CN104027887A - Power supply circuit suitable for medium-frequency electro-therapeutic instrument - Google Patents
Power supply circuit suitable for medium-frequency electro-therapeutic instrument Download PDFInfo
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- CN104027887A CN104027887A CN201410304020.8A CN201410304020A CN104027887A CN 104027887 A CN104027887 A CN 104027887A CN 201410304020 A CN201410304020 A CN 201410304020A CN 104027887 A CN104027887 A CN 104027887A
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- bridge rectifier
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- power supply
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Abstract
The invention discloses a power supply circuit suitable for a medium-frequency electro-therapeutic instrument. The power supply circuit comprises a first power supply circuit, a second power supply circuit and a third power supply circuit. The first power supply circuit comprises a first bridge rectifier circuit and a first three-end voltage stabilizer which are electrically connected. The second power supply circuit comprises a second bridge rectifier circuit and a second three-end voltage stabilizer which are electrically connected. The third power supply circuit comprises a third bridge rectifier circuit, a diode and a third three-end voltage stabilizer which are electrically connected in sequence. Voltage output ends and voltage input ends of the first three-end voltage stabilizer, the second three-end voltage stabilizer and the third three-end voltage stabilizer are connected with a decoupling circuit. The input ends of the first bridge rectifier circuit, the second bridge rectifier circuit and the third bridge rectifier circuit are connected with self-recovery fuse wires. The decoupling circuit comprises a first capacitor and a second capacitor. The first capacitor and the second capacitor are connected in parallel, and a common end is connected to the ground. Various voltages can be provided, so that the performance of electronic elements of the medium-frequency electro-therapeutic instrument is best.
Description
Technical field
The present invention relates to field of power supplies, specifically, relate to a kind of for being applicable to the power-supply circuit of electro-therapeutic apparatus of intermediate frequency.
Background technology
Electro-therapeutic apparatus of intermediate frequency is the electric current of intermediate frequency by low frequency modulations.So both retained the feature of low frequency electricity, and brought into play again the feature of medium frequency electric, electrotherapy has analgesia, detumescence, antiinflammatory, desensitization, relieve muscle spasms, reinforcement tissue tension, promotes to recover the therapeutical effect such as normal nerve conduction and regulatory function.In electro-therapeutic apparatus of intermediate frequency, contain a lot of electronic components, the electronic component in it is more, and the operation of each electronic component all needs to provide power supply, such as operational amplifier, controller etc.Due to the supply voltage difference of each electronic component, at power supply supply respect, if a power supply is directly provided, due to the demand voltage difference of each electronic component, the operation of electronic component is restricted, makes electro-therapeutic apparatus of intermediate frequency can not well bring into play its performance, affect result of use.
Summary of the invention
Technical problem to be solved by this invention is to provide one can provide multiple voltage, so that each electronic component performance of electro-therapeutic apparatus of intermediate frequency reaches optimum power-supply circuit.
The present invention addresses the above problem adopted technical scheme:
Be applicable to the power-supply circuit of electro-therapeutic apparatus of intermediate frequency, comprise the first power circuit, second source circuit and the 3rd power circuit, the first described power circuit comprises the first bridge rectifier and first three terminal regulator of electric connection, described second source circuit comprises the second bridge rectifier and second three terminal regulator of electric connection, the 3rd described power circuit comprises the 3rd bridge rectifier being electrically connected successively, diode and the 3rd three terminal regulator, the first described three terminal regulator, the voltage input end of the second three terminal regulator and the 3rd three terminal regulator and voltage output end are all connected with decoupling circuit, the first described bridge rectifier, on the input of the second bridge rectifier and the 3rd bridge rectifier, be all connected with resettable fuse, described decoupling circuit comprises the first electric capacity and the second electric capacity, the first described electric capacity and the second electric capacity are in parallel and a common end grounding.In the present invention, provide three power supplys to supply with branch roads, i.e. the first power circuit, second source circuit and the 3rd power circuit, provides respectively different voltage for different electronic components, so that the performance of each electronic component reaches optimum.Supply voltage inputs to subsequent conditioning circuit after bridge rectifier rectification, three terminal regulator carries out voltage stabilizing to voltage, to offer follow-up electronic component, its circuit structure is simple, decoupling circuit adopts two electric capacity in parallel, the decoupling circuit of the voltage input end of the first three terminal regulator, the second three terminal regulator and the 3rd three terminal regulator carries out filtering to AC noise, makes the electric current of output more steady; The decoupling circuit filtering high-frequency signal of the voltage output end of the first three terminal regulator, the second three terminal regulator and the 3rd three terminal regulator, changes the transient response of circuit; Decoupling circuit strengthens the stability of circuit.The resettable fuse of the input of the first bridge rectifier, the second bridge rectifier and the 3rd bridge rectifier is protected whole power circuit and follow-up electronic component; in the time there is short circuit or overload in the first power circuit, second source circuit and the 3rd power circuit; automatically disconnect, play a protective role.The 3rd power circuit is on the basis of the first power circuit, second source circuit, between the 3rd bridge rectifier and the 3rd three terminal regulator, connect diode, the electrode slice that this power branch is electro-therapeutic apparatus of intermediate frequency and the electronic component of drive circuit thereof provide power supply, diode has unipolarity, make the signal of telecommunication can only one-way flow, ensure that the signal of telecommunication on electrode slice can only one-way transmission, avoid the destruction of static electricity on human body to electro-therapeutic apparatus of intermediate frequency; And the outfan connecting interface b of the 3rd bridge rectifier of this power branch, it directly provides pulsating volage for the panel of electro-therapeutic apparatus of intermediate frequency, makes the control signal of panel synchronize with electrode slice.
