JP3198094U - AC potential treatment device - Google Patents

Abstract

Provided is an AC potential therapeutic device that alternately supplies two positive and negative sine half-wave voltages with different phases of 180 to a primary coil of a step-up transformer to obtain a high-voltage biologically applied AC output from the secondary side. The positive and negative DC voltages are respectively switched and controlled by two width-modulated high-frequency pulses that are pulse-width-modulated by two sine half-wave signals having phases different from each other by 180 or so. After obtaining two width-modulated amplified pulse outputs, each of these pulse outputs is demodulated separately through a demodulating circuit 4 including a parallel circuit of a choke coil and a diode. A demodulated sine half-wave output is obtained, and these positive and negative sine half-wave outputs are alternately supplied to the primary coil L1 of the step-up transformer, and the high-voltage sine wave alternating current generated in the transformer secondary coil L2 is supplied by the positive voltage bleeder circuit 5. Biologically applied alternating current having a peak value ratio of positive voltage to negative voltage of 1: 3 is obtained. [Selection] Figure 1

Description

The present invention relates to an AC potential treatment device, and more particularly to improvement of means for generating a sine wave AC input to a step-up transformer.

As a conventional AC potential treatment device, for example, a positive voltage bleeder circuit provided in a secondary coil of a commercial AC step-up transformer as described in Japanese Patent No. 2609574 (Patent Document 1) uses a positive voltage and a negative voltage applied to a living body. An AC potential treatment device in which the ratio of the peak value to the voltage is set to 1: 3 is well known, and Japanese Utility Model Laid-Open No. 61-118346 (Patent Document 2) / Japanese Patent Laid-Open No. 2006-239032.
The potential for obtaining the rectangular wave high voltage by supplying the amplified output of the rectangular wave oscillation circuit to the primary coil of the step-up transformer and connecting a diode and a resistor to the high-voltage secondary coil of this transformer, as in Japanese Patent Publication (Patent Document 3) Treatment devices are well known.

Patent Document 1 (Japanese Patent No. 2609574) discloses an alternating-current potential treatment in which a peak value ratio between an alternating positive voltage and a negative voltage is set to 1: 3 when an alternating high voltage is applied to a living body to perform treatment. Although an AC potential can be applied to a living body at a rate equal to the ideal ratio of positive and negative ions in a healthy human body, this Patent Document 1 describes commercial use as described in the only example in paragraph 0009. Since alternating current from the power source is used as the input of the step-up transformer, even if the alternating current applied to the living body is limited to 50 Hz or 60 Hz in Japan.

In recent years, among a large number of patients who are performing potential therapy with the AC potential therapy device of Patent Document 1 in Japan, from a plurality of patients in the 60 Hz region west of Fuji River and Itoi River,
Voices seem to be better than the potential treatment in the eastern 50Hz region that this treatment is more effective and quicker, and among the multiple patients in the 50Hz region,
Some people are starting to say that one is not enough.

On the other hand, since the Japanese Utility Model Publication No. 61-118346 and Japanese Patent Application Laid-Open No. 2006-239032 (Patent Documents 2 and 3) are both potential treatment devices having an oscillation circuit, the living body applied alternating current is not limited to the commercial power supply frequency, In each of these documents, as described in the only examples, the rectangular wave signal obtained by the rectangular wave oscillation circuit is output and amplified as it is, and is input to the primary coil of the step-up transformer, and the rectangular wave generated in the secondary coil. The biologically applied AC voltage having a waveform close to a rectangular wave as shown in FIG.

Therefore, even if the class B bush-pull amplifier circuit is used for the rectangular wave output amplifier circuit in each of these documents 2 and 3, there is an essential problem that the efficiency is as low as 50% or less. Since the input and output of References 2 and 3 are both rectangular wave voltages, using a current general inexpensive booster transformer made of a core material and a stranded wire compatible with commercial power supplies can easily generate unwanted roaring noise. There is a fundamental and serious problem that it is easy to overheat.

