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              菲尼克斯電源單電源和雙電源的轉換

              來源:http://www.cekidots.com/ 日期:2021-05-17 發布人:tongjid

              菲尼克斯電源單電源由于輸入端與輸出端被接在一起,故非門的輸出電壓與輸入電壓相等(Vi=V0),非門被強制工作在轉移特性曲線的中 心點處,因此輸出電壓被限定為]電路的閾值電平,其大小等于電源電壓的一半。

              Because the input and output of single power supply of Phoenix power supply are connected together, the output voltage of not gate is equal to the input voltage (VI = V0), and the not gate is forced to work at the center of the transfer characteristic curve, so the output voltage is limited to the threshold level of the circuit, which is equal to half of the supply voltage.
              如果我們將非門的輸出端作為直流接地端,就可以把電源電壓VCC轉換為土VCC/2的雙電源電壓,此時的非門起到了一個存儲電流的穩壓器的作用,電路的輸出阻抗較低、因而輸出電壓也比較穩定。
              If we take the output end of the not gate as the DC grounding terminal, we can convert the power supply voltage Vcc into the dual power supply voltage of VCC / 2. At this time, the not gate acts as a voltage regulator to store the current. The output impedance of the circuit is low, so the output voltage is relatively stable.
              菲尼克斯端子
              菲尼克斯電源電路中的運放同相輸入端接有對稱的串聯電阻分壓器,而運放本身接為電壓跟隨器的形式:根據運放線性工作的特點不難看出:運放輸出端與分壓點間的電位嚴格相等。
              The in-phase input terminal of the OP AMP in Phoenix power supply circuit is connected with a symmetrical series resistance voltage divider, and the op amp itself is connected with a voltage follower. According to the characteristics of the linear operation of the op amp, it is not difficult to see that the potential between the output terminal of the op amp and the voltage divider is strictly equal.
              由于運放的輸出端作接地處理,因此運放的供電電源VCC就被相應地分隔成了兩組對稱的正、負電源士VCC/2。當運放的輸出電流無法滿足實際需求時,不能象門電路那樣簡單地并聯使用;這時可以將通用型小功率運放換為輸出電流較大的功放類運放器件,其內部一般都設置了對稱的偏置電路結構,這就使其輸出端的直流電位近似為電源電壓的一半。
              Because the output terminal of the op amp is grounded, the power supply VCC of the op amp is correspondingly divided into two groups of symmetrical positive and negative power supply VCC / 2. When the output current of the op amp can not meet the actual demand, it can not be used in parallel as the gate circuit; In this case, the general-purpose Low-Power Operational amplifier can be replaced by the power amplifier type operational amplifier with larger output current. Generally, the symmetrical bias circuit structure is set inside the operational amplifier, which makes the DC potential of its output end approximately half of the supply voltage.


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