CN202975292U - Eight-way electronic load device - Google Patents
Eight-way electronic load device Download PDFInfo
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- CN202975292U CN202975292U CN 201220734563 CN201220734563U CN202975292U CN 202975292 U CN202975292 U CN 202975292U CN 201220734563 CN201220734563 CN 201220734563 CN 201220734563 U CN201220734563 U CN 201220734563U CN 202975292 U CN202975292 U CN 202975292U
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Abstract
The utility model discloses an eight-way electronic load device, and relates to a load testing device in the low-voltage direct current power supply field. The eight-way electronic load device comprises switches, auxiliary power supplies, load units, parameter display modules, load adjustment devices, temperature control switches and fans. The eight load units and peripheral auxiliary functional units thereof are mounted in an entire machine to make up the device; each load unit and the peripheral auxiliary functional unit thereof make up a single-way electronic load; and each single-way electronic load is identical, is independent from each other, can work individually and can also work parallelly so as to increase the load. The eight-way electronic load device has the advantages that the ways are multiple, the current is continuous and adjustable, several ways can be connected in parallel, the heat radiation effect is good, and the like, and is particularly suitable for testing the load device of a multi-way low-voltage direct current output power supply.
Description
Technical field
The utility model relates to that in low-voltage direct-current Switching Power Supply, linear power supply field, a kind of band carries proving installation.Be specially adapted to test a kind of load device of multichannel low-voltage direct out-put supply.
Background technology
At present, the electronic load of main flow is program control type mostly on the market, and is the single channel electronic load mostly.This electronic load is compared with eight road electronic loads, because needs arrange current value with terminal, therefore when the load capacity of testing power supply, can't be well continuous setup electric current on a large scale, load way in addition is few, when the test multiple-output electric power, need to prepare several loads, setup test is on-the-spot needs the time of cost long.
The utility model content
Technical problem to be solved in the utility model be to avoid the weak point in the above-mentioned background technology and provide that a kind of current continuity is adjustable, simple to operate, eight road electronic loads that the load way is many.It is adjustable that the present invention has current continuity, and the load way is many, but multi-channel parallel, the advantages such as good heat dissipation effect.
Technical problem to be solved in the utility model is realized by following technical scheme:
A kind of eight road electronic load devices comprise the first to the 8th switch 1-1 to 1-8, the first to the 8th accessory power supply 2-1 to 2-8, the first to the 8th load unit 3-1 to 3-8, the first to the 8th parameter display module 4-1 to 4-8, the first to the 8th load regulator 5-1 to 5-8, first to fourth temp control switch 6-1 to 6-4 and the first to second fan 7-1 to 7-2; It is characterized in that: alternating current 220V controls by the first to the 8th switch 1-1 to 1-8, transfer to respectively the first to the 8th accessory power supply 2-1 to 2-8 and first to fourth temp control switch 6-1 to 6-4, wherein the first to the 8th accessory power supply 2-1 to 2-8 provides circuit working required electric energy for respectively the first to the 8th load unit 3-1 to 3-8; The first to the 8th accessory power supply 2-1 to 2-8 provides electric energy for respectively the first to the 8th parameter display module 4-1 to 4-8 by the first to the 8th load unit 3-1 to 3-8; The first to the 8th load regulator 5-1 to 5-8 is connected to respectively the first to the 8th load unit 3-1 to 3-8, is used for adjusting the watt level of the first to the 8th load unit 3-1 to 3-8; First to fourth temp control switch 6-1 to 6-4 is relation in parallel, the temperature that is used for four positions in perception eight road electronic load devices,, start the first fan 7-1 and the second fan 7-2 eight road electronic load devices are carried out wind-cooling heat dissipating during higher than respective threshold when the temperature of any one temp control switch 6 perception.