Furthermore, the living body impressed alternating current by the high-voltage rectangular wave output of each of the above-mentioned Patent Documents 2 and 3 is likely to cause harmful ringing, overshoot, and preshoot. Therefore, the living body impressed alternating current using a smoothly changing sine wave is used. Compared with electric potential treatment, these Patent Documents 2 and 3 tend to leave a discomfort such as hot water after electric potential treatment, and are poor in the effectiveness and rapid efficacy of the electric potential treatment effect.
There is also a fundamental problem that biological rejection reactions occur.

In addition to the conventional examples according to Patent Documents 1 to 3, an alternating current waveform including a high frequency component is generated by a switching inverter as disclosed in Japanese Patent Application Laid-Open No. 2009-279024 (Patent Document 4), and this alternating current output is passed through a filter circuit. A potential therapy device that is supplied to the primary coil of the step-up transformer, or two high-frequency pulses are separately input to the two step-up pulse transformers, as in JP 2011-24859 A (Patent Document 5), A potential treatment device in which a diode, a smoothing capacitor, and an electrode are connected to a high-voltage secondary coil of each pulse transformer is also well known.

JP-A-2009-279024 (Patent Document 4) is an open patent publication directly filed by the applicant, and only the known matters and desires are listed together with handwritten cartoon drawings. In the end, it can be read from the description of paragraph 0011 that the potential treatment device uses a current class D audio amplifier based on pulse width modulation as an AC output circuit applied to the primary coil of the step-up transformer. However, since there is no description regarding the important concrete circuit, even if this person sees this Unexamined-Japanese-Patent No. 2009-279024, there exists a big fundamental problem that the said electric potential treatment device cannot be made and cannot be implemented. .

Class D audio amplifiers have a full bridge circuit configuration using two series of switching elements such as two power MOS FETs and bipolar transistors, and a half bridge circuit using only one series of two switching elements. The essential matter that the class D audio amplifier of the half bridge configuration can be used at low cost with a small number of parts is not described in the above-mentioned Patent Document 4 and is not even suggested.

On the other hand, the disadvantage of class D audio amplifiers with a half-bridge configuration is “bus pumping”, mainly due to the self-induced current of the demodulation coil when driving a load (step-up transformer).
Free wheeling to suppress fluctuations in power supply voltage caused by phenomena
The important matter that there is a fundamental and serious problem in that there is no place where the diode can be connected in the amplifier circuit through which alternating current flows and the fluctuation of the power supply voltage due to the above phenomenon cannot be eliminated. There is no description at all.

The class D audio amplifier of the current general half-bridge configuration has the above-mentioned “bus pumping” when the load (step-up transformer) is bus-driven at a low frequency below 200 Hz.
The fluctuation of the power supply voltage due to the phenomenon increases, and the extent is as the frequency is lower, the load impedance is smaller, the bus capacitor value is smaller, the duty ratio is 25% and 75%
At the time, the most important thing is that there is an essential and big problem that the fluctuation of the power supply voltage due to the harmful and unnecessary “bus pumping” phenomenon increases and the operation of the potential treatment device becomes extremely unstable. The above-mentioned Patent Document 4 is not described at all, and there is no suggestion.

However, D in a general full-bridge circuit configuration using two rows of two switching elements in series.
In class audio amplifiers, the “bus pumping” phenomenon can be prevented and suppressed by the diode action of the switching element itself in the pause state, and diodes connected in parallel to these elements, for example, from the source to the drain. Although the fluctuation does not occur, the essential fact that the number of parts used is twice that of the half-bridge configuration and there is an incongruent essential problem that it is disadvantageous in terms of space and cost is also described in Patent Document 4 above. Is not described at all.

On the other hand, Japanese Patent Laid-Open No. 2011-24859 (Patent Document 5) discloses paragraphs 0020 and 002.
2, two high-frequency switching pulses are respectively input to two boosting high-frequency pulse transformers, and a diode and a resistor connected to the high-voltage secondary coil of one of the pulse transformers and a smoothing capacitor are connected in parallel. A positive high voltage pulse voltage is obtained by a circuit, and a negative high voltage pulse voltage is obtained by a parallel circuit of a diode and a resistor connected to the high voltage secondary coil of the other pulse transformer and a smoothing capacitor. This is a potential therapy device that supplies voltages to two electrodes through protective resistors.

Therefore, this Patent Document 5 has a fundamental problem that a single electrode cannot apply a high-voltage alternating current to a living body, and is compared with a potential treatment by a living body-applied alternating current using a sine wave that changes smoothly. Thus, Patent Document 5 has a fundamental and serious problem that unpleasant feeling such as hot water is likely to remain after electric potential treatment.

Further, in Patent Document 5, as compared with a single-electrode potential treatment device, a pulse boosting transformer, a diode / smoothing capacitor connected to the high-voltage secondary coil, a Himmeg resistor for bioprotection, an electrode, etc. Because it requires twice as many expensive high-voltage electrical parts,
Patent document 5 has the essential and big problem that it becomes expensive with bad workability.

Japanese Patent No. 2609574 Japanese Utility Model Publication No. 61-118346 JP 2006-239032 A JP 2009-279024 A JP 2011-24859 A

An object of the present invention is to solve the above-mentioned many problems by converting a positive and negative demodulated sine half-wave output obtained by demodulating two positive and negative width modulated high frequency pulse outputs whose phases are 180 ° different from each other into a step-up transformer. By alternately supplying the primary coil, a high-voltage biologically applied AC output is obtained from the secondary side of the transformer.

The object of the present invention is to construct a potential treatment device that applies an alternating high voltage to a living body to perform treatment, and the phase obtained from a sinusoidal low frequency signal having a frequency of about 60 Hz to 200 Hz, for example, about 70 to 120 Hz. By switching control of positive and negative DC voltages sufficiently larger than the low-frequency signal by two width-modulated high-frequency pulses that are pulse-width modulated by two sine half-wave signals that differ from each other by 180 °, the phases are 180 ° each other. Two different positive and negative width-modulated amplified pulse outputs are obtained.

After that, each pulse output is demodulated separately through a demodulating circuit composed of a choke coil and a diode in parallel and a capacitor to obtain two positive and negative demodulated sine half-wave outputs whose phases are 180 ° different from each other. By alternately supplying positive and negative sine half-wave outputs to the primary coil of the step-up transformer, the high voltage sine wave alternating current generated in the transformer secondary coil has a peak value ratio of positive voltage to negative voltage of 1 by a positive voltage bleeder circuit. This could be achieved by using a living body impressed with 3 pairs.

According to this device, when demodulating the two types of positive and negative width modulated amplified pulse outputs whose phases are different from each other by 180 °, in the present invention, the self-induced current generated on the output side of the choke coil is converted into a diode in parallel with this coil. Thus, it is possible to return to the input side of the coil, so that there is an excellent effect that the fluctuation of the power supply voltage due to the harmful and unnecessary bus pumping phenomenon can be suppressed without difficulty.

That is, the diode in parallel with the choke coil operates as the free wheeling diode for returning the self-induced current generated in the choke coil from the output side to the input side when demodulating the width modulated amplified pulse output. The positive and negative two-system pulse outputs can be demodulated properly without difficulty, and the positive and negative two-system demodulated sine half-wave outputs having phases different from each other by 180 ° can be obtained.

More specifically, during the ON period of each switching element for obtaining the positive and negative two-line width modulated amplified pulse output, the supply to the output side is suppressed while accumulating part of the input voltage in the choke coil. Since the self-inductive current of the coil can be returned from the output side of the coil to the input side via a diode connected in parallel to the coil during the off period of the element, it has an excellent effect of suppressing power supply voltage fluctuation due to the bus pumping phenomenon. Yes.

More specifically, each choke coil and diode operate as a filter that reduces the change in the square wave of the high-frequency pulse, that is, the alternating current component, so that the demodulated sine half-wave outputs of two positive and negative systems that change smoothly can be obtained. 1 of a step-up transformer with an extremely high efficiency of about 90%
Since it can be alternately supplied to the secondary coil and a high voltage sine wave alternating current can be generated in the transformer secondary coil,
It was possible to obtain an excellent effect that the power consumption can be reduced.

