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Transistor Circuits

Audio Mixer Circuit using a Single Transistor

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

Audio Mixer Circuit using a Single Transistor is an small and easy circuit which mixes three sounds. It uses only one transistor which can mix two or three sounds into one. It is good for beginners who want to learn about sound and electronics Circuit Working: Parts List: Category Description Quantity Resistors 2.2k CFR 1 […]

Filed Under: Audio Circuits, Transistor Circuits

Simple Lie Detector Circuit using Transistors

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

Have fun making this Simple Lie Detector Circuit using Transistors. Real lie detectors are very hard and complicated so this one is not perfect. But it is fun way to see how body react when stress. This circuit works by checking sweat changes to know if someone tell truth or lie. When people are scared […]

Filed Under: Sensors and Detectors, Transistor Circuits

Simple Logic Probe Circuit using Transistors

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This article for Simple Logic Probe Circuit using Transistors tell how to make one useful tool called voltage tester. It uses two transistors for checking if some place in circuit have positive voltage. When it find electricity it makes beep sound and small light turns ON. People who want to learn electronics, this tool will […]

Filed Under: Meters and Testers, Transistor Circuits

9V to 300V Converter Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This smart design for 9V to 300V Converter Circuit changes a small 9V battery power into big 300V power. It uses only one transistor and is very simple and easy for one to try. This circuit is good for learning and for small projects. What is a 9V to 300V Converter: A circuit called as […]

Filed Under: Inverter Circuits, Transistor Circuits

Bass Treble Tone Control Circuit using a Single Transistor

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This Bass Treble Tone Control Circuit using a Single Transistor BC547. It is an easy tone control circuit. We can turn bass up or down and treble also in audio sound. What is Bass Treble Tone Control Circuit: This Bass Treble Tone Control Circuit make treble go high by cutting sound below 500 Hz. When […]

Filed Under: Audio Circuits, Transistor Circuits

Tester Probe Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

Many people think multimeter can test any electric part. But this not always safe especially for semiconductor. This article for Tester Probe Circuit show how to make one easy and safe tester only for semiconductor. This tester is easy to build and uses small current which is good to test many type of semiconductor. What […]

Filed Under: Meters and Testers, Transistor Circuits

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