Mini Project Using Ic 741 Pdf Download
Ophelia Quarry
The circuit diagram of the sound detector circuit using op-amp 741 is shown in figure 1. The heart of the circuit is op-amp 741 which is used in order to sense the vibrations of sound waves condenser microphones. The sensitivity of the condenser microphone is adjusted by the value of resistor R1 used in the circuit. Once the microphone detects sound vibrations, it picks them up and converts them into electrical signals. The output of the microphone is fed as input to pin 2 of IC1 via coupling capacitor C1. Then the signal undergoes amplification and it is forwarded to IC2(IC 741C) which in this project serves as a comparator device.
The fascinating fact about the project sound detector circuit using op-amp 741 is that it can be designed within a small area on a PCB or Veroboard as well. To attain maximum possible gain of IC1 and sensitivity of IC2, adjust the respective values of potentiometer VR1 and VR2 as stated in the earlier paragraphs.
The PCB diagram is designed using Proteus 8.1. The solder side PCB and Component side PCB is shown in figure 2 and 3 where the PCB prototype is shown in figure 4. Download the PCB PDF file from the link given below. The picture shown here is scaled in 200%, for the exact size of PCB download the PDF file from the link.
Here we have presented a list of various mini electronics project circuits that are used to solve 100 daily life problems. The simple 741 op-amp circuit design ideas presented here are not only interesting but also very amusing to build.
Simple Electronics projects with basic electronics components like resistor, capacitor, transistor, 555 IC, etc. Each mini-project explained with the circuit diagram, working principle, and other required details.
In a previous instructable ( -meter-with-arduino-and-555-timer/), I presented a similar project of a Capacitance meter using the Arduino One and the 555 timer. That project had an excellent performance, measuring with great accuracy capacitors in the range of 1 nanoF to hundreds of microF.
I also tried using a NE555 timer as a square wave generator - the output frequency being dependent on the value of the timing capacitor - working back from the frequency actually generated I could calculate the timer capacitor value - this worked fine but was not nearly as accurate at the project above
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