In addition, the present invention alternately supplies two positive and negative demodulated sine half-wave outputs having a frequency of about 60 Hz to 200 Hz and phases different from each other by 180 ° to the primary coil of the step-up transformer. Since the wave alternating current can be generated without difficulty,
When the operating frequency is in the range of about 60 Hz to 200 Hz, an inexpensive silicon steel step-up transformer mass-produced corresponding to a commercial power supply can be used as it is, and an expensive silicon steel plate for audio frequencies is unnecessary. Greatly reduces manufacturing costs.

In the present invention, a positive voltage and a negative voltage having a ratio equal to an ideal existence ratio of positive and negative ions in a healthy human body from a sine wave voltage that smoothly changes at a frequency of about 60 Hz to 200 Hz, for example, about 70 to 120 Hz. Because it is possible to obtain a living body applied alternating current with a crest ratio of 1: 3 and apply it to the living body, it can always greatly promote the effectiveness and rapid efficacy of the therapeutic effect regardless of the commercial power frequency, and reject the living body. There is also an excellent effect that can be significantly reduced.

System circuit diagram showing an example of an AC potential treatment device according to the present invention Operation waveform diagram in the circuit of FIG.

Next, an example of an embodiment for carrying out the present invention will be described with reference to the drawings. An alternating current potential treatment device of the present invention is a potential treatment device configured to perform treatment by applying an alternating high voltage to a living body. As shown in the system circuit diagram of FIG. 1, a sine low frequency signal having a frequency of about 60 Hz to 200 Hz obtained from a general sine low frequency generation circuit 1 such as a C / R oscillation circuit or a positive feedback oscillation circuit is low frequency. Input to the primary coil of the transformer T.

2A generated at both ends A and B of the center-grounded secondary coil in the transformer T.
-By half-wave rectifying each of the two systems of sine wave voltages whose phases are 180 ° different from each other by diodes d connected in the same direction, the amplitude as shown in FIG. Two systems of sinusoidal half-wave signals having phases different from each other by 180 ° can be obtained, and these signals are respectively input to the input terminals C and E of the current general pulse width modulation circuit 2.

On the other hand, a high-frequency pulse having an amplitude of about 5 volts obtained from a general high-frequency pulse generation circuit 3 using a triangular wave oscillator having a frequency of about 100 KHz or the like is obtained, and this high-frequency pulse is obtained by using a pulse width modulation circuit 2 shown in FIG. By performing pulse width modulation on the basis of the two systems of sine half-wave signals, two systems having substantially comb-like waveforms and amplitudes of about 5 volts differing from each other by 180 ° as shown in FIG. To obtain a width modulated high frequency pulse.

After that, each pulse is switched to a pulse transformer PT or a current general gate drive IC (IC / FAN 7382N manufactured by Fairchild Inc., USA) as shown in FIG. The power is supplied to the control electrodes F and G such as the gate and base of the element Q, respectively.

Next, as shown in FIG. 1, positive and negative DC voltages obtained from a general DC power source DC using a commercial power source, for example, DC + V of about plus 130 volts and DC -V of about minus 130 volts.
Are respectively applied to the drain and source (collector and emitter) of the two switching elements Q, and the control electrode F of each element Q is passed through the pulse transformer PT.
From the source (emitter) H and drain (collector) I of each element Q by controlling the switching of the positive and negative DC voltages by the two switching elements Q by the width modulated high frequency pulses applied to G As shown in FIGS. 2A and 2B, two positive and negative width-modulated amplified pulse outputs can be generated at about plus and minus 130 volts each having a phase difference of 180 °.

After that, in demodulating each width modulated amplified pulse output, a parallel circuit of the choke coil L and the free wheeling diode d1 and the other end of which one end is connected to an interconnection J between these parallel circuits. Each demodulating circuit 4 is demodulated through a demodulating circuit 4 composed of a grounded capacitor C1 to obtain an AC output by a sine wave whose positive and negative peak values are both about 130 volts as shown in FIG. The AC output is supplied to the other end of the primary coil L1 that is grounded at one end in the step-up transformer TO.

