Metal detector circuit using inductive proximity sensor
Metal detectors are used to unearth or spot metal objects from various surfaces. Popularly these type of circuit uses Inductors and its inductive property to sense metal detection. However in this...
View ArticleOvervoltage protection circuit
Power supplies are critical for most of the products/gadgets. If we didn’t consider the power supply part while designing our circuit, it can sometimes lead to catastrophic failure and we don’t want...
View ArticleDoor open alarm using IC 555
Most of us are held up with our busy life, be it at office or at home. Often due to our workload and carelessness we tend to forget to close the doors in our office or at home. This habit...Read more...
View ArticleLoud Air horn circuit using schmitt trigger
Air horns are quite popular and been around for a long time now. Due to its nature of creating loud noise this is used in trucks, engines, vehicles and other locomotives to warn other vehicles and...
View Article2 bit ALU circuit diagram
Arithmetic and Logic unit popularly known as ALU’s are essential part of digital systems and devices. Since it is a basic building block for digital systems we all must have built one in our...
View ArticleUSB to 12V & 9V buck boost converter circuit
Voltage boost converters are used where we need to increase the incoming voltage from a given voltage source. USB power source has become very popular these days. The 5V output from USB power supply...
View ArticleVibration meter circuit using LED driver IC LM3915
Vibration detectors aka vibration meters are devices that is capable of detecting vibrations and display the intensity of vibrations to the user. These vibration meters are commonly used to measure...
View ArticleSingle transistor FM Transmitter circuit
Single transistor FM transmitter circuits are quite famous since it is easy to build and cost less. These transmitter circuits may not provide long range like circuits that use dedicated FM chips but...
View Article9v NiMH battery charger circuit
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...
View ArticleStereo power amplifier circuit using LA4440
Stereo amplifiers refers to the type of amplifiers that has two output and input channels. The weak input signal fed into two channels will be amplified and power will be boosted in the output...
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