JPH02243169A - Improvement in electromagnetic therapeutic instrument - Google Patents

Abstract

PURPOSE:To improve an efficiency of a generated electromagnetic energy by inserting an impedance in series with a charging diode connected to a condenser in reverse polarity to an electric charge and further by connecting a diode in parallel and reverse polarity to a switch element. CONSTITUTION:A commercial AC power source 1 forms a half-wave voltage- doubler rectification circuit together with a condenser 2 and diodes 3, 4, and a rectified DC is charged into a condenser 6. This charge is discharged through a coil 7 by a thyristor 9, which is turned on by receiving a firing pulse periodically into a gate from a gate circuit. If a resistor 5 is connected in series with the diodes 4, 3 in order to prevent the aforementioned discharge, an electromagnetic energy of the coil is converted into a voltage energy of reverse polarity and charges the condenser 6. Furthermore, if a diode 8 is connected in parallel with the thyristor 9, the charge of reverse polarity charged in the condenser 6 is discharged through the diode 8 and the coil 7, therefore, a current of just one cycle flows through the coil. A voltage induced in a conductor nearby the coil equals to a differential wave form of that current, exhibits three pulses, i.e. upward, downward and upward pulses, as compared with the ordinary one upward pulse, and has an almost threefold electromagnetic energy.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to the improvement of electromagnetic therapy devices, and more specifically, by discharging the electric charge charged in a capacitor with a thyristor and passing the current through the coil. In an electromagnetic treatment device that generates a pulsed electromagnetic field, increase the efficiency of the generated electromagnetic field energy by allowing the C resonant circuit between the coil and capacitor to vibrate freely for one cycle or until the end of attenuation. That is.

[Prior Art] The present inventor first discharged the electric charge charged in a capacitor using a thyristor, and the current at that time was transferred to a coil. A method that generates a pulsed electromagnetic field by flowing
Invented the IX magnetizer, which was published as a patent application in 1988-1.
This type of electromagnetic treatment device, registered as Patent No. 736 and Patent No. 1394202, has a very high therapeutic effect and is being applied in a wide range of areas.

[Problems to be Solved by the Invention] However, this has the disadvantage that the efficiency of injecting electromagnetic energy into the body is very low.

In other words, the electric charge stored in the capacitor has a si risk of O.
When N is applied, the current flows through the coil, and the coil and capacitor attempt to self-oscillate, but the rectifier diode connected to both ends of the capacitor shuts off the capacitor voltage, stopping the self-oscillation, resulting in only 1/4 cycle of vibration. Only electromagnetic fields are generated.

[Means for solving the problem] Therefore, if an impedance is connected in series with the rectifier diode so that the rectifier diode does not interfere with the voltage of the capacitor, a voltage of opposite polarity will be generated in the capacitor, and the voltage of the capacitor will be reduced by I/2 cycle. An electromagnetic field is generated.

Furthermore, if a diode is connected in parallel to the thyristor so that current flows in the opposite direction, an electromagnetic field for one cycle is generated.

Further, when a trigger pulse is applied to the gate of the thyristor at an appropriate phase, the damped oscillation continues for several cycles according to the Q of the circuit.

[Example] A detailed description will be given below with reference to the drawings. Fig. 3 is a circuit diagram of a conventional electromagnetic treatment device. 1 is an AC commercial power supply, and a half-wave voltage doubler rectifier circuit is formed by a capacitor 2 and a diode 3.4, and the rectified DC is charged to a capacitor 6. Ru. This charge is discharged through the coil 7 by a thyristor 9 which is turned on by periodically receiving an ignition pulse at its gate by an ignition circuit (not shown).

At this time, the current waveform flowing through the coil 7 becomes a single-peak pulse waveform that rises sharply and gradually attenuates as shown in FIG.

The eddy current flowing in the conductor close to this coil becomes one narrow, high pulse and a wide, low pulse in the opposite direction, as shown in FIG. This is because the voltage energy stored in the capacitor 6 flows through the coil 7, turning it into electromagnetic energy, and the electromagnetic energy turns into voltage energy and attempts to charge the capacitor 6 in the opposite direction, but the diode 4.3 connects This is because this current will discharge through the diode.

