分,t1正比于積分時(shí)間t2,N正比于t2實(shí)現(xiàn)A/D轉(zhuǎn)換