Oscillator circuits are the ones which produces certain waveform with specified frequency. These kind of circuits come in handy when there is a need of signal source for any specified application. Here i have built a primitive Wien bridge oscillator…
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Square waves are extensively used in many digital circuits. Many combinational logic circuits require this wave to operate. Here are few methods you can generate simple square wave using NAND, Inverter and Schmitt Trigger gates. These kind of square wave…
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Bicycle turn indicator lights are something that helps us to have a safe ride. But not every bicycles are equipped with these lights. In that case its our responsibility to make one to ensure safety. So here is how you…
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Battery charge indicator circuits are very useful modules for efficient use of the Li batteries. These kind of indicators generally measures the voltage in the battery and indicate the charge by turning up any appropriate LED’s. But its not necessary…
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Spy Bug circuits are something that’s used when we need to listen to conversation without being noticed or to simply put to spy on a person. Generally Spy bug circuits are constructed using a Mic, amplifier and speaker. The medium…
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Alarms are pretty handy to use in alerts, detectors, sensors etc. In such applications the loudness of the alarm can be a challenge since some most circuit you find online won’t produce audible sound. So to overcome this defect here…
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Power Supply circuits can be extremely useful when you are working on a project which requires multiple range of input voltages. Building a dedicated power supply units for each of those can be painful and tedious process. Instead you can…
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