This project makes sound in a whole new way. It is quite easy to build and only uses a few parts: A transistor like a tiny switch A special coil like a mini electromagnet A tiny speaker component piezo transducer that turns electricity into vibrations The result is a high pitched sound kind of like […]
Simple Li-Fi Transmitter Receiver Circuit
Think of the internet as light instead of radio waves. Exactly that is what Li-Fi technology achieves. Building a simple Li-Fi system to transmit and receive data using light is explained in this article. A bright LED and a standard transistor are used by the transmitter to convey the signal. The receiver picks up the […]
Simple Sound Activated Relay Circuit
This article explains how to create a circuit that uses sound to switch a device ON and OFF. Relays are specially designed parts that regulate power hungry devices like lights and motors. The following are some ways that these can be useful: This article will teach how to construct and run this kind of circuit. […]
Simple Transistor Relay Driver Circuit
Small switches called transistors are found in almost every electronic device. However they are unable to manage an abundance of power alone. A transistor relay driver is similar to a specialized transistor adapter. It enables the control of a strong relay switch by a tiny transistor signal. This makes it possible to turn ON and […]
Simple LED Chaser Circuit using IC 4017
This project creates a chase effect by causing a sequence of LEDs to light up one after another. Learning about electronics in this way is enjoyable. The special IC 555 chip generates a constant pulse. This signal directs another chip IC 4017 to switch ON and OFF its outputs in a specific manner. The second […]
Simple Temperature Indicator Circuit using a Single Transistor
To build a simple temperature sensor circuit is not as difficult as one may think. The article explains everyone how to design this type of easy circuit by using a diode, a single transistor and a few other simple parts. What is a Temperature Indicator Circuit using a Single Transistor: Using a single transistor a […]