Make it more fun with one siren circuit that makes many sounds. This small thing work like alarm sound toy which is good as warning. Not just one boring sound it makes many loud noise one after one or same time! It works well to get people to look and listen quickly. No more “beep […]
Audio Circuits
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Simple Audio Compressor Circuit
Think like music have one volume knob. Range that is dynamic? It is how far volume go from very soft to very loud. Compressor do this job it move knob by itself. When sound is too loud it make little lower and when it is too quiet it push it little louder. So all sound […]
Simple Audio Frequency Signal Generator Circuit
Have anyone ever thought that how electronic makes sound? Audio frequency signal generator it like small sound maker. It make electric signal what ear can hear from low boom (20Hz) to very high squeaky (20kHz). This circuit very helpful for many thing: Circuit Working: Parts List: Component Quantity Resistors 1k 1/4 watt 2 820Ω 1/4 […]
Simple Touch Controlled Musical Door Bell Circuit
Forget the boring ding dong bell! This circuit shows how to build a doorbell that plays a little tune instead. Just touch a button and it will ring out a melody tone one can choose for itself. This is a fun way to add some personality to the doorway. Circuit Working: Parts List: Component Quantity […]
Simple Siren Circuit
Building a circuit that sounds like a real siren is made clear in this Simple Siren Circuit article! Similar to the siren of a police car or ambulance the sound rapidly rises and falls in pitch. Although this activity can be enjoyable keep in mind that sirens are also used in emergency situations. Circuit Working: […]
Simple FM Radio Receiver Antenna Booster Circuit
Does anyone favorite radio stations ever have static? Building a signal booster for the radios FM antenna is discussed in this article. Radio signals are sometimes weak because they travel through the atmosphere particularly if someone reside far from the radio station. By strengthening weak signals this circuit helps the radio pick them up with […]