CN112099558A - Load regulation method - Google Patents
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- CN112099558A CN112099558A CN202010745121.4A CN202010745121A CN112099558A CN 112099558 A CN112099558 A CN 112099558A CN 202010745121 A CN202010745121 A CN 202010745121A CN 112099558 A CN112099558 A CN 112099558A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
Abstract
The invention provides a load adjusting method, wherein a voltage input end of a load box is connected with a plurality of load resistors in parallel, the power or current or resistance value of each load resistor is preset according to a calculation formula, each load resistor is sequentially arranged and connected to the voltage input end according to the power or current or resistance value of each load resistor, and the load resistors can be combined at will to flexibly adjust the whole load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode. The invention has the beneficial effects that: the regulation of various loads in the load box can be flexibly combined, so that the output power or current or resistance value can meet the requirements of users; the load of the load box can be adjusted and combined more conveniently, and the cost of load design and manufacture is saved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of load box load regulation, in particular to a load regulation method.
[ background of the invention ]
The current market adjustable load adjusting mode comprises the following steps: the load is adjusted by utilizing a slide rheostat or a disc resistor, the two load adjusting modes only adjust the resistance value of the resistor, and the adjusting process is relatively slow; and the gear setting of the adjustable load is unreasonable, and the combination switch is too many. For example, 20A current is adjustable, the minimum step is 1A, the conventional setting method is to combine 20 gears of 1A, 20 switches are needed, if the power or current to be adjusted is larger, more gears are needed to realize, the adjusting mode is complicated and the manufacturing cost is high.
[ summary of the invention ]
The invention aims to solve the problems that a flexible regulation and combination mode aiming at the load of a load box is lacked in the market at present, and the following adjustable load regulation modes are mainly applied: when the sliding rheostat or the disc resistor is used for adjustment, the resistance value of the resistor can be adjusted only, and the adjustment process is slow; the gear setting of the adjustable load is unreasonable, the number of combined switches is too large, the adjusting mode is complex and the manufacturing cost is high; and a load regulation method is provided.
The invention is realized by the following technical scheme: a load adjusting method is characterized in that a voltage input end of a load box is connected with a plurality of load resistors in parallel, the power or current or resistance value of each load resistor is preset according to a calculation formula, each load resistor is sequentially arranged and connected to the voltage input end according to the power or current or resistance value of each load resistor, and the load resistors can be combined at will to flexibly adjust the whole load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Further, the power or current or resistance value of each load resistor arranged in sequence can be set according to the following first calculation formula:
“R1＝a*1*100；R2＝a*2*100；R3＝a*2*100；R4＝a*5*100；R5＝a*1*101；R6＝a*2*101；R7＝a*2*101；R8＝a*5*101；R9＝a*1*102；R10＝a*2*102；R11＝a*2*102；R12＝a*5*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*2*10n；Rm+3＝a*5*10n"; where a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is a positive integer no less than 1, and n is (m +3)/4-1, and "R1, R2, R3 … … Rm + 3" represents the load connected in series with each shift switch, and is calculated as power (in watts, W), current (in amperes, a), or resistance (in ohms, Ω), and is actually used according to the current (in amperes, Ω)The power or current or resistance value to be adjusted is adjusted to each gear switch, so that the combination of any multiple power or current or resistance values is realized, and the purpose of adjusting the load power or current or resistance value in the load box circuit is achieved.
Further, the power or current or resistance value of each load resistor arranged in sequence may be set according to the following second calculation formula:
“R1＝a*1*100；R2＝a*2*100；R3＝a*3*100；R4＝a*4*100；R5＝a*1*101；R6＝a*2*101；R7＝a*3*101；R8＝a*4*101；R9＝a*1*102；R10＝a*2*102；R11＝a*3*102；R12＝a*4*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*3*10n；Rm+3＝a*4*10n"; in the formula, a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is (m +3)/4-1, and "R1, R2, R3 … … Rm + 3" is a load connected in series with each gear switch, and is calculated by power (in watt, in W) or current (in ampere, in a), or by resistance value (in ohm, in Ω), and each gear switch is regulated according to the power or current or resistance value to be regulated during actual use, so that any combination of various power or current or resistance values is realized, and the purpose of regulating the load power or current or resistance value in a load box circuit is achieved.
