CN208125779U - It is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power - Google Patents
It is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power Download PDFInfo
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- CN208125779U CN208125779U CN201820728982.XU CN201820728982U CN208125779U CN 208125779 U CN208125779 U CN 208125779U CN 201820728982 U CN201820728982 U CN 201820728982U CN 208125779 U CN208125779 U CN 208125779U
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Abstract
The utility model relates to it is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power, the switch assembly converted between series connection and parallel connection for realizing first load group and second load group is connect with first load group and second load group including the first load group, the second load group connecting with first load group, and respectively；First load group is identical with the resistance value of second load group.Different, the resistance value that can be loaded by switch assembly convert resistance according to the height of input voltage guarantees the maximum utilization rate of ohmic load to keep power inconvenient.
Description
Technical field
The utility model relates to load circuit fields more particularly to one kind can high-low pressure switching proof load resistance receiving function
The constant load circuit of rate.
Background technique
As shown in Figure 1：In existing support structures schematic diagram, when 100 ohm of resistance selection, the power being able to bear is
2000 watts, when input voltage VIN+be 400V, switch S1 and S2 are connected, the power of a resistance consumption is 1600 watts
Spy, this when resistance there is no problem.
But when we increase voltage to 800V, then the power of an ohmically consumption is up to 6400 watts
Spy may cause damage then resistance cannot be born.
So we have to a resistance of connecting on resistance, as shown in Fig. 2, the function consumed on resistance each in this way
Rate just only has 1600 watts, certainly we can also by the ohmic load of Fig. 2 on the voltage that VIN+ is 400V, but this
Sample, band, which carries, will reduce one times, such as in Fig. 2, we are only a 800V and 400 general ohmic loads with 4 resistance, when
When 800V, it is 6400 watts that band, which carries, when voltage is 400V, just only 1600 watts.Therefore cause us to identical load
When input voltage height is different, the utilization rate of ohmic load is big without high pressure when voltage is low.
Utility model content
In order to solve the above-mentioned technical problem the utility model provides one kind can high-low pressure switching proof load resistance receiving function
The constant load circuit of rate.
The technical solution that the utility model solves above-mentioned technical problem is as follows：One kind can high-low pressure switching proof load resistance
The constant load circuit of power is born, including the first load group, the second load group connecting with first load group, Yi Jifen
It does not connect with first load group and second load group for realizing first load group and second load group
The switch assembly converted between series connection and parallel connection；First load group is identical with the resistance value of second load group.
The utility model has the beneficial effects that:Realize that the first load group and the second load group are being gone here and there by switch assembly
The conversion converted between connection and parallel connection, it is different according to the height of input voltage, it can be loaded by switch assembly convert resistance
Resistance value guarantee the maximum utilization rate of ohmic load to keep power inconvenient, when avoiding input voltage height different, load
The power of resistance is different, so that the utilization rate of ohmic load is big without high pressure when voltage is low.
Based on the above technical solution, the utility model can also do following improvement.
Further, first load group includes multiple first load units, and the multiple first load unit is mutually simultaneously
Connection；Second load group includes multiple second load units, and the multiple second load unit is parallel with one another；Described first is negative
The resistance value and quantity of carrier unit and second load unit are all the same.
Beneficial effect using above-mentioned further scheme be by the way that load group is divided into multiple load units, can be according to defeated
The size for entering voltage selects the quantity of load unit, and then adjusts the resistance value of load group, to be suitable for different voltages value.
Further, first load group includes m first load units, and second load group includes m institute
The second load unit is stated, m is the integer greater than 1；Wherein, first first load unit and first second load
Unit series connection, obtains the first branch；Second first load unit is connected with second second load unit, is obtained
Second branch；And so on, obtain m branch；
The first branch, the second branch ... the m branch is parallel with one another.
Further, first load unit and second load unit by load resistance and open switch series connection and
At.
Beneficial effect using above-mentioned further scheme is that load unit is connected in series by load resistance and open switch, is led to
Overregulate open switch, i.e., adjustable load unit quantity, and then adjust the resistance value of load so that resistance value adjust it is more convenient,
Flexibly.
Further, the open switch is SW-SPST.
Beneficial effect using above-mentioned further scheme is using SW-SPST as open switch, cheap, and use
It is convenient.
