Sleeping-Aids

Description: The circuit generates geomagnetic fields that allow for their perception, creating an ideal environment for sound sleep. When SW2 is open (Alternate mode operation), the device operates for a pre-set duration and then pauses for the same amount of time, repeating this cycle indefinitely. IC2C and IC2D generate two square waves at approximately 1.2 Hz and 5 Hz, respectively. These waveforms are converted into 60 µs pulses at the same frequencies using capacitors C5 and C6, which are mixed at the base of transistor Q1. This transistor drives the radiator coil with a series of scalar pulses, each 60 µs in length and 9V in amplitude. IC1, IC2A, and IC2B form the timer section of the circuit. Capacitor C1 and resistor R2 provide an auto-reset function for IC1 upon switch-on. The internal oscillator of IC1 controls a 14-stage ripple counter, and after approximately 15 minutes, output pin 1 goes high, causing pin 3 of IC2A to go low and stopping the oscillation of IC2C and IC2D. In Stop mode operation (when SW2 is closed), the first time output pin 1 of IC1 goes high, the internal oscillator of IC1 is disabled via diode D1, keeping the circuit off until a reset pulse is applied to pin 12 through potentiometer P1 or when the entire device is switched off and restarted. The inductor L1 is created by winding 600 turns of 0.2 mm enameled wire around a 6 mm diameter, 40 mm long steel bolt, secured with insulating tape.

The circuit design focuses on generating specific frequencies that mimic natural geomagnetic fields, which are believed to promote relaxation and improve sleep quality. The dual frequency generation, achieved through the use of IC2C and IC2D, allows for the modulation of the magnetic field, simulating the natural variations found in geomagnetic environments. The square wave outputs are crucial for maintaining the intended pulse duration, which is finely tuned to 60 µs to ensure effective interaction with the human brain.

The timer section, composed of IC1, IC2A, and IC2B, is essential for controlling the operational cycles of the device. The auto-reset feature provided by C1 and R2 ensures that the circuit can be reliably restarted each time it is powered on, maintaining consistent performance. The use of a 14-stage ripple counter allows for precise timing control, facilitating the transition between active and pause states of the circuit.

The implementation of the Stop mode via SW2 provides flexibility in operation, allowing users to halt the device when desired. The disabling of the internal oscillator through D1 upon the first high signal from pin 1 of IC1 ensures that the device does not inadvertently reactivate without user intervention, adding a layer of safety and control.

The construction of inductor L1 is critical, as the specific winding technique and choice of materials directly impact the performance of the radiator coil. The choice of a steel bolt as a core material enhances the magnetic field generation, while the specified number of turns optimizes the inductance for the desired output characteristics. Proper insulation of the winding is necessary to prevent short circuits and ensure the longevity of the component. Overall, this circuit exemplifies a thoughtful integration of various electronic components to achieve a specific therapeutic effect.The circuit generates this type of Geo-magnetic-fields and lets us perceive them: in this manner our brain is surrounded by an ideal environment for a sound sleep. With SW2 opened (Alternate mode operation) the device operates for the pre-set time, then pauses for the same amount of time: this cycle repeats indefinitely.

IC2C and IC2D generate two square waves at about 1. 2 and 5 Hz respectively. These wave-forms are converted into 60 µS pulses at the same frequencies by means of C5 & C6 and mixed at Q1`s Base. This transistor drives the Radiator coil with a scalar series of pulses of 60 µS length and 9V amplitude.

IC1, IC2A & IC2B form the timer section. C1 & R2 provide auto-reset of IC1 at switch-on. The internal oscillator of IC1 drives the 14 stage ripple counter and, after about 15 minutes, output pin 1 goes high. Pin 3 of IC2A goes low and stops IC2C & IC2D oscillation. If SW2 is closed (Stop mode operation), the first time output pin 1 of IC1 goes high, the internal oscillator of the IC is disabled by means of D1.

Therefore the circuit remains off until a reset pulse is applied to pin 12 by means of P1 or when the whole device is switched-off and then restarted. L1 is obtained by winding randomly 600 turns of 0. 2 mm. enameled wire on a 6 mm. diameter, 40 mm. long, steel bolt. Secure the winding with insulating tape.