SU1757499A1 - Stimulator of germinating power of seeds - Google Patents

Abstract

Use: the stimulator is intended for pre-sowing treatment of seeds, which allows to significantly increase the percentage of their germination. SUMMARY OF THE INVENTION: The stimulator operates at audio frequencies and contains a power source, two transistors, a capacitor bank, an inductor connected in series with it, which form an oscillating circuit, a transistor control unit, and a trigger circuit. A distinctive feature of the stimulator is the inclusion of a resonant circuit, i.e. a block of capacitors and an inductor, into the primary circuit of the introduction of a current transformer into the transistor control circuits. As a result, the stimulator circuit is greatly simplified, its weight and dimensions are reduced, and the tuning of the stimulator is simplified. 1 il.

Description

The invention relates to the field of electrification of agriculture, namely to the use of a variable electromagnetic field for presowing treatment of seeds.

Seed processing devices are known to increase their sowing qualities, such as germination, germination energy, etc.

The plant for microwave seed processing contains a microwave generator with a magnetron and a working chamber, a power source, a protection device, a band-pass filter, a relay with closing contacts installed in the power supply circuit of the microwave generator, while the output of the band-pass filter is connected to an amplifier, the output of which the coil of the relay coil is connected.

The known methods and their resulting devices have a number of drawbacks, namely, the insufficiently stable effect, the relatively high complexity and cost of the device due to the expensive magnetron, the harmful and dangerous effects of the microwave floor on the service personnel and the need for them to use special protective equipment.

The most stable effect with the relative simplicity of the implementing device and safe operation is achieved by using the energy of the electromagnetic sound frequency field (10-20 kHz).

A seed germination stimulator is known that contains a power source, two transistors, the power electrodes of which have a common point, a transistor control unit including a highly stable quartz generator, an amplifier, power, a series resonant circuit connected to the secondary winding of a power transformer and a number of auxiliary blocks The resonant circuit includes an inductor and a block of capacitors.

The disadvantages of the known stimulator are its complexity, high material consumption, weight, dimensions and cost, which

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caused by the use of complex electronic circuitry. In addition, in order to obtain a sufficiently high inductance magnetic field, careful tuning into resonance of an oscillating circuit consisting of a block of capacitors and an inductor is necessary.

The purpose of the invention is to eliminate these drawbacks, namely, the design of the stabilizer for its use, as well as the reduction of material intensity.

To achieve this goal, a seed stimulator contains a power source, two transistors, the power electrodes of which have a common point, a transistor control unit connected to their basic circuits and a series resonant circuit including a capacitor unit and an inductor connected to it the start is connected to a power source, the first of the outputs of the start node is connected to the base, and the second to the collector of one of the transistors with which the emitter of the other transistor is connected, and the control node The transistors are designed as a current transformer, the corresponding secondary windings of which are connected to emitter junctions — the base of the respective transistors, and the primary winding of the current transformer is connected in series with the resonant circuit between the inductor and the common point of the power transistors, the second power electrodes of which are connected to the power supply terminals.

The scheme of the proposed stimulator is attached to the drawing.

The device contains a power source 1, one of the inputs of which is connected in series with a block of capacitors 2 and an inductor 3, forming a series oscillatory circuit. The current transformer 4 has a primary winding 5 and two secondary 6 and 7. The primary winding 5 is connected between the second end of inductor 3 and the common point of the power electrodes of transistors 8 and 9, the second power electrodes of which are connected to the power source 1. The secondary windings 6 and 7 of the current transformer 4 are connected to the emitter-to-base transistors 8 and 9. The start node 10 is connected between the base and collector of the transistor 9. The other two ends of the start node are connected to the power source 1. The start node 10 is made on the basis of a relaxation generator a.

Stimulus works as follows.

When supply voltage is applied from source 1, trigger node 10, which represents

a relaxation generator, produces short pulses that unlock transistor 9. The capacitors included in block 2) begin to charge or power supply 1 through inductor 3, the primary winding 5 of the current transformer 4 and the open transistor 9. The block of capacitors 2 and inductor 3 form an oscillatory circuit, the current in which varies according to a law close to sinusoidal. As the current through the oscillating circuit increases, the current through the primary winding 5 and the magnetizing current of the current transformer A increases. At the same time, the control transition current of the transistor 9, coming from the secondary winding 7 of the transformer 4, increases and keeps the transistor 9 in the open state. The base current of an open transistor 9 is proportional to the current of its collector and is determined by the transformation ratio of the current transformer 4, the EMF of the secondary winding of the current transformer 4 is directed so that the transistor 8 is locked.

After the collector current of the transistor 9 decreases to zero and the charge of the block of capacitors 2 terminates, the base current of the transistor 9 decreases to zero and it closes.

Due to the magnetizing current of the transformer 4, the EMF on its windings changes sign, the transistor 8 opens, and the recharging of the capacitor block 2 through inductor 3 begins.

Further, the processes in the circuit are repeated. In this case, the oscillation frequency of the electromagnetic field of the inductor is automatically set equal to the resonance frequency of the circuit formed by the block of capacitors 2 and the inductor 3.

Obtaining other values of the stimulation frequency is achieved by varying the capacitance of the block of capacitors 2.

Inductor 3 is a vessel with a coil wound around it. The vessel is filled with seeds.

If necessary, the proposed stimulator can be supplemented with devices for holding and displaying time.

Claims (1)

Invention Formula A seed germination stimulator containing a power source, two transistors whose power electrodes have a common point, a transistor control unit connected to their base circuits, and a series resonant circuit including a capacitor unit and an inductor connected to it, characterized in that in order to simplify the design of the stimulator and its use, as well as to reduce material consumption, it is equipped with start, connected to a power source, the first output of the start node is connected to the base, and the second to the collector of one of the transistors with which the emitter of the other transistor is connected, and the transistor control node is designed as a current transformer, the corresponding secondary windings of which are connected to The emitter junctions are the base of the respective transistors, and the primary winding of the current transformer is connected in series with the resonant circuit between the inductor and the common point of the power electrodes of the transistors, the second power electrodes of which are connected to the power supply terminals.