As preferably, the first described three terminal regulator is LM7912, and the second described three terminal regulator is LM7805, and the 3rd described three terminal regulator is LM7815.The first three terminal regulator, the second three terminal regulator and the 3rd three terminal regulator adopt respectively LM7912, LM7805 and LM7815, produce respectively different magnitude of voltage output, be the voltage of generation-12V, 5V, 15V between outfan and ground, to offer the different electronic components of electro-therapeutic apparatus of intermediate frequency, meet the power demands of each electronic component.
As preferably, the first described electric capacity is the electrochemical capacitor of 220 μ f, and the second described electric capacity is the electric capacity of 0.1 μ f.Adopt the electric capacity of 0.1 μ f, its capacitance is little, can effectively reduce the internal resistance of power supply high frequency.The first electric capacity and the second Capacitance parallel connection form decoupling circuit, its capacitance small one and large one, utilize large capacitance electric capacity little to low frequency signal capacitive reactance, the characteristic that low-capacitance electric capacity is little to high-frequency signal capacitive reactance, reduces the interference of power supply.
To sum up, the invention has the beneficial effects as follows:
1, the present invention adopts three power branch to produce respectively different magnitudes of voltage, utilize the different electronic component power supplies to electro-therapeutic apparatus of intermediate frequency respectively of different voltage, make the performance of each electronic component of electro-therapeutic apparatus of intermediate frequency reach optimum, make the best performance of electro-therapeutic apparatus of intermediate frequency.
2, circuit structure of the present invention is simple, is easy to realize.
3, the 3rd power circuit of the present invention both can be panel provides pulsating volage, and the control signal of panel is synchronizeed with electrode slice; Its diode has unipolarity, also makes the signal of telecommunication on electrode slice can only one-way transmission, avoids the destruction of static electricity on human body to electro-therapeutic apparatus of intermediate frequency.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiment 1:
A kind of power-supply circuit that is applicable to electro-therapeutic apparatus of intermediate frequency as shown in Figure 1, comprise the first power circuit, second source circuit and the 3rd power circuit, the first described power circuit comprises the first bridge rectifier and first three terminal regulator of electric connection, described second source circuit comprises the second bridge rectifier and second three terminal regulator of electric connection, the 3rd described power circuit comprises the 3rd bridge rectifier being electrically connected successively, diode and the 3rd three terminal regulator, the first described three terminal regulator, the voltage input end of the second three terminal regulator and the 3rd three terminal regulator and voltage output end are all connected with decoupling circuit, the first described bridge rectifier, on the input of the second bridge rectifier and the 3rd bridge rectifier, be all connected with resettable fuse, described decoupling circuit comprises the first electric capacity and the second electric capacity, the first described electric capacity and the second electric capacity are in parallel and a common end grounding.In the present embodiment, utilize respectively three different power branch to produce different voltage to offer each electronic component of electro-therapeutic apparatus of intermediate frequency, make each electronic component obtain it and move required voltage.The alternating current of the first power circuit is input in power circuit through interface a, after processing, the first bridge rectifier obtains unidirectional current, the decoupling circuit of the first three terminal regulator voltage input end carries out flowing to the first three terminal regulator after decoupling to unidirectional current, the first three terminal regulator is processed and is obtained a magnitude of voltage again through decoupling circuit processing unidirectional current, strengthen the stability of output voltage, ensure the reliability service of follow-up each electronic component.The operation principle of second source circuit is identical with the operation logic of the first power circuit.The 3rd power circuit only connects a diode at the outfan of the 3rd bridge rectifier, and diode has signal one-way transmission, avoids current reflux, the reliability of intensifier circuit.
Embodiment 2:
A kind of power-supply circuit that is applicable to electro-therapeutic apparatus of intermediate frequency as shown in Figure 1, the present embodiment discloses one group of detailed description of the invention on the basis of above-described embodiment, the first described three terminal regulator is LM7912, the second described three terminal regulator is LM7805, and the 3rd described three terminal regulator is LM7815.
The first described electric capacity is the electrochemical capacitor of 220 μ f, and the second described electric capacity is the electric capacity of 0.1 μ f.
