CN207662956U - It is a kind of to utilize LC concussion detection zero circuits - Google Patents
It is a kind of to utilize LC concussion detection zero circuits Download PDFInfo
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- CN207662956U CN207662956U CN201820013828.4U CN201820013828U CN207662956U CN 207662956 U CN207662956 U CN 207662956U CN 201820013828 U CN201820013828 U CN 201820013828U CN 207662956 U CN207662956 U CN 207662956U
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Abstract
The utility model is provided a kind of shaken using LC and detects zero circuit, including inductance L1, capacitance C1, resistance R1, triode Q1, resistance R2 and power module；The one end inductance L1 is grounded, and the other end passes sequentially through capacitance C1, resistance R1 is connect with the base stage of triode Q1；The collector of triode Q1 is connect with the VCC power supplys that power module exports by resistance R2；The emitter of triode Q1 is grounded；Zero detection microcontroller is connect with the collector of triode Q1；Alternating current fire wire is connect with power module；Alternating current zero curve is connect across inductance L1 with power module.It is provided by the utility model to utilize LC concussion detection zero circuits, oscillating circuit is constituted by the inductance L1 and capacitance C1 that are arranged in zero curve coil, the square wave consistent with mains frequency is manufactured in inductance L1, and the function of zero passage detection is realized under the collective effect of triode Q1, capacitance C1, resistance R1 and resistance R2.
Description
Technical field
It is the utility model is related to zero-detection circuit field, more particularly to a kind of to utilize LC concussion detection zero circuits.
Background technology
Zero detection refers in AC system, when waveform is converted from positive half cycle to negative half period, when by zero-bit, is
The detection that system is made, can make switching circuit or frequency detecting.In the circuit design of small household appliances, capture alternating current usually may require that
The zero of sine wave, the driving elements such as cooperation thyristor complete the intelligent control to heat-generating pipe, motor etc..Existing zero detection
Method is that high pressure is assigned to single-chip I/O mouth by partial pressure device, and long-term high-pressure work be easy to cause partial pressure device damage, makes
It can not work at complete machine；Another pin zero-point detecting method is to be worked by isolating devices such as optocouplers, but optocoupler causes circuit body again
The problems such as product increases, cost increases.
Utility model content
To solve the problems, such as to mention in above-mentioned background technology, the utility model provides a kind of electric using LC concussion detection zeros
Road, including inductance L1, capacitance C1, resistance R1, triode Q1, resistance R2 and power module；Wherein：
The one end the inductance L1 is grounded, and the other end passes sequentially through capacitance C1, resistance R1 is connect with the base stage of triode Q1；Three
The collector of pole pipe Q1 is connect with the VCC power supplys that power module exports by resistance R2；The emitter of triode Q1 is grounded；Zero
Detection microcontroller is connect with the collector of triode Q1；
Alternating current fire wire is connect with power module；Alternating current zero curve is connect across the inductance L1 with power module.
Further, the alternating current zero curve forms coil by coiling；The inductance L1 is set in zero curve coil.
Further, the power module include resistance R3, resistance R4, capacitance C2, capacitance C3, capacitance C4, diode D1,
Diode D2 and voltage-stabiliser tube ZD1；Wherein：
The one end the resistance R3 is connect with alternating current fire wire, and the other end passes through resistance R4 and capacitance C2 and diode D1 respectively
Cathode connected with the anode of diode D2；The cathode of the diode D2, capacitance C3 anodes, voltage-stabiliser tube ZD1 cathode with
The one end capacitance C4 connects, and exports VCC power supplys；The alternating current zero curve passes through anode, the electricity of inductance L1 and the diode D1
Hold the cathode of C3, the anode and capacitance C4 other end grounding connections of voltage-stabiliser tube ZD1.
Further, the triode Q1 is NPN type.
Further, the capacitance of the capacitance C1 is 0.1 μ F；The inductance value of inductance L1 is 3mh；Resistance R1 and resistance R2
Model be 0805, resistance value be 10K, precision be 5%；The model 2n5551 of triode Q1.
Further, the resistance value of the resistance R3 be 47 Ω, precision 5%, rated power 0.5W；The model of resistance R4
It is 1M Ω for 1206, resistance value, precision 5%；The 0.47 μ F/400V of model of capacitance C2；Diode D1's and diode D2
Model is 1N4007；The model 16V220 μ F of capacitance C3；The voltage stabilizing value of voltage-stabiliser tube ZD1 is 4.7V；The capacitance of capacitance C4
For 0.1 μ F.
