外文翻譯--運算放大器的原理和應(yīng)用-其他專業(yè)-在線瀏覽
2025-03-24 00:37本頁面
【正文】 121 IIF UURR ? Input signal, respectively, added to the RPphase input and input, the specific steps and not in the first two are derived almost And in the end be: From this we can see that it is actually pleted: two of the input differential signal operation. 5 2. And the difference circuit: And poor use of the circuit is a relatively wide range of circuits, where the three circuits on the move: Reverse summation circuit to sum the same circuit, and differential circuits. (1) reverse summation circuit and summation circuit in the same direction: Only difference is that the input signal by adding a reversedphase input with input phase difference, reversesum circuit in Figure 6, with the summation circuit in Figure 7. By Kirchhoff39。s the relationship between input and output voltage is: UO = )(22114433 RURURURUR IIIIF ??? Figure 9 posed of two integrated operational amplifier circuit schematics and poor Its former level after the level does not affect (in the ideal of integrated operational amplifier), which is very convenient calculation. 3. Integral and differential circuit: The above ponents used are basically resistive element, if one side of the resistor capacitor replaced, then the results will bee integral circuits and differential circuits. (1) integral circuit: The circuit shown in figure 10, it can achieve integration and production of puting, such as triangular waveform. Integral operation is: the output voltage and input voltage relations were integral. It is the use of capacitive charge and discharge operations to achieve integration, and its input and output voltage relationship: UO = dtURC I?? 1 One: that the initial capacitor voltage at both ends. If the circuit input voltage waveform is a square, then have a triangular waveform output. 8 (2) differential circuit: Differential circuits and the difference between circuit points just swap the location of resistors and capacitors. Differential is the integral of the inverse operation, its output voltage and input voltage relations showed differential. Circuit diagram shown in Figure 11: its input and output voltage relationship: UO = IUdtdCR? Circuit schematics Figure 10 point Figure 11 Differential circuit schematics 4. And the index calculation on the number of circuits: Circuit used for a number of diodes, diode characteristics of the most important is onedimensional conductivity. In the circuit, the current only flows from the diode cathode, anode flow, it is the realization of the characteristics and indicators of the number of circuits. (1) of the number of operation circuits: UO = riuUsiT ln? Logarithm puting circuit output voltage and input voltage was logarithmic function. RP we use the ratio of Rf diode circuit that is formed instead of the number of operations on the circuit. Circuit diagram shown in Figure 12. He relationship between the output of the input voltage
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