Cell phone jammer is an electronic device that blocks the transmission of signals between the cell phone and its nearby base station. By using the same frequency as the cell phones, the cell phone jammer creates strong interference to the communication between the caller and the receiver. It is efficient in blocking the transmission of signals fro
Click here to download the full size of the above Circuit.
m the phone networks, including UMTS, 3G, CDMA, GSM and PHS. In the past i worked on this circuit, the range is not above 4-5 meters & power consumption is more for battery applications. if you are looking for good range use 1/4 monopole antenna with 50ohm impedence, it would increase further 5meters. First of all I wan`t to ask can I use bft66 instead of mrf947t1 & secondly does a mobile phone uses a single gsm frequency at a time cuz this circuit generates only constant frequency. Would it should be enough to jam a single service at a time thanx all my project now changed to GSM JAMMER, due SPECTROMETRE COST, . am happy about the circult of the jammer i saw but willin to known better about it tanx all. GSM JAMMER DETAILS PLS ALL A teacher, or the prison, more and more ares are considering the legal use of phone jammers, it has been a necessity of our daily life, I have got one from jammerfromchina for my family. so if you want to get one, you can go and visit it for more details. share with you! Here is the simple and best circuit diagram for mobile jammer. For complete information about this circuit diagram and its working, read the post: Simple Mobile Jammer Circuit The activity of the animal beings has become acutely active everywhere on this earth. Bodies do not get time to booty a blow for a while. With the accretion use of altered gadgets of Gps Jammer, the possibilities of accepting the aboriginal of blow accept...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: