Nothing restores strength and nervous system, as a healthy sleep. In our busy time many people suffer from insomnia and have resorted to chemical psychotropic drugs. But it's dangerous. You may experience negative side effects. But modern medicine very successfully uses electronic the device for positively acting on the body and is completely harmless. I patients who have undergone treatment elektrosnom, improves health, lost fatigue, increases vitality.
The electrosleep apparatus are usually of two types. In one case it is a miniature the noise generator, similar in nature to the murmur of the brook or rain. Located behind the ear device muffles noises and soothing effects on the nervous system. The second type is the electronic hosipital in direct the meaning of the word. It affects the body selected current pulses. To usipetes resorted to only on the recommendation of a physician and used under his supervision. Therefore we recommend to make for home the machine first type.
Small attachment allows you to use a tape recorder, radio or TV to go to sleep under the noise of the surf.
Console (Fig. 1) consists of a noise generator (VT1 transistor and a Zener diode VD1), VT2 emitter repeater, cascade with variable gain VT3, VT4 and the generator control voltage VT5, VT6. The source of the noise signal is Zener diode VD1, working in the so-called mode avalanche breakdown at low reverse current. To change the gain cascade on the VT3 transistor in the circuit of emitter the transistor VT4, on base which flows through the resistor R7 and integrated circuit R8, C4 signal with generator control voltage. He is a symmetric the multivibrator transistors VT5, VT6. Periodically changing the resistance between the collector and the emitter of the transistor VT4 causes a corresponding change the gain of the stage on the VT3 transistor. In the end, the noise signal on the output will periodically increase and subside, imitating the sound of the surf.
Fig. 1. Schematic diagram of the apparatus of electrosleep
The duration of the rise and fall of the control voltage can be changed by selection resistors R8, R10, R11 and capacitor C4.
The details of the consoles are mounted on the Board of foil Micarta sizes 70-55 mm. power Source may be any stable source supply voltage 22...25V.
To establish the console as a rule, is not required. She is ready to work immediately after all the connections. And check its functionality by using head phones TONE-2 (or similar) included in the X1 slot. Character the sound of the waves change the selection of the supply voltage, and a bypass nests X1 capacitor C7 with a capacity of 1000 to 3000 pF.
Enjoy your dreams!
Author: V. Tsibulsky