The electronic component of electro-therapeutic apparatus of intermediate frequency inside adopts operational amplifier, controller, power amplifier, the voltage of its needs-12V ,+15V ,+5V, adopt LM7912, LM7805 and can produce respectively-12V of LM7815 ,+15V ,+5V, meet the operation demand of each electronic component.Resettable fuse can be different according to voltage different choice model, can adopt JK60-050 or JK60-135.Bridge rectifier can adopt KBPC-25-10.
As mentioned above, can realize preferably the present invention.
Claims (3)
1. be applicable to the power-supply circuit of electro-therapeutic apparatus of intermediate frequency, it is characterized in that: comprise the first power circuit, second source circuit and the 3rd power circuit, the first described power circuit comprises the first bridge rectifier and first three terminal regulator of electric connection, described second source circuit comprises the second bridge rectifier and second three terminal regulator of electric connection, the 3rd described power circuit comprises the 3rd bridge rectifier being electrically connected successively, diode and the 3rd three terminal regulator, the first described three terminal regulator, the voltage input end of the second three terminal regulator and the 3rd three terminal regulator and voltage output end are all connected with decoupling circuit, the first described bridge rectifier, on the input of the second bridge rectifier and the 3rd bridge rectifier, be all connected with resettable fuse, described decoupling circuit comprises the first electric capacity and the second electric capacity, the first described electric capacity and the second electric capacity are in parallel and a common end grounding.
2. the power-supply circuit that is applicable to electro-therapeutic apparatus of intermediate frequency according to claim 1, is characterized in that: the first described three terminal regulator is LM7912, and the second described three terminal regulator is LM7805, and the 3rd described three terminal regulator is LM7815.
3. the power-supply circuit that is applicable to electro-therapeutic apparatus of intermediate frequency according to claim 1, is characterized in that: the first described electric capacity is the electrochemical capacitor of 220 μ f, and the second described electric capacity is the electric capacity of 0.1 μ f.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410304020.8A CN104027887B (en) | 2014-06-30 | 2014-06-30 | It is applicable to the power-supply circuit of electro-therapeutic apparatus of intermediate frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410304020.8A CN104027887B (en) | 2014-06-30 | 2014-06-30 | It is applicable to the power-supply circuit of electro-therapeutic apparatus of intermediate frequency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104027887A true CN104027887A (en) | 2014-09-10 |
| CN104027887B CN104027887B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410304020.8A Active CN104027887B (en) | 2014-06-30 | 2014-06-30 | It is applicable to the power-supply circuit of electro-therapeutic apparatus of intermediate frequency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345054A (en) * | 2016-08-23 | 2017-01-25 | 哈尔滨工业大学 | Programmable functional electrical stimulator with real-time feedback function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2198838Y (en) * | 1994-08-12 | 1995-05-31 | 杨占军 | Electrothermic rug without induction electricity |
| CN2493229Y (en) * | 2001-07-11 | 2002-05-29 | 何超焕 | High/low frequency electronic masseur |
| CN101274121A (en) * | 2008-05-19 | 2008-10-01 | 胡立武 | Polar pulse magnetic and far infrared radiation composite energy therapeutic equipment with two-way switchable outputs |
| CN201490884U (en) * | 2009-04-29 | 2010-05-26 | 新华自动化科技发展(上海)有限公司 | Novel voltage converting circuit |
| US8688240B1 (en) * | 2012-10-30 | 2014-04-01 | Mitosis Inc. | Device for neuro-physiologic stimulation |
-
2014
- 2014-06-30 CN CN201410304020.8A patent/CN104027887B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2198838Y (en) * | 1994-08-12 | 1995-05-31 | 杨占军 | Electrothermic rug without induction electricity |
| CN2493229Y (en) * | 2001-07-11 | 2002-05-29 | 何超焕 | High/low frequency electronic masseur |
| CN101274121A (en) * | 2008-05-19 | 2008-10-01 | 胡立武 | Polar pulse magnetic and far infrared radiation composite energy therapeutic equipment with two-way switchable outputs |
| CN201490884U (en) * | 2009-04-29 | 2010-05-26 | 新华自动化科技发展(上海)有限公司 | Novel voltage converting circuit |
| US8688240B1 (en) * | 2012-10-30 | 2014-04-01 | Mitosis Inc. | Device for neuro-physiologic stimulation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345054A (en) * | 2016-08-23 | 2017-01-25 | 哈尔滨工业大学 | Programmable functional electrical stimulator with real-time feedback function |
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| CN104027887B (en) | 2016-08-24 |
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Address after: 610000 Sichuan city of Chengdu province Chenghua District two East 3rd Ring Rd section of Longtan Industrial Park Patentee after: Sichuan Trinidad times Yikang medical Polytron Technologies Inc Address before: 610000 Sichuan city of Chengdu province Chenghua District two East 3rd Ring Rd section of Longtan Industrial Park Patentee before: Chengdu a thousand li Electronics Equipment Co., Ltd |