With the help of electronic circuits todayimplement the most daring ideas. A novice radio amateur can even assemble such an “exotic” device as a noise generator. This device is produced on an industrial scale and is designed to protect against information leakage from working electronic devices: computers, mobile phones, etc. They are often called “jammers” because of the ability to suppress any information signal that falls within the scope of their action.
Применение устройства целесообразно в офисах или laboratories, in general, wherever a special secrecy regime should be maintained. If in any organization there is a ban on the use of mobile communication, the noise generator is able to block any signal and prevent negotiations. In addition, you can create a device that will generate the so-called “white noise”. This is a noise of the sound range, which can prevent information leakage during meetings or particularly important negotiations. The room at the same time “is shrouded in white noise”.
In addition to the above examples, the noise generatorcan be used for other purposes. Probably, many people remember the “Sea Battle” gaming machine, in which it was necessary to destroy a ship with a torpedo. When hitting the target, a noise generator was switched on, which worked in the sound range and simulated the sound of an explosion.
Such a device is easy to construct ifknow the principle of its action. A device operating in the audio range generates audio signals of equal amplitude. A feature of the device is that the output simultaneously contains a mixed signal. It can be generated, suppose, on a microprocessor, precisely dividing the sound range and mixing signals with a certain discreteness. But it is much easier to use electronic devices as a source of white noise: radio tubes or a zener diode. Such devices are easy to find in specialized stores. The noise generator at the Zener diode consists of a parametric stabilizer. The signal is taken directly from the Zener diode and is transmitted to the operational amplifier with a certain cutoff frequency. The white noise thus allocated remains to be amplified with the help of an AFF and to be transmitted to the speaker. The device works steadily in a wide range.
temperature and begins to generate a signal of mixed frequency immediately after installation and connection to a power source. It's quite interesting to hear how the zener diode works.
Finished devices can also be purchased atstores. As an example, consider the noise generator GSH-1000M. The device is compact, and its radius of action is 40 square meters. It reliably protects the organization from possible information leakage from working computers. It is also possible to use several such devices, for example, to protect powerful computer centers or terminals. In this case, the devices can be located at a distance of 20 m from each other. The radiation generated by the generator does not exceed the permissible norms and does not harm the health of the staff.
