CN207460567U - Well lighting circuit - Google Patents
Well lighting circuit Download PDFInfo
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- CN207460567U CN207460567U CN201721340288.2U CN201721340288U CN207460567U CN 207460567 U CN207460567 U CN 207460567U CN 201721340288 U CN201721340288 U CN 201721340288U CN 207460567 U CN207460567 U CN 207460567U
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Abstract
The utility model discloses a kind of well lighting circuit, including：AC power, voltage reduction module, rectification module, filter module and load blocks；The first end of AC power is connected with the input port of voltage reduction module, and the second end of AC power is connected with the first input port of rectification module；The output port of voltage reduction module is connected with the second input port of rectification module, and voltage reduction module is used to control the electric current of load blocks；First output port of rectification module is connected with the first end of the first end of filter module and institute's load blocks, and rectification module is used to convert alternating current to direct current；The second end of filter module is connected with the second output terminal mouth of rectification module and the second end of load blocks.The utility model embodiment provides a kind of well lighting circuit, by simple circuit element, substitutes expensive power module, reduces cost of manufacture, has haved the function that through decompression, rectification and current limliting.
Description
Technical field
The utility model embodiment is related to well lighting technical field more particularly to a kind of well lighting circuit.
Background technology
Existing elevator shaft, before lighting apparatus is not turned on, since hoistway is the space of a relative closure, outside
Boundary's light almost seldom into hoistway, causes as dark as a stack of black cats in hoistway.Therefore well lighting carries out elevator for service personnel
Working service has very important effect.
At present by mains AC be converted into well lighting can direct current mostly expensive ac/dc electricity
Source module is unfavorable for saving the cost of manufacture of elevator.
Utility model content
In view of this, the utility model embodiment provides a kind of well lighting circuit, to substitute expensive power supply
Module, while cost of manufacture is reduced, have the function that through decompression, rectification and current limliting
The utility model provides a kind of well lighting circuit, including：
AC power, voltage reduction module, rectification module, filter module and load blocks；
The first end of the AC power is connected with the input port of the voltage reduction module, the second end of the AC power
It is connected with the first input port of the rectification module；
The output port of the voltage reduction module is connected with the second input port of the rectification module, and the voltage reduction module is used
In the electric current for controlling the load blocks；
The first of first output port of the rectification module and the first end of the filter module and institute's load blocks
End is connected, and the rectification module is for converting alternating current to direct current, so that the direct current provides for the load blocks
DC power supply；
The of the second output terminal mouth of the second end of the filter module and the rectification module and the load blocks
Two ends are connected.
Optionally, fuse is further included, the first end of the fuse is connected with the second end of the alternating current, described
The second end of fuse is connected with the input port of the voltage reduction module.
Optionally, protection module, the first output of the input port of the protection module and the rectification module are further included
Port is connected, and the output port of the protection module is connected with the first end of the load blocks.
Optionally, the protection module include the first diode and first resistor, the first end of first diode with
First output port of the rectification module is connected, the second end of first diode and the first end phase of the first resistor
Even, the second end of the first resistor is connected with the first end of the load blocks.
Optionally, the load blocks include at least one light emitting diode.
Optionally, the voltage reduction module includes at least one first capacitance and second resistance, first capacitance and described
By being connected in parallel between second resistance.
Optionally, first capacitance is polarity free capacitor.
Optionally, the rectification module includes 4 diodes, is respectively the second diode, the 3rd diode, the four or two pole
Pipe and the 5th diode, the cathode of the anode of second diode and the 3rd diode as the rectification module the
One input port；
The anode of 4th diode is connected with the cathode of the 5th diode, and second as the rectification module
Input port；
The cathode of second diode is connected with the cathode of the 5th diode, and first as the rectification module
Output port；
The anode of 3rd diode is connected with the anode of the 4th diode, and second as the rectification module
Output port.
Optionally, the filter module include the second capacitance and 3rd resistor, the first end of second capacitance with it is described
First output port of the first end of 3rd resistor and the rectification module is connected；
The second end of second capacitance, the second end of the 3rd resistor and the second output terminal mouth of the rectification module
And the second end of the load blocks is connected.
Optionally, second capacitance is polar capacitor.
The utility model load blocks are connected by voltage reduction module, rectification module, filter module with AC power, instead of
Expensive power module while reducing cost of manufacture, has reached and has limited electric current and dynamically distributes by voltage reduction module
The effect of voltage reduction module and load blocks both end voltage, rectification module and filter module complete mains AC and change into direct current
The effect of electricity.