It is provided by the utility model using LC concussion detection zero circuits, by the inductance L1 that is arranged in zero curve coil with
Capacitance C1 constitutes oscillating circuit, the square wave consistent with mains frequency is manufactured in inductance L1, in triode Q1, capacitance C1, resistance
The function of zero passage detection is realized under the collective effect of R1 and resistance R2；By the isolated form structure design of zero curve and inductance L1,
Keep circuit safer；Also, other additional isolating devices need not be added in circuit, reduce circuit volume, are saved
The production cost of circuit.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the circuit diagram provided by the utility model that detection zero circuit is shaken using LC.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to
The range of the utility model protection.
In the description of the present invention, it should be noted that the similar word such as term " connection " or " connected " is not
The connection with physics or machinery is limited, but may include electrical connection, light connects etc., either directly or indirectly
's.
The utility model embodiment is provided a kind of shaken using LC and detects zero circuit, including inductance L1, capacitance C1, resistance
R1, triode Q1, resistance R2 and power module；Wherein：
The one end the inductance L1 is grounded, and the other end passes sequentially through capacitance C1, resistance R1 is connect with the base stage of triode Q1；Three
The collector of pole pipe Q1 is connect with the VCC power supplys that power module exports by resistance R2；The emitter of triode Q1 is grounded；Zero
Detection microcontroller (ends Port) is connect with the collector of triode Q1；
Alternating current fire wire is connect with power module；Alternating current zero curve is connect across the inductance L1 with power module.
Preferably, the alternating current zero curve forms coil by coiling；The inductance L1 is set in zero curve coil.
When it is implemented, alternating current fire wire is directly connect with power module input terminal；Alternating current zero curve is formed by coiling
Coil, after inductance L1 is vertically set in zero curve coil, alternating current zero curve is connect with power module input terminal；When alternating current zero curve
When interior logical electric main, oscillating circuit is constituted with the connection structure of inductance L1 and with capacitance C1 by zero curve coil, passes through zero
The electric field changed in line coil generates changing magnetic field, then is generated on inductance L1 by changing magnetic field consistent with mains frequency
50HZ square wave；So as to so that triode Q1 is overturn 2 times every 20 milliseconds；To realize the function of zero passage detection；Zero curve
By connecting power module input terminal after inductance L1, zero-detection circuit will be made to work by power module outlet
In VCC power inputs to resistance R2, ensure the normal work of entire circuit.
What the utility model embodiment provided detects zero circuit using LC concussions, by the way that the electricity in zero curve coil is arranged
Feel L1 and capacitance C1 and constitute oscillating circuit, the square wave consistent with mains frequency is manufactured in inductance L1, in triode Q1, capacitance
The function of zero passage detection is realized under the collective effect of C1, resistance R1 and resistance R2；Pass through the isolated form knot of zero curve and inductance L1
Structure designs, and keeps circuit safer；Also, other additional isolating devices need not be added in circuit, reduce circuit volume,
Convenient for the miniaturization of product, the production cost of circuit has been saved.
Preferably, the power module includes resistance R3, resistance R4, capacitance C2, capacitance C3, capacitance C4, diode D1, two
Pole pipe D2 and voltage-stabiliser tube ZD1；Wherein：
The one end the resistance R3 is connect with alternating current fire wire, and the other end passes through resistance R4 and capacitance C2 and diode D1 respectively
Cathode connected with the anode of diode D2；The cathode of the diode D2, capacitance C3 anodes, voltage-stabiliser tube ZD1 cathode with
The one end capacitance C4 connects, and exports VCC power supplys；The alternating current zero curve passes through anode, the electricity of inductance L1 and the diode D1
Hold the cathode of C3, the anode and capacitance C4 other end grounding connections of voltage-stabiliser tube ZD1.
When it is implemented, to ensure the normal work of zero-detection circuit, need through power supply provided by the utility model
Module；Resistance R3, resistance R4 and capacitance C2 form capacitance-resistance voltage reduction circuit；Diode D1, diode D2 and capacitance C3 constitute filtering
Rectification circuit；Voltage-stabiliser tube ZD1 constitutes regulator circuit with capacitance C4；Pass through resistance R3, resistance R4, capacitance C2, capacitance C3, capacitance
The collective effect of C4, diode D1, diode D2 and voltage-stabiliser tube ZD1 enable circuit output to ensure that zero-detection circuit is normal
The VCC power supplys of work.
Preferably, the triode Q1 is NPN type.
Preferably, the capacitance of the capacitance C1 is 0.1 μ F；The inductance value of inductance L1 is 3mh；Resistance R1's and resistance R2
It is 10K, precision is 5% that model, which is 0805, resistance value,；The model 2n5551 of triode Q1.