Wherein, described the first to the 8th load unit 3-1 to 3-8 is identical; Described load unit 3 comprises that reverse voltage holding circuit 8, voltage sample automatically adjust network 9, voltage sampling circuit 10, current sampling circuit 11, power and control Circuit tuning 12, temperature sensor 13, current foldback circuit 14, overheating protection circuit 15 and load circuit 16; Tested power supply transfers to load circuit 16 by reverse-phase protection circuit 8 and current sampling circuit 11, voltage sample is automatically adjusted network 9 and is detected tested supply voltage, mesh power is controlled the parameter of Circuit tuning 12, adjusts by the power of 5 pairs of load circuits 16 of load regulator; Temperature sensor 13 is used for the temperature of perception load circuit 16, if excess Temperature carries out overheating protection thereby control Circuit tuning 12 by the overheating protection circuit switch-off power to load circuit 16; Current sample branch road 11 transfers to current foldback circuit 14 with signal, if electric current is excessive, current foldback circuit 14 switch-off powers are controlled 12 pairs of load circuits of Circuit tuning 16 and carried out overcurrent protection; Voltage sample branch road 10 and current sample branch road 11 transfer to parameter display module 4 with the voltage and current signal of tested power supply, and the parameter of tested power supply is monitored; Accessory power supply 2 provides electric energy for whole circuit working.
The utility model is compared background technology and is had following advantage:
1, the utility model way is many, and one has eight groups of independently electronic loads, and they are separate, there is no public isopotential point.Use comparatively flexible.Positive supply can be connect simultaneously in eight road electronic loads, also negative supply can be connect., can also get up to use by multi-channel parallel when inadequate when one tunnel load capacity.There is independently power switch on every road, when not needing all to work, also can open less the power switch of several roads load, with using electricity wisely.
2, load regulator of the present utility model is multiturn potentiometer, by potentiometer, the electric current by electronic load is regulated, and can realize that therefore load current is adjustable continuously to ratings, simple to operation from zero;
3, radiator fan of the present utility model is controlled by temperature relay, and when radiator temperature was low, fan was not worked, and reduces operating noise, has embodied human oriented design;
Description of drawings
Fig. 1 is electric functional-block diagram of the present utility model.
Fig. 2 is the electric functional-block diagram of the utility model load unit 3.
Embodiment
See figures.1.and.2, the utility model is comprised of the first to the 8th switch 1-1 to 1-8, the first to the 8th accessory power supply 2-1 to 2-8, the first to the 8th load unit 3-1 to 3-8, the first to the 8th parameter display module 4-1 to 4-8, the first to the 8th load regulator 5-1 to 5-8, first to fourth temp control switch 6-1 to 6-4 and the first to second fan 7-1 to 7-2.Fig. 1 is electric functional-block diagram of the present utility model, and embodiment presses Fig. 1 connection line.The utility model rated operational voltage is less than or equal to 60V, and the first to the 8th load unit 3-1 to 3-8 is identical, but every road consumed power 100W.
The effect of the first to the 8th switch 1-1 to 1-8 of the present utility model is to control respectively the first to the 8th accessory power supply 2-1 to 2-8.Embodiment adopts ship type switch, and model is: R13-73A.
The first to the 8th accessory power supply 2-1 to 2-8 effect of the present utility model is to provide electric energy to the first to the 8th load unit 3-1 to 3-8 respectively, and electric energy is provided for the first to the 8th parameter display module 4-1 to 4-8 by the first to the 8th load unit 3-1 to 3-8.Embodiment adopts linear transformer and three terminal regulator to be made.
The first to the 8th parameter display module 4-1 to 4-8 effect of the present utility model is voltage, the current parameters of the tested power supply of monitoring.Embodiment adopts digital panel meter, and model is ST3002, manufacturer Shenzhen prosperous intelligence star Electronics Co., Ltd..
The effect of load regulator 5 of the present utility model is to be connected to power to control Circuit tuning 12, regulates the size that tested Power supply belt carries power, and embodiment adopts multiturn potentiometer, and model is WXD221-100 Ω.
The first fan 7-1 of the present utility model and the second fan 7-2 do the used time device are carried out wind-cooling heat dissipating.Embodiment adopts AC blower fan, and model is 4C-230HB/AC220V (120 * 120 * 38mm).First to fourth temp control switch 6-1 to 6-4 is in parallel to be used, and is installed on respectively 4 positions in device, is used for the temperature of perception load unit 3.When the temperature at any one position surpasses 45 ± 5 ℃, start the first fan 7-1 and the second fan 7-2 and carry out wind-cooling heat dissipating.Embodiment adopts temperature relay, and model is JUC-068M/45 ± 5 ℃-1H, and manufacturer is Guizhou space flight electrical equipment company.