Description of the drawings
Fig. 1 is a kind of structure diagram for well lighting circuit that the utility model embodiment one provides；
The structure diagram for another well lighting circuit that Fig. 2 the utility model embodiments one provide；
Fig. 3 is a kind of structure diagram for well lighting circuit that the utility model embodiment two provides.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant with the utility model rather than entire infrastructure are illustrated only for ease of description, in attached drawing.
Embodiment one
Fig. 1 is a kind of structure diagram for well lighting circuit that the utility model embodiment one provides.It, should with reference to Fig. 1
Circuit includes：AC power 100, voltage reduction module 200, rectification module 300, filter module 400 and load blocks 500.Alternating current
The first end 101 in source 100 is connected with the input port 201 of voltage reduction module 200, second end 102 and the rectification mould of AC power 100
The first input port 301 of block 300 is connected.The output port 202 of voltage reduction module 200 and the second input terminal of rectification module 300
Mouth 302 is connected, and voltage reduction module 200 is used to control the electric current of load blocks 500.First output port 303 of rectification module 300 with
The first end 401 of filter module 400 and the first end 501 of load blocks 500 are connected, and rectification module 300 is used for alternating current
Direct current is converted into, so that direct current provides DC power supply for load blocks 500.The second end 402 of filter module 400 and rectification
The second output terminal mouth 304 of module 300 and the second end 502 of load blocks 500 are connected.
In the present embodiment, AC power 100 is mains AC, and the first end 101 of AC power 100 is firewire, electricity
Position is 220V, and the second end 102 of AC power 100 is zero curve, and current potential is 0V, thus the first end 101 of AC power 100 and
Potential difference between second end 102 is 220V, i.e., AC power 100 can provide the alternating current of 220V.
Voltage reduction module 200 is connected with the first end firewire of AC power 100, the reason is that, not having current potential on zero curve.
Rectification module 300 is used to the alternating current that AC power 100 exports being converted into direct current, filter module 400 with it is whole
Flow module 300 is connected, if the alternating current that AC power 100 exports have passed through rectification module 300, also remaining has that some are a small amount of
Alternating current, then filter module can consume the alternating current of remaining.
Load blocks 500 for illumination can be illustratively incandescent lamp and LED light etc. in elevator shaft.
In the prior art, it is direct current to power supply of the hoistway for the load of illumination to provide, then the acquisition of direct current can
It is electrically connected with the power module for turning direct current by DC power supplier or by exchange with mains, both connections
The DC power supplier used in mode either AC/DC power Module Price is costly.The utility model embodiment
A kind of well lighting circuit, load blocks are connected by voltage reduction module, rectification module, filter module with AC power, instead of
Expensive power module while reducing cost of manufacture, has reached and has limited electric current and dynamically distributes by voltage reduction module
The effect of voltage reduction module and load blocks both end voltage, rectification module and filter module complete mains AC and change into direct current
The effect of electricity.
Based on the above technical solutions, referring to Fig. 2, which further includes fuse 600, fuse
600 first end 601 is connected with the first end 101 of AC power 100, second end 602 and the voltage reduction module 200 of fuse 600
Input port 201 be connected.
Optionally, protection module 700, the input port 701 of protection module 700 and the 300 first of rectification module are further included
Output port 303 is connected, and the output port 702 of protection module 700 is connected with the first end 501 of load blocks 500.
Fuse 600, also referred to as fuse when circuit malfunctions or exception, are constantly raised with electric current, and
And raised electric current is it is possible that damage some important devices in circuit or valuable device, it is also possible to burn circuit and even cause
Fire.If fuse is correctly disposed in circuit, then, fuse will be increased to certain height and one in current anomaly
When determining, itself fusing cut-out electric current, so as to play the role of protecting circuit safety operation.
Embodiment two
Fig. 3 is a kind of structure diagram for well lighting circuit that the utility model embodiment two provides, in above-mentioned implementation
On the basis of example, the present embodiment is to the voltage reduction module 200, rectification module 300, filter module 400, negative in well lighting circuit
It carries module 500 and protection module 700 to be refined, referring to Fig. 3, the first end of AC power is firewire L, second end zero
Line N.Protection module 700 includes the first diode D1 and first resistor R1, the first end (anode) of the first diode D1 and rectification
First output port 303 of module 300 is connected, the second end (cathode) of the first diode D1 and the first end phase of first resistor R1
Even, the second end of first resistor R1 is connected with the first end 501 of load blocks 500.Due to load blocks 500 can include it is multiple
Light emitting diode, and light emitting diode forward conduction, so setting protection module 700 herein, pass through the first diode D1's
Forward conduction characteristic, ensureing can be with normal luminous when being connected on light emitting diode under DC power supply positive and negative anodes.First resistor R1 is used for
Current limliting, the first diode D1 of protection are not burned.