Preferably, the resistance value of the resistance R3 be 47 Ω, precision 5%, rated power 0.5W；The model of resistance R4
1206, resistance value be 1M Ω, precision 5%；The 0.47 μ F/400V of model of capacitance C2；The type of diode D1 and diode D2
Number it is 1N4007；The 220 μ F of model 16V of capacitance C3；The voltage stabilizing value of voltage-stabiliser tube ZD1 is 4.7V；The capacitance of capacitance C4 is
0.1μF。
Although more herein used such as capacitance, inductance, resistance, triode, diode, voltage-stabiliser tube, power supply mould
The terms such as block, but it does not preclude the possibility of using other terms.The use of these items is only for more easily describing and
Explain the essence of the utility model；Being construed as any one of the additional limitations all is disagreed with the spirit of the present invention
's.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (6)
1. a kind of utilizing LC concussion detection zero circuits, which is characterized in that including inductance L1, capacitance C1, resistance R1, triode
Q1, resistance R2 and power module；Wherein：
The one end the inductance L1 is grounded, and the other end passes sequentially through capacitance C1, resistance R1 is connect with the base stage of triode Q1；Triode
The collector of Q1 is connect with the VCC power supplys that power module exports by resistance R2；The emitter of triode Q1 is grounded；Zero detects
Microcontroller is connect with the collector of triode Q1；
Alternating current fire wire is connect with power module；Alternating current zero curve is connect across the inductance L1 with power module.
2. according to claim 1 utilize LC concussion detection zero circuits, it is characterised in that：The alternating current zero curve passes through
Coiling forms coil；The inductance L1 is set in zero curve coil.
3. according to claim 2 utilize LC concussion detection zero circuits, it is characterised in that：The power module includes electricity
Hinder R3, resistance R4, capacitance C2, capacitance C3, capacitance C4, diode D1, diode D2 and voltage-stabiliser tube ZD1；Wherein：
The one end the resistance R3 is connect with alternating current fire wire, and the other end passes through the moon of resistance R4 and capacitance C2 and diode D1 respectively
Pole is connected with the anode of diode D2；The cathode of the diode D2, capacitance C3 anodes, voltage-stabiliser tube ZD1 cathode and capacitance
The one end C4 connects, and exports VCC power supplys；The alternating current zero curve passes through anode, the capacitance C3 of inductance L1 and the diode D1
Cathode, voltage-stabiliser tube ZD1 anode and capacitance C4 other end grounding connections.
4. according to claim 3 utilize LC concussion detection zero circuits, it is characterised in that：The triode Q1 is NPN
Type.
5. according to claim 4 utilize LC concussion detection zero circuits, it is characterised in that：The capacitance of the capacitance C1
For 0.1 μ F；The inductance value of inductance L1 is 3mh；The model of resistance R1 and resistance R2 are that 0805, resistance value is that 10K, precision are equal
It is 5%；The model 2n5551 of triode Q1.
6. according to claim 5 utilize LC concussion detection zero circuits, it is characterised in that：The resistance value of the resistance R3 is
47 Ω, precision 5%, rated power 0.5W；Model 1206, the resistance value of resistance R4 be 1M Ω, precision 5%；Capacitance
The 0.47 μ F/400V of model of C2；The model of diode D1 and diode D2 are 1N4007；The model 16V of capacitance C3
220μF；The voltage stabilizing value of voltage-stabiliser tube ZD1 is 4.7V；The capacitance of capacitance C4 is 0.1 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820013828.4U CN207662956U (en) | 2018-01-02 | 2018-01-02 | It is a kind of to utilize LC concussion detection zero circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820013828.4U CN207662956U (en) | 2018-01-02 | 2018-01-02 | It is a kind of to utilize LC concussion detection zero circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207662956U true CN207662956U (en) | 2018-07-27 |
Family
ID=62943371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820013828.4U Active CN207662956U (en) | 2018-01-02 | 2018-01-02 | It is a kind of to utilize LC concussion detection zero circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207662956U (en) |
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2018
- 2018-01-02 CN CN201820013828.4U patent/CN207662956U/en active Active
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| GR01 | Patent grant | ||
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Denomination of utility model: A zero detection circuit using LC oscillation Effective date of registration: 20211105 Granted publication date: 20180727 Pledgee: Xiamen Huli District Financing Guarantee Co., Ltd Pledgor: Xiamen Xinyang Technology Co., Ltd Registration number: Y2021980011992 |