The technology of cell phone jammer should be updated

Individual phone using a combination of resistance, such as the Nokia 8210 mobile phone The R805, R120 uses a combination of resistance, a total of four pins and connected to the external circuit, the internal circuit is shown in Figure 2-1. On the phone, the capacitance is generally yellow or light blue, the individual power to lift the capacitor is also used red, electrolytic capacitor is slightly larger, non-polarized capacitor is small, the youngest only 1mmx2mm, some capacitance between in which mark the two characters, Most of the capacitor is not shown its capacity. Electrolytic capacitors in mobile phones, in one end of a narrow dark, indicating the end of its positive. The mark of capacitance, the first general character of the letters of the alphabet, representing a valid number, the second character is a number. The log of the centralized management of cell phone jammer is the very important information.
On behalf of the 10 index, a unit of capacitance is pF specific meaning shown in Table 2-1. Example, a capacitor labeled G3, look-up table, to identify G = 1.8,3 = 103, then the nominal value for this capacitor is 1.8x103 = 1800pF. A sign of its shell polarity is unclear, the electrolytic capacitor can be used the following method to discriminate: multimeter R × 10K block, two separate swap measuring the resistance value of the capacitor at both ends, when the hands of stable, compare two measurement the size of the reading value of the larger reading, when the multimeter black pen connected to the positive terminal of the capacitor, the red pen then the negative terminal of the capacitor, the principle of first use of the multimeter internal battery power supply. The design adopted by  cell phone jammer  develops rapidly.
The second is to use a reverse leakage current of the electrolytic capacitor is larger than the forward leakage current characteristics. The inductance is a reactance devices, it is also often used in electronic circuits. A wire around the core or core or a hollow coil is an inductor. Phone circuits, a special printing copper constitutes an inductor, under certain conditions, also known as the microstrip line. The main physical characteristics of the inductor is to convert electrical energy into magnetic energy and stored, can also say that it is a stored magnetic energy components. Inductance is to use the principle of electromagnetic induction to work. When current flows through a one wire, it will generate the electromagnetic field around the wires, this electromagnetic field will have the wire in this electromagnetic field within the scope of the phenomenon of electromagnetic induction. The technology of  cell phone jammer  should be updated.
Phone board resistors, capacitors, -, the appearance of the phone circuit inductance variety of shapes, some inductance is very easy to judge from the appearance; but some appearance of the shape of the inductor and resistor. The appearance of the capacitor less, difficult to judge. Use multimeter ohms file can check the inductance open. More common in the mobile phone circuit inductance the following: a both ends of the silver-white, the middle is white; another at both ends of the silver-white, the middle is blue. There is a power supply circuit inductance volume is relatively large, generally round or square, black, easily recognizable. The quality of  cell phone jammers can be improved.