While using amplifiers, we sometimes experience this very annoying thump sound, popping up in loudspeakers whenever the amplifier is switched ON or OFF. This normally happens with amplifiers that are of low quality or lack the feature of a thump eliminator circuit built-in in the amplifier. The thump sound in loudspeakers can be not only […]
Sound
Sound Activated LED Lamp Circuit
A highly sensitive sound activated LED lamp circuit can be built using just a few transistors and resistors. The circuit is actually a high gain MIC amplifier circuit which amplifies the external sound hitting the MIC. The amplified signal is then used to momentarily illuminate a bunch of LEDs. What does the Circuit do? Basically, […]
Simple Bird Sound Generator Circuit
The diagram presented below shows a simple circuit of a bird chirping sound generator. All the parts are very common and the transformer is an ordinary type as found in small transistor radios at the output stage Circuit Operation The circuit is basically a feedback oscillator circuit that is configured around a small output transformer. The transistor forms the […]
Electronic Cricket Sound Generator Circuit
In this post I have explained how to build a simple cricket chirping sound generator circuit using a single IC 4093 and a few other passive components. An electronic cricket sound generator is a device which generates a sound exactly similar to a real cricket insect. This is done using a set of oscillators configured […]
Piano, Guitar Sound Effect Generator Circuit
Music is a part of our lives, accompanying and enhancing our everyday experiences. While it is easy in electronics to generate a single note, for example, using a simple astable oscillator, one can only dream of the myriad of sounds available on even the most ordinary synthesizers, versatile and almost indispensable instruments today. A musical […]
Sound Activated Remote Control Circuit
This sound activated remote control circuit can be used to operate any electrical load ON/OFF, through a double sound command. Thus, the circuit ensures that the load cannot be operated through any random single sound triggers, which makes the circuit very fool proof. Our device will require two shifted sound commands. However, the second sound […]