Engineers have had to use many different types of op amps in their designs. Some designs require high voltage, some require very low noise, some need high stability, others need low power consumption, and on and on. Choosing Operational amplifier…
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NiMH batteries are used everywhere. These batteries are safe, versatile and easy to charge. In this article we will look into a DIY NiMH battery charger circuit- its working and calculations to choose the right components. This is a basic…
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Cooking can be grueling experience if kitchen is not ventilated properly. Despite good ventilation sometimes we need an exhaust fan to moderate the temperature in kitchen while cooking. But when we are so busy cooking, we often forget the fan…
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Over the years I have designed and built many different types of Intercoms. I have a patent on a unit that uses piezoelectric discs as speakers for a door mountable intercom. The intercoms always required the user to operate a…
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Equalization is a technique that is widely used in studios for sound productions and recording. Using Audio Equalizer we can control different frequency bands from an audio spectrum using linear filters. Simply put using equalizer you can adjust which frequency…
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IR proximity sensor is generally used to detect an object or any obstacles within a range or proximity without any physical contact. It plays a huge role in home security applications such as burglar alarm, automated lights and so on….
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Accelerometers are sensor that is used to measure acceleration of itself or the object where the sensor is fixed to. It is capable of measuring acceleration occurring due to external forces applied and also gravity. This Acceleration sensing alarm circuit…
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