Simple BFO circuit is small electronic circuit which make signal sound when mix with other signal. This circuit help to hear weak radio signal like in old radio or metal detector. It is easy to build and uses one transistor part called a bipolar junction transistor (BJT). What is Beat Frequency Oscillator: BFO are used […]
Noise Limiter Circuit
Did anyone tried to listen a radio but heard too much noise? which was hard to hear, right? This Noise Limiter Circuit tell how to make small circuit which helps remove noise makes radio sound better. Circuit uses transistors like tiny switch to stop bad noise. WARNING: Making electronics are not safe always. Try only […]
Class A Amplifier Circuit
This article talk about Class A amplifier. It is good for small speaker or headphone. Amplifier make sound more loud. This Class A Amplifier Circuit uses near 20 milliamp power so it good for low power thing. We show in this post how to make it using Q1 and Q2 transistor and this transistor work […]
Bass Treble Tone Control Circuit using a Single Transistor
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 […]
Simple Beeper Circuit
This Simple Beeper Circuit show us how to make a easy beeper circuit. When we press push button a sound comes from unbalanced multivibrator circuit. Small speaker makes the sound. This project is good to learn music and electronics and is also fun project for beginners. What is a Beeper Circuit: The beeper circuit is […]
Tester Probe Circuit
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 […]