CN205081701U - Full wave rectifier circuit based on diode cluster - Google Patents
Full wave rectifier circuit based on diode cluster Download PDFInfo
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- CN205081701U CN205081701U CN201520644377.0U CN201520644377U CN205081701U CN 205081701 U CN205081701 U CN 205081701U CN 201520644377 U CN201520644377 U CN 201520644377U CN 205081701 U CN205081701 U CN 205081701U
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Abstract
The utility model discloses a full wave rectifier circuit based on diode cluster, including diode cluster circuit, non inverting input amplifier and inverting input amplifier, diode nest of tubes circuit includes five diodes, and wherein diode D1's positive pole and diode D3's negative pole all are connected with the positive port of VIN, and diode D2's positive pole and diode D4's negative pole all are connected with VIN negative terminal mouth, diode D1, diode D2's negative pole connecting resistance R1's left end, diode D3, diode D4's positive pole connecting resistance R6's left end, wherein, diode D5's positive pole is connected with resistance R1 left end, and diode D5's negative pole and resistance R6's left end are connected, and diode D5 is freewheeling diode, and resistance R1's left end is connecting resistance R3's left end simultaneously, forms diode circuit output voltage at resistance R1 left end and resistance R6 left end, the utility model discloses can utilize the neutralization of diode D5 to fall reverse electromotive force when the rectification, protection electronic component wholly alternaties the precision height.
Description
Technical field
The utility model relates to a kind of rectification circuit, specifically a kind of full-wave rectifying circuit based on diode group.
Background technology
In input, often run into the problem of ac small signal being carried out to full-wave rectification conversion, usual circuit adopts diode as rectifier cell.Due to the non-linear behavior of diode own, need certain bias voltage (0.2V ~ 0.7V) to work, there is dead band.Then rectifying conversion work cannot be completed for the AC signal being less than 0.2V.
Utility model content
The purpose of this utility model utilizes diode D5 to neutralize inverse electromotive force when being to provide a kind of rectification, protection electronic component, the full-wave rectifying circuit based on diode group that integral transformation precision is high, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
Based on a full-wave rectifying circuit for diode group, comprise diode group circuit, homophase input amplifier and anti-phase input amplifier, described diode group circuit comprises five diodes, wherein the anode of diode D1 and all positive with the VIN port of the negative electrode of diode D3 are connected, the anode of diode D2 is all connected with VIN negative terminal mouth with the negative electrode of diode D4, described diode D1, the left end of the negative electrode contact resistance R1 of diode D2, diode D3, the left end of the anode contact resistance R6 of diode D4, wherein, the anode of diode D5 is connected with resistance R1 left end, the negative electrode of diode D5 is connected with the left end of resistance R6, diode D5 is fly-wheel diode, the left end of the left end of resistance R1 contact resistance R3 simultaneously, diode circuit output voltage is formed at resistance R1 left end and resistance R6 left end, the structure of described homophase input amplifier is that the right-hand member of resistance R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of operational amplifier A 1 is connected with the output of operational amplifier A 1, and the output of operational amplifier A 1 connects the positive port of VOUT by resistance R2, the concrete structure of described anti-phase input amplifier is that the right-hand member of resistance R3 is connected with the inverting input of operational amplifier A 2, the inverting input of operational amplifier A 2 is connected with the output of operational amplifier A 2 through resistance R4, and the output of operational amplifier A 2 connects the positive port of VOUT by resistance R5, and the right-hand member of the in-phase input end contact resistance R6 of operational amplifier A 2, and the in-phase input end of operational amplifier A 2 connects VOUT negative terminal mouth, the in-phase input end ground connection simultaneously of operational amplifier A 2.
Compared with prior art, the beneficial effects of the utility model are:
1, in the utility model, alternating current enters internal body diodes by VIN port, respectively by diode D1, diode D4 and diode D2, the brachium pontis that diode D3 forms, at resistance R1 left end, resistance R6 left end forms the direct current of pulsation, diode D5 act as afterflow, when the load of this rectifier bridge is inductive load, diode D5 plays a role, inductive load is the load containing coil, and coil is a very large inductance, it can with the form store electrical energy in magnetic field, a large amount of magnetic field is stored when its work, when the coil is de-energized, at this moment magnetic field in coil will produce inverse electromotive force voltage, higher other elements being easy to puncture in line loop of this voltage, if the fly-wheel diode that in circuit, access one is just in time consistent with inverse electromotive force direction, so inverse electromotive force just can be neutralized in the form of electric current by fly-wheel diode thus protect other components and parts, use safety, stable,
2, the utility model obtains output voltage Uo, if resistance R2 resistance equals resistance R5, then Uo=U1+U2 according to voltage superposition principle output voltage U1, output voltage U2 respectively by resistance R2, resistance R5 superposition; When input signal is at T0 ~ T1, Ui >=0, the output voltage U1=Ui of operational amplifier A 1, and the output voltage U2=0 of operational amplifier A 2, Uo=U1; When input signal is at T1 ~ T2, Ui≤0, the output voltage U1=0 of operational amplifier A 1, resistance R3 resistance equals R4, then the output voltage U2=-Ui of operational amplifier A 2, Uo=U2;
3, the utility model integral transformation precision is high, adopts full linear circuit, and minimum commutation voltage can be low to 0.01V.
Accompanying drawing explanation
Fig. 1 is the structural representation of the full-wave rectifying circuit based on diode group.
