Ionizer ION-1. Encyclopedia of radio electronics and electrical engineering

Encyclopedia of radio electronics and electrical engineering / Electronics in medicine

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It's nice to taste fresh fruits in the middle of winter - as if they were fresh from a tree or from a garden. How do you keep tender fruits and vegetables from spoiling?

At the exhibition NTTM-81 in Moscow, our attention was attracted by a device called ION-1, created in the club of young technicians "Zarya"; city ​​of Izhevsk: a small box with a rubber hose ending in a Plexiglas tube. The device was designed and built by ninth-grader Sasha Kislukhin and eighth-grader Sasha Akimov under the guidance of engineer Vladimir Vasilyevich Tsymbalov. We were told that fruits treated with ION do not spoil for several months. Let's see how ION-1 works.

It is known that microorganisms cannot live in an atmosphere saturated with ions. This is the ionized atmosphere that the device creates. Its main parts are: a high voltage pulse type generator, a centrifugal pump and an ionization chamber. The generator creates a voltage of about 30 kV. The pump drives air through a chamber in which a spark discharge flashes 100 times per second. This small lightning detaches individual electrons from atoms and molecules, that is, it creates ions. The flow of ionized air is directed to the jar, where the thoroughly washed and dried fruits lie. This is the principle of the ION.

And now more about its electrical circuit.

Tr - transformer with a power of 50-100 watts. A voltage of about 300 V is removed from winding II and, with the help of a full-wave rectifier, it turns into a pulsating unipolar one. Winding III must be relieved of the voltage necessary to power the motor that rotates the impeller of the air pump. (If it is possible to find a low-power motor with a rated voltage of 220 V for the air pump, then the need for winding III will disappear and the circuit will be greatly simplified.) The DPM-30 engine was used in the design of the Izhevsk guys.

A pulsating unipolar voltage is supplied to the plates of a non-polar 4-microfarad storage capacitor. At the same time, the voltage at the control electrode of the discharge thyristor KU202N increases. The thyristor can be used without a heatsink. The circuits are designed so that the thyristor opens at the moment when a voltage of about 250 V accumulates on the capacitor. When the capacitor is quickly discharged through the thyristor and the primary winding of the automobile ignition coil (it can be B-115 or any other 12 V ignition coil), a high-voltage pulse is generated . The coil can be purchased at an auto parts store. The ignition coil housing must be connected to a common wire - "ground" ;. High voltage is connected to the spark gap of the ionization chamber. A 2k potentiometer achieves even burning of a high-voltage spark.

The ionization chamber is best made from Plexiglas. It is connected to the air pump with a rubber hose. Make electrodes from a wire with a diameter of 1 mm and press it into the walls of the chamber with a soldering iron. The length of the spark gaps should be about 10 mm.

Attention! There is high voltage inside the device! The housing of the ION must be made of insulating material. It is strictly forbidden to open the case of the device or disassemble it without disconnecting it from the mains.

So, ION is ready. Blow freshly picked fruits and vegetables with ionized air for 15-20 minutes. Now you can hermetically seal the jar - and before winter!

Author: M.Lukic

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