This article teaches how to construct a simple battery free tester for checking whether a radio transmitter is functional. The transmitters radio waves provide electricity to the tester which flashes an LED to indicate if it is working. What is a RF Sensor without Battery: An RF sensor without a battery is a wireless sensor […]
Simple Induction Heater Circuit
This article explains how to construct a circuit that heats iron items using magnetism. We call this induction heating. WARNING: Creating circuits with high currents and voltages can prove harmful. Do this only under adult supervision and using the right safety equipment. For beginners this project is not advised. What is a Induction Heater Circuit: […]
Simple Echo Effect Generator Circuit
How to build a circuit that produces an echo effect in music is explained in this post! Because they provide a feeling that music echoes across a vast area so transistors such as the BC547 are used. What is an Echo Effect Generator Circuit: To create an audible echo effect in audio signals an electrical […]
Simple Universal Signal Generator Circuit
Looking for a cheap way to build a sound generator circuit to test ones electronics projects? This post shows how to make a simple one using transistors which is perfect for: One can design this circuit at a much lower price. What is a Universal Signal Generator Circuit: A helpful electronic test tool for testing […]
Simple Logic Probe Circuit using Transistors
The construction of a useful instrument known as a voltage tester is explained in this article. It can detect whether there is a positive voltage at a specific point in an electronic circuit by using two transistors. When it detects electricity it beeps and illuminates with indication sign. Anyone interested in learning about electronics will […]
Simple 9V to 300V Converter Circuit using a Single Transistor
This creative design converts a regular batteries low 9V DC output into a powerful 300V DC supply. What is a 9V to 300V Converter: An electrical circuit known as a 9V to 300V converter is made to change a 9V low voltage input into a 300V high output voltage. Under the broader category of DC-to-DC […]