Simple Mobile Phone Signal Jammer Circuit is device that stop signal between phone and tower, it does this by using same radio frequency like phone and to make communication not to work. Also, this small circuit can block call and message on 3G, 4G and also old network. Here, three main part inside jammer are: […]
FM Radio Circuit
FM Radio Circuit is an electric brain for the machine and it is also a small electric system which catches FM radio waves and changes to sound we can hear. This circuit also uses components such as an antenna, microphone, speaker and connecting wires, which are commonly used in many radios to receive music or […]
Voice Recorder and Playback Circuit
Does anyone get tired of buying expensive voice recorders? then this Voice Recorder and Playback Circuit show how to make easy one at home! Also, we can use it to record small message for family or friend, by just pressing two button one for record and other one to listen. Note: This project is little […]
Very Low Frequency (VLF) Converter Circuit
To begin with , this Very Low Frequency (VLF) Converter Circuit talks about one circuit, which can catch very low radio waves VLF from air and make them into sound for hearing. Also, normal radios do not get these VLF waves but they only work with higher waves; and hence, this circuit is different it […]
Digital Volume Controller Circuit
This Digital Volume Controller Circuit talks about special type of electronic volume control, which does not uses normal knob but it uses an electronic parts. Also, normal volume knob uses resistor but this one uses small computer chip to control sound level; as it gives more function and also with more correctly. Circuit Working: Parts […]
Variable Notch Filter Circuit
This Variable Notch Filter Circuit have a special filter, which can change to remove some sound frequency. Also, we can adjust it how we need and that make it useful; as this filter is also call band reject filter or band stop filter. Furthermore, it mostly removes or make small certain noise in one range, […]