Therefore, in order to prevent this discharge, diode 4.
When a resistor 5 is connected in series with 3, the electromagnetic energy of the coil becomes voltage energy of opposite polarity and charges a capacitor 6. Further, when the diode 8 is connected in parallel to the thyristor 9, the charge of the opposite polarity charged in the capacitor 6 is discharged through the diode 8 coil 7, and exactly one cycle of current flows.

The current at this time is shown in FIG. 6, and exactly one cycle of current flows. Further, the voltage induced in the conductor near the coil is equal to the differential waveform of FIG. 6, and becomes as shown in FIG. 7.

Figure 7 has three pulses, one above and one above, and has about three times as much electromagnetic energy as the conventional one, which only has one pulse at the top of Figure 5. Therefore, the method of the present invention can induce approximately three times as much electromagnetic energy into an object close to the coil as compared to the conventional method, and furthermore, the voltage of the capacitor 6 is approximately 7 times higher than that of the conventional method.
The current changes as shown in the figure, and the current stops at the end of one cycle when the voltage in the same direction as the initially charged voltage is charged, so the charging current required for the next pulse is approximately 10
Therefore, the efficiency is improved by several tens of times.

Furthermore, FIG. 2 shows another embodiment in which a diode 8 connected in parallel to a thyristor 9 and a coil wound around a small ring core are connected to a thyristor 9.
A simple one with the wire passed through the ring core as the primary coil may be sufficient. Although not shown, an ignition circuit for giving the first shot is connected to the gate of the thyristor 9, and the secondary coil of the transformer 11 is connected in parallel with this ignition circuit.

When the transformer is connected in this way, when the charge charged in the capacitor with the opposite polarity is discharged through the diode 8 at the end of the operation described in FIG. 1, the transformer 10.
Since the firing voltage is applied to the gate of the thyristor 9 by the thyristor 9, the thyristor 9 fires again, sustaining the next cycle of oscillation, and the thyristor continues ONL until the oscillation is completely damped. The current passing through the coil at this time is as shown in Figure 8,
The voltage induced in objects near the coil is as shown in Figure 9. In this case, approximately 10 times as much electromagnetic energy as in Figure 1 can be applied to objects near the coil.

[Effects of the Invention] As described above, the present invention is an excellent invention that can increase the emitted energy by 3 to 10 times and improve the efficiency by more than 10 times by adding only a few parts.

[Brief explanation of drawings]

FIG. 1 shows one embodiment of the present invention, FIG. 2 shows another embodiment of the invention, and FIG. 3 shows a wiring diagram of a conventional magnetic pulse therapy device. Fig. 4 shows the waveform of the current flowing through the coil of the conventional magnetic pulse therapy device, Fig. 5 shows the waveform of the voltage induced in an object close to the coil of the conventional magnetic pulse therapy device, and Fig. 6 shows the waveform of the voltage induced in the object near the coil of the conventional magnetic pulse therapy device. The waveform of the current flowing through the coil in the example shown in FIG.
Figure 8 shows the waveform of the voltage induced in an object close to the coil of the second embodiment, and the waveform of the current flowing through the coil of the second embodiment.
FIG. 9 shows the waveform of the voltage induced in an object close to the coil of the second embodiment. l AC commercial power supply, 2.6 capacitor, 3.4.8 diode, 5, impedance, 7 pulse magnetic generation coil, 9 thyristor, lo, 11 transformer +: +5 Ayushima Ie -α ba Bewa and Horotsu) "March 5, 1990 l, Indication of the case 1989 Patent Application No. 66592 2, Name of the invention Improvement of electromagnetic therapy device 3, Person making the amendment Relationship to the case

Claims (1)

[Claims] 1 In an electromagnetic treatment device that generates a pulsed electromagnetic field by discharging the electric charge charged in a capacitor through a coil and a switch element, a charging device connected to the capacitor with the opposite polarity to the charged electric charge is used. Electromagnetic treatment device 2 characterized by inserting an impedance in series with a diode and connecting a diode in parallel with a switch element with opposite polarity. In an electromagnetic treatment device that generates a pulsed electromagnetic field, an impedance is inserted in series with a charging diode connected to a capacitor with the opposite polarity to the charged charge, and a diode is connected in parallel with the switching element with opposite polarity. An electromagnetic treatment device characterized by having means for connecting the switching element and keeping the switching element conductive until the resonant voltage due to the capacitor and the coil is attenuated.