This article shows you how to build a powerful inverter circuit that can turn a 12V battery like a car battery into household electricity 220V. It is easy to build, uses few parts, and is very efficient according to the author. There should be safety regulations regarding using homemade inverters so be sure to check […]
Transistor Circuits
Simple Audio Mixer Circuit using a Single Transistor
This post shows you how to build a simple circuit that mixes two sounds together. This is like a mini DJ mixer, but it only uses one transistor a tiny switch to combine two different sounds into one. This is a great project to learn about how electronics can mix sounds together. Circuit Working: Parts […]
Simple Lie Detector Circuit
Have fun building this lie detector circuit! While it wont be perfect real lie detectors are much more complex, it can be a fun way to learn about how our bodies react to stress. This circuit uses changes in sweat to see if someone telling the truth people sweat more when they are stressed or […]
Simple Echo Effect Generator Circuit
This post shows you how to build a circuit that adds an echo effect to your music! It uses a common part called a transistor BC547 to make your music sound like it is echoing in a big space. What is an Echo Effect Generator Circuit: An electrical circuit called an echo effect generator circuit […]
Simple Universal Signal Generator Circuit
Looking for a cheap way to build a sound generator circuit to test your electronics projects? This post shows you how to make a simple one using transistors, It is perfect for: This circuit is like the expensive ones you can buy, but way cheaper. What is a Universal Signal Generator Circuit: For testing and […]
Simple Logic Probe Circuit using Transistors
This article shows you how to build a cool tool called a voltage tester. It uses two transistors and can tell you if there is power positive voltage at a certain spot in an electronic circuit. It beeps and has a light to show you when it finds power. This is a handy tool for […]