Fig. 2 is voltage input-output schematic diagram in the circuit based on the full-wave rectifying circuit of diode group.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 2, in the utility model embodiment, a kind of full-wave rectifying circuit based on diode group, comprises diode group circuit, homophase input amplifier and anti-phase input amplifier, described diode group circuit comprises five diodes, wherein the anode of diode D1 and all positive with the VIN port of the negative electrode of diode D3 are connected, the anode of diode D2 is all connected with VIN negative terminal mouth with the negative electrode of diode D4, described diode D1, the left end of the negative electrode contact resistance R1 of diode D2, diode D3, the left end of the anode contact resistance R6 of diode D4, wherein, the anode of diode D5 is connected with resistance R1 left end, the negative electrode of diode D5 is connected with the left end of resistance R6, diode D5 is fly-wheel diode, the left end of the left end of resistance R1 contact resistance R3 simultaneously, the diode circuit output voltage formed at resistance R1 left end and resistance R6 left end is Ui, in work, alternating current enters internal body diodes by VIN port, respectively by diode D1, diode D4 and diode D2, the brachium pontis that diode D3 forms, at resistance R1 left end, resistance R6 left end forms the direct current of pulsation, diode D5 act as afterflow, when the load of this rectifier bridge is inductive load, diode D5 plays a role, inductive load is the load containing coil, and coil is a very large inductance, it can with the form store electrical energy in magnetic field, a large amount of magnetic field is stored when its work, when the coil is de-energized, at this moment magnetic field in coil will produce inverse electromotive force voltage, higher other elements being easy to puncture in line loop of this voltage, if the fly-wheel diode that in circuit, access one is just in time consistent with inverse electromotive force direction, so inverse electromotive force just can be neutralized in the form of electric current by fly-wheel diode thus protect other components and parts, use safety, stable, the structure of described homophase input amplifier is that the right-hand member of resistance R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of operational amplifier A 1 is connected with the output of operational amplifier A 1, and the output of operational amplifier A 1 connects the positive port of VOUT by resistance R2, the concrete structure of described anti-phase input amplifier is that the right-hand member of resistance R3 is connected with the inverting input of operational amplifier A 2, the inverting input of operational amplifier A 2 is connected with the output of operational amplifier A 2 through resistance R4, and the output of operational amplifier A 2 connects the positive port of VOUT by resistance R5, and the right-hand member of the in-phase input end contact resistance R6 of operational amplifier A 2, and the in-phase input end of operational amplifier A 2 connects VOUT negative terminal mouth, the in-phase input end ground connection simultaneously of operational amplifier A 2, output voltage between the positive port of described VOUT, VOUT negative terminal mouth is Uo, described homophase input amplifier (or voltage follower), its output voltage is U1, described reverse input amplifier, its output voltage is U2, in work, obtain output voltage Uo, if resistance R2 resistance equals resistance R5, then Uo=U1+U2 according to voltage superposition principle output voltage U1, output voltage U2 respectively by resistance R2, resistance R5 superposition, when input signal is at T0 ~ T1, Ui >=0, the output voltage U1=Ui of operational amplifier A 1, and the output voltage U2=0 of operational amplifier A 2, Uo=U1, when input signal is at T1 ~ T2, Ui≤0, the output voltage U1=0 of operational amplifier A 1, resistance R3 resistance equals R4, then the output voltage U2=-Ui of operational amplifier A 2, Uo=U2, the utility model integral transformation precision is high, adopts full linear circuit, and minimum commutation voltage can be low to 0.01V.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (1)
1., based on a full-wave rectifying circuit for diode group, comprise diode group circuit, homophase input amplifier and anti-phase input amplifier, it is characterized in that, described diode group circuit comprises five diodes, wherein the anode of diode D1 and all positive with the VIN port of the negative electrode of diode D3 are connected, the anode of diode D2 is all connected with VIN negative terminal mouth with the negative electrode of diode D4, described diode D1, the left end of the negative electrode contact resistance R1 of diode D2, diode D3, the left end of the anode contact resistance R6 of diode D4, wherein, the anode of diode D5 is connected with resistance R1 left end, the negative electrode of diode D5 is connected with the left end of resistance R6, diode D5 is fly-wheel diode, the left end of the left end of resistance R1 contact resistance R3 simultaneously, diode circuit output voltage is formed at resistance R1 left end and resistance R6 left end, the structure of described homophase input amplifier is that the right-hand member of resistance R1 is connected with the in-phase input end of operational amplifier A 1, the inverting input of operational amplifier A 1 is connected with the output of operational amplifier A 1, and the output of operational amplifier A 1 connects the positive port of VOUT by resistance R2, the concrete structure of described anti-phase input amplifier is that the right-hand member of resistance R3 is connected with the inverting input of operational amplifier A 2, the inverting input of operational amplifier A 2 is connected with the output of operational amplifier A 2 through resistance R4, and the output of operational amplifier A 2 connects the positive port of VOUT by resistance R5, and the right-hand member of the in-phase input end contact resistance R6 of operational amplifier A 2, and the in-phase input end of operational amplifier A 2 connects VOUT negative terminal mouth, the in-phase input end ground connection simultaneously of operational amplifier A 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644377.0U CN205081701U (en) | 2015-08-21 | 2015-08-21 | Full wave rectifier circuit based on diode cluster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644377.0U CN205081701U (en) | 2015-08-21 | 2015-08-21 | Full wave rectifier circuit based on diode cluster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081701U true CN205081701U (en) | 2016-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520644377.0U Active CN205081701U (en) | 2015-08-21 | 2015-08-21 | Full wave rectifier circuit based on diode cluster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205081701U (en) |
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2015
- 2015-08-21 CN CN201520644377.0U patent/CN205081701U/en active Active
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