Further, the power or current or resistance value of each load resistor arranged in sequence can be set according to the following third calculation formula:
“R1＝a*20；R2＝a*21；R3＝a*22……Rm＝a*2n”；
wherein a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is a positive integer no less than 1, and n is m-1; the R1, R2, R3 … … Rm are loads connected in series with each range switch, and are calculated by power (unit watt, denoted as W) or current (unit ampere, denoted as a), or calculated by resistance value (unit ohm, denoted as Ω), and each range switch is adjusted according to the power or current or resistance value to be adjusted in actual use, so that any combination of multiple power or current or resistance values is realized, and the purpose of adjusting the load power or current or resistance value in the load box circuit is achieved.
Furthermore, a first-gear resistor Rx is additionally arranged on the load resistor with the power or the current or the resistance value set according to the first calculation formula, the second calculation formula or the third calculation formula.
Further, the power or current or resistance value calculation mode of each load resistor connected in parallel on the voltage input end may be a first calculation formula, a second calculation formula, a third calculation formula, or any combination of the first calculation formula, the second calculation formula, and the third calculation formula.
Further, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
The invention has the beneficial effects that: the regulation of various loads in the load box can be flexibly combined, so that the output power or current or resistance value can meet the requirements of users; the load box has the advantages that the load can be adjusted and combined more conveniently, the cost of load design and manufacture is saved, and the load can be combined flexibly and multipurpose by a step-by-step adjustment and combination mode.
[ description of the drawings ]
FIG. 1 is a schematic circuit diagram of the present invention designed using a first or second computational formula;
FIG. 2 is a schematic diagram of a circuit using a third calculation sub-design according to the present invention;
FIG. 3 is a schematic diagram of a circuit designed by using the first or second calculation formula and adding a resistor Rx according to the present invention;
FIG. 4 is a schematic circuit diagram of the present invention using a third calculation equation with the addition of resistor Rx.
[ detailed description ] embodiments
The invention is further described with reference to the accompanying drawings and the detailed description. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1
As shown in fig. 1, in a load adjusting method, a voltage input end of a load box is connected in parallel with a plurality of load resistors, power or current or resistance values of the load resistors are preset according to a first calculation formula, the load resistors are sequentially arranged and connected to the voltage input end according to the power or current or resistance values of the load resistors, and the load resistors can be combined at will to flexibly adjust an overall load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Preferably, the power or current or resistance value of each load resistor arranged in sequence is set according to the following first calculation formula:
“R1＝a*1*100；R2＝a*2*100；R3＝a*2*100；R4＝a*5*100；R5＝a*1*101；R6＝a*2*101；R7＝a*2*101；R8＝a*5*101；R9＝a*1*102；R10＝a*2*102；R11＝a*2*102；R12＝a*5*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*2*10n；Rm+3＝a*5*10n"; where a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is a positive integer no less than 1, and n is (m +3)/4-1, and "R1, R2, R3 … … Rm + 3" represent loads connected in series with the respective range switches, and represent power (in watts, expressed as W) or current (in amperes, meter)Shown as A) or a resistance value (expressed as omega in unit ohm), and when the device is actually used, each gear switch is adjusted according to the power or current or the resistance value to be adjusted, so that the combination of any multiple power or current or resistance values is realized, and the purpose of adjusting the load power or current or resistance value in the load box circuit is achieved.
Preferably, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
Example 2
As shown in fig. 1, in a load adjusting method, a voltage input end of a load box is connected in parallel with a plurality of load resistors, power or current or resistance values of the load resistors are preset according to a second calculation formula, the load resistors are sequentially arranged and connected to the voltage input end according to the power or current or resistance values of the load resistors, and the load resistors can be combined at will to flexibly adjust an overall load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Preferably, the power or current or resistance value of each load resistor arranged in sequence is set according to the following second calculation formula:
“R1＝a*1*100；R2＝a*2*100；R3＝a*3*100；R4＝a*4*100；R5＝a*1*101；R6＝a*2*101；R7＝a*3*101；R8＝a*4*101；R9＝a*1*102；R10＝a*2*102；R11＝a*3*102；R12＝a*4*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*3*10n；Rm+3＝a*4*10n"; where a represents the minimum step value at the time of load regulation, m is a positive integer not less than 1, n is a positive integer not less than 1, and n ═ m +3)/4-1, "R1, R2, R3 … … Rm + 3" represent loads connected in series with the respective shift switches, and represent power (in watts, in terms of power)And W) or current (unit ampere, expressed as A) or resistance (unit ohm, expressed as omega), and when the device is actually used, each gear switch is adjusted according to the power or current or resistance to be adjusted, so that the combination of any multiple powers or currents or resistances is realized, and the purpose of adjusting the load power or current or resistance in the load box circuit is achieved.
Preferably, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
Example 3
As shown in fig. 2, in a load adjusting method, a voltage input end of a load box is connected in parallel with a plurality of load resistors, power or current or resistance values of the load resistors are preset according to a third calculation formula, the load resistors are sequentially connected to the voltage input end according to the power or current or resistance values of the load resistors, and the load resistors can be combined at will to flexibly adjust the whole load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Preferably, the power or current or resistance value of each load resistor arranged in sequence is set according to the following third calculation formula:
“R1＝a*20；R2＝a*21；R3＝a*22……Rm＝a*2n”；
wherein a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is a positive integer no less than 1, and n is m-1; the R1, R2, R3 … … Rm are loads connected in series with each range switch, and are calculated by power (unit watt, denoted as W) or current (unit ampere, denoted as a), or calculated by resistance value (unit ohm, denoted as Ω), and each range switch is adjusted according to the power or current or resistance value to be adjusted in actual use, so that any combination of multiple power or current or resistance values is realized, and the purpose of adjusting the load power or current or resistance value in the load box circuit is achieved.
Preferably, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
Example 4
As shown in fig. 3, in a load adjusting method, a voltage input end of a load box is connected in parallel with a plurality of load resistors, power or current or resistance values of the load resistors are preset according to a first calculation formula, the load resistors are sequentially connected to the voltage input end according to the power or current or resistance values of the load resistors, and the load resistors can be combined at will to flexibly adjust an overall load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Preferably, the resistance values of the respective load resistors arranged in sequence are set according to the following first calculation formula:
“R1＝a*1*100；R2＝a*2*100；R3＝a*2*100；R4＝a*5*100；R5＝a*1*101；R6＝a*2*101；R7＝a*2*101；R8＝a*5*101；R9＝a*1*102；R10＝a*2*102；R11＝a*2*102；R12＝a*5*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*2*10n；Rm+3＝a*5*10n"; in the formula, a represents the minimum step value during load regulation, m is a positive integer which is more than or equal to 1, n is (m +3)/4-1, and 'R1, R2 and R3 … … Rm + 3' are loads which are connected with each gear switch in series, the load is calculated by power (W, A) or current (A, ohm, omega), and each gear switch is regulated according to the power or current or resistance value to be regulated during actual use, so that any plurality of types of power or current can be realizedOr the combination of resistance values, so as to achieve the purpose of adjusting the load power or current or resistance value in the load box circuit.
Preferably, a first-gear resistor Rx is additionally arranged on the load resistor with the power or current or resistance value set according to the first calculation formula.
Preferably, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
Example 5
As shown in fig. 3, in a load adjusting method, a voltage input end of a load box is connected in parallel with a plurality of load resistors, power or current or resistance values of the load resistors are preset according to a second calculation formula, the load resistors are sequentially connected to the voltage input end according to the power or current or resistance values of the load resistors, and the load resistors can be combined at will to flexibly adjust the whole load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Preferably, the resistance values of the sequentially arranged load resistors are set according to the following second calculation formula:
“R1＝a*1*100；R2＝a*2*100；R3＝a*3*100；R4＝a*4*100；R5＝a*1*101；R6＝a*2*101；R7＝a*3*101；R8＝a*4*101；R9＝a*1*102；R10＝a*2*102；R11＝a*3*102；R12＝a*4*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*3*10n；Rm+3＝a*4*10n"; where a represents the minimum step value at the time of load regulation, m is a positive integer of 1 or more, n is a positive integer of 1 or more, and n is (m +3)/4-1, "R1, R2, R3 … … Rm + 3" represents a load connected in series with each shift switch, and the load is calculated as power (in watts, W) or current (in amperes, a)The load power or current or resistance value in the load box circuit can be adjusted by calculating the resistance value (unit ohm, expressed as omega), and adjusting each gear switch according to the power or current or resistance value to be adjusted in actual use, so that the combination of any multiple power or current or resistance values is realized, and the purpose of adjusting the load power or current or resistance value in the load box circuit is achieved.
Preferably, a first-gear resistor Rx is additionally arranged on the load resistor with the power or current or resistance value set according to the second calculation formula.
Preferably, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
Example 6
As shown in fig. 4, in a load adjusting method, a voltage input end of a load box is connected in parallel with a plurality of load resistors, power or current or resistance values of the load resistors are preset according to a third calculation formula, the load resistors are sequentially connected to the voltage input end according to the power or current or resistance values of the load resistors, and the load resistors can be combined at will to flexibly adjust an overall load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
Preferably, the power or current or resistance value of each load resistor arranged in sequence is set according to the following third calculation formula:
“R1＝a*20；R2＝a*21；R3＝a*22……Rm＝a*2n”；
wherein a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is a positive integer no less than 1, and n is m-1; the R1, R2, R3 … … Rm are loads connected in series with each range switch, and are calculated by power (unit watt, denoted as W) or current (unit ampere, denoted as a), or calculated by resistance value (unit ohm, denoted as Ω), and each range switch is adjusted according to the power or current or resistance value to be adjusted in actual use, so that any combination of multiple power or current or resistance values is realized, and the purpose of adjusting the load power or current or resistance value in the load box circuit is achieved.
Preferably, a first resistor Rx is added to the load resistor with the resistance value set according to the third calculation formula.
Preferably, the load resistor may be replaced with a capacitive load, an inductive load, an electronic load, a feedback unit type load, and any combination of a capacitive load, an inductive load, an electronic load, and a feedback unit type load.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and the application scope of the present invention can be extended to industries other than the load, as long as the combination mode of the regulation of the present invention is utilized, and the present invention is also within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (7)
1. A method of load regulation, characterized by: the load box comprises a voltage input end, a plurality of load resistors, a plurality of control circuits and a plurality of control circuits, wherein the voltage input end of the load box is connected with the plurality of load resistors in parallel, the power or current or resistance value of each load resistor is preset according to a calculation formula, each load resistor is sequentially connected to the voltage input end according to the power or current or resistance value of each load resistor, and the load resistors can be combined at will to flexibly adjust the whole load; each load resistor is respectively connected with a gear switch in series, and each gear switch independently controls the on-off of a load resistor circuit connected with the gear switch in series; the step-by-step regulation of the total power or the total current or the total resistance value of the load resistor is realized by opening or closing the gear switches in a combined mode.
2. The load regulation method of claim 1, wherein: the power or current or resistance value of each load resistor arranged in sequence can be set according to the following first calculation formula;
“R1＝a*1*100；R2＝a*2*100；R3＝a*2*100；R4＝a*5*100；R5＝a*1*101；R6＝a*2*101；R7＝a*2*101；R8＝a*5*101；R9＝a*1*102；R10＝a*2*102；R11＝a*2*102；R12＝a*5*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*2*10n；Rm+3＝a*5*10n"; where a represents the minimum step value at the time of load regulation, m is a positive integer equal to or greater than 1, n is a positive integer equal to or greater than 1, and n ═ m +3)/4-1, "R1, R2, R3 … … Rm + 3" are loads connected in series with the respective range switches, and are calculated as power (in watts, expressed as W), current (in amperes, expressed as a), or resistance (in ohms, expressed as Ω).
3. The load regulation method of claim 1, wherein: the power or current or resistance value of each load resistor arranged in sequence can be set according to the following second calculation formula;
“R1＝a*1*100；R2＝a*2*100；R3＝a*3*100；R4＝a*4*100；R5＝a*1*101；R6＝a*2*101；R7＝a*3*101；R8＝a*4*101；R9＝a*1*102；R10＝a*2*102；R11＝a*3*102；R12＝a*4*102……Rm＝a*1*10n；Rm+1＝a*2*10n；Rm+2＝a*3*10n；Rm+3＝a*4*10n"; where a represents the minimum step value at the time of load regulation, m is a positive integer equal to or greater than 1, n is a positive integer equal to or greater than 1, and n is (m +3)/4-1, and "R1, R2, R3 … … Rm + 3" represents a load connected in series with each shift switch, and may be calculated as power (in watts, represented by W) or current (in amperes, represented by a), or as a resistance value (in ohms, represented by Ω).
4. The load regulation method of claim 1, wherein: the power or current or resistance value of each load resistor arranged in sequence can be set according to the following third calculation formula;
“R1＝a*20；R2＝a*21；R3＝a*22……Rm＝a*2n”；
wherein a represents the minimum step value during load regulation, m is a positive integer no less than 1, n is a positive integer no less than 1, and n is m-1; "R1, R2, R3 … … Rm" is the load in series with each range switch, and can be calculated as power (in watts, denoted as W) or current (in amperes, denoted as a), or as resistance (in ohms, denoted as Ω).
5. The load regulation method of claim 2, 3 or 4, wherein: and adding a first-gear resistor Rx to the load resistor with the power or the current or the resistance value set according to the first calculation formula, the second calculation formula or the third calculation formula.
6. The load regulation method of claim 1, wherein: the power or current or resistance value calculation mode of each load resistor connected in parallel on the voltage input end can be a first calculation formula, a second calculation formula, a third calculation formula or any combination of the first calculation formula, the second calculation formula and the third calculation formula.
7. The load regulation method of claim 1, wherein: the load resistor can be replaced by a capacitive load, an inductive load, an electronic load, a feedback unit type load and any combination of the capacitive load, the inductive load, the electronic load and the feedback unit type load.
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| CN113704971A (en) * | 2021-07-30 | 2021-11-26 | 西安铁路信号有限责任公司 | Multilayer resistance band isothermal rise calculation method |
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| CN108683331A (en) * | 2018-05-03 | 2018-10-19 | 郑州云海信息技术有限公司 | A kind of regulating system and method for server switch power source output voltage |
| CN209691504U (en) * | 2019-03-28 | 2019-11-26 | 北京科易动力科技有限公司 | Adjustable current module and resistor load box |
| CN111064460A (en) * | 2019-12-30 | 2020-04-24 | 广州视源电子科技股份有限公司 | Switch circuit, switch identification method, storage medium, and terminal |
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| CN102183949A (en) * | 2011-02-28 | 2011-09-14 | 中国北方车辆研究所 | Method for realization of optimally-cascaded multiplex intelligent simulation load |
| CN103048942A (en) * | 2012-12-17 | 2013-04-17 | 许如臣 | Circuit with two-wire system structure of manual button box for electric door |
| CN106908748A (en) * | 2015-12-22 | 2017-06-30 | 北京科易动力科技有限公司 | A kind of program-controlled resistor coupled capacitor simulator |
| CN108683331A (en) * | 2018-05-03 | 2018-10-19 | 郑州云海信息技术有限公司 | A kind of regulating system and method for server switch power source output voltage |
| CN209691504U (en) * | 2019-03-28 | 2019-11-26 | 北京科易动力科技有限公司 | Adjustable current module and resistor load box |
| CN111064460A (en) * | 2019-12-30 | 2020-04-24 | 广州视源电子科技股份有限公司 | Switch circuit, switch identification method, storage medium, and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113704971A (en) * | 2021-07-30 | 2021-11-26 | 西安铁路信号有限责任公司 | Multilayer resistance band isothermal rise calculation method |
| CN113704971B (en) * | 2021-07-30 | 2022-11-18 | 西安铁路信号有限责任公司 | Multilayer resistance band isothermal rise calculation method |
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