It should be noted that the alternating current in the present embodiment is by voltage reduction module 200, rectification module 300, filter module
400th, after load blocks 500 and protection module 700, direct current is provided, the anode and cathode of direct current are connected on negative respectively
Carry the first end 501 of module 500 and second end 502.
Optionally, load blocks 500 include at least one light emitting diode D2, and illustratively, Fig. 3 is only to show one
Light emitting diode, but the utility model embodiment is not construed as limiting for the number of light emitting diode.It should be noted that load
Module 500 can also include incandescent lamp.
Optionally, voltage reduction module 200 includes at least one first capacitance C1 and second resistance R2, the first capacitance C1 and second
By being connected in parallel between resistance R2.Optionally, the first capacitance C1 is polarity free capacitor.Therefore voltage reduction module 200 directly with friendship
The firewire L in galvanic electricity source is connected, and what it is by the first capacitance C1 can be that the alternating current of positive half cycle can also be the alternating current of negative half period,
Therefore polarity free capacitor must be selected.Second resistance R2 is used for the discharge resistance of the first capacitance C1.
It should be noted that the operation principle of capacitance decompression is to be generated using capacitance under certain AC signal frequency
Capacitive reactance limits maximum operating currenbt, such as under the power frequency of 50Hz, capacitive reactance caused by the capacitance of 1 1uF is about 3180 Europe
Nurse.When the alternating voltage of 220V is added in the both ends of capacitance, then the maximum current for flowing through capacitance is about 70mA, although the capacitance flowed through
Electric current have 70mA, when not generating power consumption on capacitance.Because if capacitance is an ideal capacitance, then the electricity of capacitance is flowed through
It flows for imaginary part electric current, its institute's work is reactive power.According to this feature, if connected again on the capacitor of a 1uF
One resistance element, then the obtained voltage in resistance element both ends and the power that it is generated depend entirely on this resistance element
Characteristic.For example, the light bulb of a 110V/8W is connected with the capacitance of a 1uF, on the alternating voltage of 220V/50Hz is connected to,
Light bulb is lit, and sends normal brightness without being burned out.Because light bulb needed for electric current for 8W/110V=72mA, it with
Cut-off current characteristics caused by the capacitance of 1uF match.Similarly, the capacitance of the light bulb of 5W/65V and 1uF can also be connected on
On the alternating current of 220V/50Hz, light bulb equally can be lit, without being burned out.Because the operating current of the light bulb of 5W/65V
Also about 70mA.Therefore, capacitance decompression is actually to utilize capacitive reactance current limliting.And capacitance actually plays a limitation electric current and moves
State distributes capacitance and loads the role of both end voltage.
So in the present embodiment, voltage reduction module 200 can be born by two the first capacitance C1 to limit load blocks
Electric current.Rule of thumb formula (formula 1)：
C=14.5 × I (formula 1)
Wherein, C is that the equivalent capacity unit in voltage reduction module is uF, and I is the operating current of load blocks, unit mA.
Related practitioner can be rule of thumb weighed between the electric current in capacitance and load on voltage reduction module formula (formula 1)
Relation.
Optionally, rectification module 300 includes 4 diodes, is respectively the second diode D3, the 3rd diode D4, the 4th
Diode D5 and the 5th diode D6, the anode of the second diode D3 and the cathode of the 3rd diode D4 are as rectification module 300
First input port 301；The anode of 4th diode D5 and the cathode of the 5th diode D6 are connected, as rectification module 300
The second input port 302；The anode of 3rd diode D4 and the anode of the 4th diode D5 are connected, and as rectification module
Two output ports 304；The cathode of second diode D3 and the cathode of the 5th diode D6 are connected, and as rectification module 300
One output port 303.
Optionally, filter module 400 includes the second capacitance C2 and 3rd resistor R3, the first end and the 3rd of the second capacitance C2
The first end of resistance R3 and the first output port 303 of rectification module 300 are connected；The second end of second capacitance C2, the 3rd electricity
The second end of resistance R3 is connected with the second output terminal mouth 304 of rectification module 300 and the second end 502 of load blocks 500.
Optionally, the second capacitance C2 is polar capacitor.The first end of second capacitance C2 is anode (+), the second capacitance C2's
Second end is cathode (-).The alternating current that have passed through remaining after rectification module is positive half cycle, due to the of the second capacitance C2
One end is connected with the first output port 303 of rectification module 300, the second end of the second capacitance C2 and the second of rectification module 300
Output port 304 is connected, and the voltage of the second capacitance C2 first ends is higher than the voltage of the second capacitance C2 second ends.3rd resistor R3 is used
In with the second capacitance C2 form discharge loop.
A kind of well lighting circuit that the utility model embodiment provides, by simple capacitance, resistance and diode,
It constitutes with antihypertensive effect, rectified action, filter action and the lighting circuit of protective effect, by mains AC, conversion
For the direct current that hoistway load can use, reach and electric current and dynamically distributes decompression mould are limited by the capacitance in voltage reduction module
The effect of block and load blocks both end voltage, rectification module and filter module complete the work that mains AC changes into direct current
With instead of expensive power module in the prior art, reducing cost of manufacture.
Note that it above are only the preferred embodiment of the utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious variation is readjusted, be combined with each other and substituted without departing from the scope of protection of the utility model.Therefore, although passing through
Above example is described in further detail the utility model, but the utility model be not limited only to more than implement
Example in the case where not departing from the utility model design, can also include other more equivalent embodiments, and the utility model
Scope is determined by scope of the appended claims.
Claims (10)
1. a kind of well lighting circuit, which is characterized in that including：
AC power, voltage reduction module, rectification module, filter module and load blocks；
The first end of the AC power is connected with the input port of the voltage reduction module, the second end of the AC power and institute
The first input port for stating rectification module is connected；
The output port of the voltage reduction module is connected with the second input port of the rectification module, and the voltage reduction module is used to control
Make the electric current of the load blocks；
First output port of the rectification module and the first end of the filter module and the first end phase of institute's load blocks
Even, the rectification module is for converting alternating current to direct current, so that the direct current provides direct current for the load blocks
Power supply；
The second end of the filter module and the second output terminal mouth of the rectification module and the second end of the load blocks
It is connected.
2. circuit according to claim 1, which is characterized in that
Fuse is further included, the first end of the fuse is connected with the second end of the alternating current, and the of the fuse
Two ends are connected with the input port of the voltage reduction module.
3. circuit according to claim 1, which is characterized in that
Protection module is further included, the input port of the protection module is connected with the first output port of the rectification module, institute
The output port for stating protection module is connected with the first end of the load blocks.
4. circuit according to claim 3, which is characterized in that
The protection module includes the first diode and first resistor, first end and the rectification module of first diode
The first output port be connected, the second end of first diode is connected with the first end of the first resistor, described first
The second end of resistance is connected with the first end of the load blocks.
5. circuit according to claim 3, which is characterized in that
The load blocks include at least one light emitting diode.
6. circuit according to claim 1, which is characterized in that
The voltage reduction module includes at least one first capacitance and second resistance, between first capacitance and the second resistance
By being connected in parallel.
7. circuit according to claim 6, which is characterized in that
First capacitance is polarity free capacitor.
8. circuit according to claim 1, which is characterized in that
The rectification module includes 4 diodes, is respectively the second diode, the 3rd diode, the 4th diode and the five or two
First input end of the cathode of pole pipe, the anode of second diode and the 3rd diode as the rectification module
Mouthful；
The anode of 4th diode is connected with the cathode of the 5th diode, the second input as the rectification module
Port；
The cathode of second diode is connected with the cathode of the 5th diode, the first output as the rectification module
Port；
The anode of 3rd diode is connected with the anode of the 4th diode, the second output as the rectification module
Port.
9. circuit according to claim 1, which is characterized in that
The filter module includes the second capacitance and 3rd resistor, and the of the first end of second capacitance and the 3rd resistor
First output port of one end and the rectification module is connected；
The second end of second capacitance, the second end of the 3rd resistor and the rectification module second output terminal mouth and
The second end of the load blocks is connected.
10. circuit according to claim 9, which is characterized in that
Second capacitance is polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721340288.2U CN207460567U (en) | 2017-10-18 | 2017-10-18 | Well lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721340288.2U CN207460567U (en) | 2017-10-18 | 2017-10-18 | Well lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207460567U true CN207460567U (en) | 2018-06-05 |
Family
ID=62252743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721340288.2U Active CN207460567U (en) | 2017-10-18 | 2017-10-18 | Well lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207460567U (en) |
-
2017
- 2017-10-18 CN CN201721340288.2U patent/CN207460567U/en active Active
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