How To Make A Voltage Comparator Circuit

By | June 4, 2023



The voltage comparator circuit is a useful tool for measuring and comparing differences in voltage in various electronic projects. It is often used to compare two input signals and output two outputs that are either “high” or “low” depending on which signal is higher. Knowing how to make a voltage comparator circuit can come in handy when troubleshooting malfunctioning hardware or testing new ideas. This article will explain how to construct your own voltage comparator circuit.

To start, you will need to gather the necessary components. You will need a power source, such as a battery or wall power, some type of voltage regulator, two resistors, a capacitor, two transistors, and a relay. All these components should be available at any electronics store. Once you have gathered all the required supplies, you can begin constructing the voltage comparator circuit.

Start by connecting the power source to the voltage regulator. Next, the two resistors and the capacitor should be linked together in series and connected to the regulator. Connect the two transistors after, with one transistor's collector connected to the other transistor's base. Finally, use the relay to connect the two transistors' emitters. The complete circuit for a voltage comparator should be completed once these connections are made.

After your voltage comparator circuit has been built, you can begin testing it to ensure it is operating correctly. The relay should remain in the “off” state until the voltage supplied to the circuit is greater than the voltage at the other side of the circuit. Once this happens, the relay should then switch to an “on” state. Make sure to test the voltage comparator with different voltages to verify its accuracy.

By following these steps, you should now have a functioning voltage comparator circuit. With this circuit, you can measure and compare voltages in various electronic projects. Be sure to practice safety when dealing with electricity and take all necessary precautions.


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