The effect of the first to the 8th load unit (3-1 to 3-8) of the present utility model is that the electric energy to tested power supply dissipates.Its internal point functional-block diagram as shown in Figure 2.
The effect of reverse-phase protection circuit 8 of the present utility model is that to prevent that tested power positive cathode from connecing the anti-ballistic path loss of sending a telegraph bad, and embodiment adopts heavy-duty diode, and model is: MUR3020.Tested power supply transfers to load circuit 16 by reverse-phase protection circuit 8 and current sampling circuit 11, and the electric energy of 16 pairs of tested power supplys of load circuit dissipates, and embodiment adopts operational amplifier driven MOS pipe to make and forms.The effect that voltage sample is adjusted network 9 automatically is in the situation that tested supply voltage is different, parameter to power control Circuit tuning 12 is mated setting, increases the range of adjustment of load regulator 5, is made the electric current adjusting accurate, fine and smooth, embodiment adopts voltage comparator to control metal-oxide-semiconductor conducting or shutoff, and the parameter of power being controlled Circuit tuning 12 arranges.It is that the power of load circuit 16 is regulated that power is controlled Circuit tuning 12 effects, and embodiment adopts the resistance string parallel network to realize.The effect of current foldback circuit 14 is signals of received current sample circuit 11; if electric current is excessive; switch-off power is controlled 12 pairs of load circuits of Circuit tuning 16 and is carried out overcurrent protection, and embodiment adopts the voltage comparator turn-on transistor, controls Circuit tuning 12 with switch-off power.Temperature sensor 13 is used for the temperature of perception load circuit 16, and embodiment adopts temperature relay, and model is: JUC-162F/80H-B, manufacturer are Guizhou space flight electrical equipment company.Overheating protection circuit 15 is used for receiving the signal of temperature sensor 13, and after temperature was higher than 80 ± 5 ℃, switch-off power was controlled 12 pairs of load circuits of Circuit tuning 16 and carried out overheating protection.Embodiment adopts the voltage comparator turn-on transistor.The effect of voltage sampling circuit 10 is that the voltage of tested power supply is sampled, and sampled signal is transferred to parameter display module 4 carry out the voltage demonstration, and embodiment adopts electric resistance partial pressure to realize.
The concise and to the point principle of work of the utility model is as follows:
Tested power supply is connected to load unit 3, and after voltage being detected, voltage sample is automatically adjusted 9 pairs of power control Circuit tunings 12 of network and carried out parameter matching, thereby changes the range regulated of load regulator 5.Load regulator 5 is connected to power and controls Circuit tuning 12, and the band of tested power supply is carried power adjustment.The voltage and current parameter of 4 pairs of tested power supplys of parameter display module is monitored.
The novel concise and to the point mounting structure of this use is as follows:
The first to the 8th load unit 3-1 to 3-8 is screwed on the case radiation device by the mounting hole of self, surface of contact coated with thermally conductive silicone grease; First to fourth temp control switch 6-1 to 6-4 is arranged on four positions of heating radiator uniformly.The first to the 8th accessory power supply 2-1 to 2-8 is screwed at upper plate by self mounting hole.The installation direction of fan 7-1 and fan 7-2 is that one to installing interior exhausting, an exhausting outside device.The first to the 8th parameter display module 4-1 to 4-8, the first to the 8th switch 1-1 to 1-8 and the first to the 8th load regulator 5-1 to 5-8 are arranged on front panel, are connected to each parts by cable.