Further, the switch assembly includes the SW-DPDT for being separately connected power supply positive/negative, and with the SW-
The termination modules of DPDT connection；
The termination modules include the first terminals, the second terminals, third terminals, the 4th terminals；Described
One terminals connect first load group, and second terminals are separately connected first load group and second load
Group, the third terminals are hanging, and the 4th terminals are separately connected first terminals and first load group；Institute
It states the second load group and is also connected with the power cathode.
Beneficial effect using above-mentioned further scheme is to adjust the position of SW-DPDT by above-mentioned switch assembly,
The first load group can be adjusted and the second load group is series connection or parallel connection, entire switch block structure is simple, and uses
Effectively, convenient.
Detailed description of the invention
Fig. 1 is existing support structures schematic diagram；
Fig. 2 is another existing support structures schematic diagram；
Fig. 3 is the structural schematic diagram of the utility model；
Fig. 4 is another structural schematic diagram of the utility model.
In attached drawing, parts list represented by the reference numerals are as follows：
1, the first load group, the 11, first load unit, the 2, second load group, the 21, second load unit, 3, change-over switch
Component, the 31, first terminals, the 32, second terminals, 33, third terminals, the 34, the 4th terminals.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 3：The utility model embodiment provide one kind can high-low pressure switching proof load resistance bear power not
The load circuit of change, including the first load group 1, the second load group 2 being connect with the first load group 1, and it is negative with first respectively
What load group 1 and the connection of the second load group 2 were converted between series connection and parallel connection for realizing the first load group 1 and the second load group 2
Switch assembly 3；First load group 1 is identical with the resistance value of the second load group 2.
Specifically, the first load group 1 includes multiple first load units 11, and multiple first load units 11 are parallel with one another；
Second load group 2 includes multiple second load units 21, and multiple second load units 21 are parallel with one another；First load unit 11 with
The resistance value and quantity of second load unit 21 are all the same.
Specifically, the first load group 1 includes m the first load units 11, and the second load group 2 includes that m second load is single
21, m of member is the integer greater than 1；Wherein, first the first load unit 11 is connected with first the second load unit 21, is obtained
The first branch；Second the first load unit 11 is connected with second the second load unit 21, obtains second branch；Successively class
It pushes away, obtains m branch；
The first branch, second branch ... m branch is parallel with one another.
Specifically, the first load unit 11 and the second load unit 21 are connected in series by load resistance and open switch.
Preferably, open switch SW-SPST.
Specifically, switch assembly 3 includes the SW-DPDT for being separately connected power supply positive/negative, and is connected with SW-DPDT
The termination modules connect；
Wherein, termination modules include the first terminals 31, the second terminals 32, third terminals 33, the 4th terminals
34；First terminals 31 connect the first load group 1, and the second terminals 32 are separately connected the first load group 1 and the second load group 2,
Third terminals 33 are hanging, and the 4th terminals 34 are separately connected the first terminals 31 and the first load group 1；Second load group 2 is also
Connect power cathode.
In practical application scene, as shown in figure 3, being thrown on SW-DPDT, when the voltage of input is high voltage so that electric
Source VIN+ is connect with the first terminals 31, and power supply VIN- is connect with third terminals 33, so that first first load is single
Member 11 is connected with first the second load unit 21, obtains the first branch；Second the first load unit 11 and second second
Load unit 21 is connected, and second branch is obtained；And so on, obtain m branch；Wherein, the first branch, second branch ...
M branch is parallel with one another, to obtain the load of high value.
As shown in Figure 4：When the voltage of input is low-voltage, thrown under SW-DPDT, so that power supply VIN+ and the second terminals
32 connections, power supply VIN- are connect with the 4th terminals 34, so that multiple first load units 11 of the first load group 1 are mutual
Multiple second load units 21 of parallel connection, the second load group 2 are parallel with one another, and the first load group 1 and the second load group 2 are mutually simultaneously
Connection, to obtain the load of low resistance.
In the following, we are with input voltage 800V high pressure and 400V low pressure；First load unit 11 and the second load unit 21
Quantity be 2；For load resistance resistance value is 100 ohm.
In conjunction with Fig. 3：When input voltage VIN+be 800V, by switching toggle to top, in this way, being exactly 2 resistance R1
800V voltage, 100 ohm of resistance are born with R8 series connection, each resistance bears 1600 watts of power.
In conjunction with Fig. 4：When input voltage VIN+when 400V by switching toggle to lower section, be at this moment equivalent to each resistor coupled in parallel
To bear 400V voltage, 100 ohm of resistance, power that each resistance is born and 1600 watts.
It should be noted that above-mentioned working principle is not merely suitable for the first load unit 11 and the second load unit 21
When quantity is 2, according to above-mentioned working principle, and so on, it can pass through and adjust the first load unit 11 and the second load is single
The quantity of member 21, to be suitable for different high-low voltages.
In conclusion the load circuit can guarantee the receiving of each load resistance when input voltage high-low pressure switches
Power is constant, so that load resistance is avoided to bear excessive power in high input voltage and damage, when inputting low-voltage,
It is lower to bear power, and greatly reduces ohmic load utilization rate.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, all in the utility model
Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model
Within enclosing.
Claims (6)
1. one kind can high-low pressure switching proof load resistance bear the constant load circuit of power, which is characterized in that including first
Load group (1), the second load group (2) being connect with first load group (1), and respectively with first load group (1)
It connects with second load group (2) for realizing first load group (1) and second load group (2) in series connection and simultaneously
The switch assembly (3) converted between connection；First load group (1) is identical with the resistance value of second load group (2).
2. according to claim 1 it is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power,
It is characterized in that, first load group (1) includes multiple first load units (11), the multiple first load unit (11) phase
It is mutually in parallel；Second load group (2) includes multiple second load units (21), and the multiple second load unit (21) is mutual
It is in parallel；The resistance value and quantity of first load unit (11) and second load unit (21) are all the same.
3. according to claim 1 it is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power,
It is characterized in that, first load group (1) includes m first load units (11), and second load group (2) includes m
A second load unit (21), m are the integer greater than 1；Wherein, first first load unit (11) with first
Second load unit (21) series connection, obtains the first branch；Second first load unit (11) with described in second
Second load unit (21) series connection, obtains second branch；And so on, obtain m branch；
The first branch, the second branch ... the m branch is parallel with one another.
4. according to claim 2 it is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power,
It is characterized in that, first load unit (11) and second load unit (21) are connected by load resistance and open switch
It forms.
5. according to claim 4 it is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power,
It is characterized in that, the open switch is SW-SPST.
6. any one of -5 described one kind can the constant load of high-low pressure switching proof load resistance receiving power according to claim 1
Circuit, which is characterized in that the switch assembly (3) includes the SW-DPDT for being separately connected power supply positive/negative, and with institute
State the termination modules of SW-DPDT connection；
The termination modules include the first terminals (31), the second terminals (32), third terminals (33), the 4th terminals
(34)；First terminals (31) connect first load group (1), and second terminals (32) are separately connected described the
One load group (1) and second load group (2), vacantly, the 4th terminals (34) are respectively for the third terminals (33)
Connect first terminals (31) and first load group (1)；It is negative that second load group (2) is also connected with the power supply
Pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820728982.XU CN208125779U (en) | 2018-05-16 | 2018-05-16 | It is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820728982.XU CN208125779U (en) | 2018-05-16 | 2018-05-16 | It is a kind of can high-low pressure switching proof load resistance bear the constant load circuit of power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221646A (en) * | 2019-07-08 | 2019-09-10 | 上海文顺电器有限公司 | A kind of output power and the constant method and device of electric current of holding load |
| CN113916733A (en) * | 2020-07-09 | 2022-01-11 | 北京智感度衡科技有限公司 | Sensor and particulate matter detection device |
| CN116799803A (en) * | 2023-08-28 | 2023-09-22 | 广东省洛仑兹技术股份有限公司 | AC power distribution method compatible with multiple power grid system inputs |
-
2018
- 2018-05-16 CN CN201820728982.XU patent/CN208125779U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221646A (en) * | 2019-07-08 | 2019-09-10 | 上海文顺电器有限公司 | A kind of output power and the constant method and device of electric current of holding load |
| CN113916733A (en) * | 2020-07-09 | 2022-01-11 | 北京智感度衡科技有限公司 | Sensor and particulate matter detection device |
| CN116799803A (en) * | 2023-08-28 | 2023-09-22 | 广东省洛仑兹技术股份有限公司 | AC power distribution method compatible with multiple power grid system inputs |
| CN116799803B (en) * | 2023-08-28 | 2024-01-12 | 广东省洛仑兹技术股份有限公司 | AC power distribution method compatible with multiple power grid system inputs |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20210516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |