The Future is Here

  What is Cellular Jammer? How does it work? A mobile phone jammer or blocker is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting them. Jammers can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected, such as entertainment venues. It might be hard to follow this process without first understanding cell phone signals. Cell phones work by sending signals to cell phone towers. The cell tower that receives the signal depends on the cell phone’s location. Cell towers divide their workload by honing in on specific areas. So when you travel with your cell phone, your cell phone sends signals to different towers.  The jamming device work...

  ​​How does a Cellphone Vibrate? Among the many components inside the phone is a small motor. The motor is built in such a way that it is partially off-balanced. In other words, a mass of improper weight distribution is attached to the motor's shaft/axis . So when the motor rotates, the irregular weight causes the phone to vibrate. Rotating unbalance is the uneven distribution of mass around an axis of rotation. A rotating mass, or rotor, is said to be out of balance when its center of mass (inertia axis) is out of alignment with the center of rotation (geometric axis). Unbalance causes a moment which gives the rotor a wobbling movement characteristic of vibration of rotating structures. There are two basic types of vibration motor: An eccentric rotating mass vibration motor (ERM) uses a small unbalanced mass on a DC motor , when it rotates it creates a force that translates to vibrations.   A linear resonant actuator (LRA) contains a small internal mass attached to ...