Claims (2)
1. an electronic load device, comprise the first to the 8th switch (1-1 to 1-8), the first to the 8th accessory power supply (2-1 to 2-8), the first to the 8th load unit (3-1 to 3-8), the first to the 8th parameter display module (4-1 to 4-8), the first to the 8th load regulator (5-1 to 5-8), first to fourth temp control switch (6-1 to 6-4) and the first to second fan (7-1 to 7-2); it is characterized in that: alternating current 220V controls by the first to the 8th switch (1-1 to 1-8), transfer to respectively the first to the 8th accessory power supply (2-1 to 2-8) and first to fourth temp control switch (6-1 to 6-4), wherein the first to the 8th accessory power supply (2-1 to 2-8) provides circuit working required electric energy for respectively the first to the 8th load unit (3-1 to 3-8), the first to the 8th accessory power supply (2-1 to 2-8) provides electric energy for respectively the first to the 8th parameter display module (4-1 to 4-8) by the first to the 8th load unit (3-1 to 3-8), the first to the 8th load regulator (5-1 to 5-8) is connected to respectively the first to the 8th load unit (3-1 to 3-8), is used for adjusting the watt level of the first to the 8th load unit (3-1 to 3-8), first to fourth temp control switch (6-1 to 6-4) is relation in parallel, the temperature that is used for four positions in perception eight road electronic load devices,, start the first fan (7-1) and the second fan (7-2) eight road electronic load devices are carried out wind-cooling heat dissipating during higher than respective threshold when the temperature of any one temp control switch (6) perception.
2. eight road electronic load devices according to claim 1, it is characterized in that: described the first to the 8th load unit (3-1 to 3-8) is identical; Described load unit 3 comprises that reverse voltage holding circuit (8), voltage sample automatically adjust network (9), voltage sampling circuit (10), current sampling circuit (11), power and control Circuit tuning (12), temperature sensor (13), current foldback circuit (14), overheating protection circuit (15) and load circuit (16); Tested power supply transfers to load circuit (16) by reverse-phase protection circuit (8) and current sampling circuit (11), voltage sample is automatically adjusted network (9) and is detected tested supply voltage, mesh power is controlled the parameter of Circuit tuning (12), by load regulator (5), the power of load circuit (16) is adjusted; Temperature sensor (13) is used for the temperature of perception load circuit (16), if excess Temperature, control Circuit tuning (12) by the overheating protection circuit switch-off power thus load circuit (16) is carried out overheating protection; Current sample branch road (11) transfers to current foldback circuit (14) with signal, if electric current is excessive, current foldback circuit (14) switch-off power is controlled Circuit tuning (12) load circuit (16) is carried out overcurrent protection; Voltage sample branch road (10) and current sample branch road (11) transfer to parameter display module (4) with the voltage and current signal of tested power supply, and the parameter of tested power supply is monitored; Accessory power supply (2) provides electric energy for whole circuit working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734563 CN202975292U (en) | 2012-12-28 | 2012-12-28 | Eight-way electronic load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734563 CN202975292U (en) | 2012-12-28 | 2012-12-28 | Eight-way electronic load device |
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|---|---|
| CN202975292U true CN202975292U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734563 Expired - Fee Related CN202975292U (en) | 2012-12-28 | 2012-12-28 | Eight-way electronic load device |
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| CN (1) | CN202975292U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324528A (en) * | 2015-06-16 | 2017-01-11 | 群光电能科技股份有限公司 | Variable load module |
| CN109270381A (en) * | 2018-10-30 | 2019-01-25 | 杭州高坤电子科技有限公司 | The load of four tunnel independent electronics controls and measures junction temperature system and its junction temperature measurement method |
| CN110957711A (en) * | 2019-11-14 | 2020-04-03 | 中国空间技术研究院 | Equivalent spacecraft power supply overvoltage protection device for ground test |
-
2012
- 2012-12-28 CN CN 201220734563 patent/CN202975292U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324528A (en) * | 2015-06-16 | 2017-01-11 | 群光电能科技股份有限公司 | Variable load module |
| CN109270381A (en) * | 2018-10-30 | 2019-01-25 | 杭州高坤电子科技有限公司 | The load of four tunnel independent electronics controls and measures junction temperature system and its junction temperature measurement method |
| CN110957711A (en) * | 2019-11-14 | 2020-04-03 | 中国空间技术研究院 | Equivalent spacecraft power supply overvoltage protection device for ground test |
| CN110957711B (en) * | 2019-11-14 | 2022-04-12 | 中国空间技术研究院 | Equivalent spacecraft power supply overvoltage protection device for ground test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20211228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |