This configuration is similar to the above circuit, the only difference being the output response, which is always equal to the polarity of the fed input voltage. VR1 may be used for adjusting the gain of the amplifier. As the name informs a DC input to the IC will be amplified at its output but will be just the opposite with polarity. Sometimes it becomes important for amplifying DC voltages, the diagram above shows how the IC can be wired up into an inverting DC amplifier circuit. Let’s study some of the important 741 opamp applications circuits, as explained below: 1) Inverting DC Amplifier: IC 741 is one of the most versatile and multipurpose op-amp and can be wired up in numerous different ways. We investigate a few of these projects here. Amazingly an infinite number of 741 opamp circuit design ideas can be wired by adding just a few passive components to it. We all are probably aware regarding the high versatility of the IC 741. Proximity Sensor that does not Depend on Mains 50 Hz Hum. 7) Power Amplifier Circuit using IC 741.6) Stabilized Power Supply Circuit Using opamp IC 741.
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