More specifically, as shown in FIG. 1, a choke coil L of about 150 μH having the free wheeling diodes d1 connected in parallel, and a titer of about 0.1 μF connected to the interconnection J of these coils and grounded. 2 can be demodulated through the demodulating circuit 4 having the varicap capacitor C1, so that the two width-modulated amplified pulse outputs whose phases are different from each other by 180 ° can be demodulated, so that the interconnection J between the choke coils L in FIG. Both the positive and negative peak values as shown in
AC output by a sine wave of about 0 volts can be obtained.
By supplying to the other end of the primary coil L1 of one end grounding in O, the transformer secondary coil L2
In FIG. 2, a high-voltage sine wave alternating current of about 10 to 15 kilovolts as indicated by L in FIG.

One end of the secondary coil L2 in the step-up transformer TO is grounded Hi-Meg resistor R0.
And connected to a ground point in the DC power source DC, and between the both ends of the secondary coil L2, a parallel circuit of a large Himmeg resistor R1 of about 5 to 10 MΩ · 10 W and a diode D1, and a series of the parallel circuit 2 is connected to the positive voltage bleeder circuit 5 using the high-Meg resistor R2 and the diode D2, and the peak value ratio between the positive voltage and the negative voltage generated as indicated by M in FIG. Is applied to a conductive mat m insulated from the ground via a current limiting Himmeg resistor R3.

Therefore, since the living body applied AC according to the present invention is a living body applied AC using a sine wave that smoothly changes at a frequency of about 60 Hz to about 200 Hz, a positive rate of a ratio equal to an ideal existence ratio of positive and negative ions in a healthy human body. Since a biologically applied alternating current having a peak-to-peak ratio of voltage and negative voltage can be applied to a living body through the conductive mat m or the like, the biologically applied alternating current that always changes smoothly at the above frequency regardless of the commercial power supply frequency. Therefore, it was possible to greatly promote the effectiveness and rapid efficacy of the treatment effect at all times, and to prevent the occurrence of a living body rejection reaction.

However, in order to obtain a biologically applied alternating current having a peak value ratio between the positive voltage and the negative voltage of 1: 3, the resistance value ratio between the Himmeg resistors R1 and R2 may be set to 2: 1.

Naturally, the AC potential treatment device according to the present invention can be used as an AC potential treatment device that performs contact heating on the affected part of the living body with a conducting conductor instead of using the conductive mat m.

DESCRIPTION OF SYMBOLS 1 ... Sine low frequency generation circuit d * d1 * D1 * D2 ... Diode 2 ... Pulse width modulation circuit L ... Choke coil 3 ... High frequency pulse generation circuit L1 ... Primary coil 4 of a step-up transformer ... Demodulation circuit L2 ... 2 of a step-up transformer Next coil 5 ... Positive voltage bleeder circuit C1 ... Capacitor T ... Low frequency transformer Q ... Switching element PT ... Pulse transformer R1 / R2 / R0 / R3 ... High Meg resistor T0 ... Step-up transformer R ... Gate (base) input resistance m ... Conductive mat

Claims (1)

In an electric potential treatment device for performing treatment by applying an alternating high voltage to a living body, 60 Hz to 200 H
Positive and negative direct currents that are sufficiently larger than the low-frequency signal by two width-modulated high-frequency pulses that are pulse-width-modulated with two sine half-wave signals whose phases obtained from a sine low-frequency signal of about z are 180 ° different from each other. After switching the voltages to obtain two positive and negative width-modulated amplified pulse outputs whose phases are different from each other by 180 °, these pulse outputs are respectively passed through a parallel circuit of a choke coil and a diode and a demodulating circuit composed of a capacitor. By demodulating each separately, two demodulated sine half-wave outputs with positive and negative phases different from each other by 180 ° are obtained, and by alternately supplying these positive and negative sine half-wave outputs to the primary coil of the step-up transformer, the transformer secondary High voltage sine wave alternating current generated in the coil is converted to living body applied alternating current with a peak value ratio between positive voltage and negative voltage of 1: 3 by a positive voltage bleeder circuit. Position therapy device.

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