CN207321116U - A kind of switching power circuit and medical centrifuge - Google Patents
A kind of switching power circuit and medical centrifuge Download PDFInfo
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- CN207321116U CN207321116U CN201720817934.3U CN201720817934U CN207321116U CN 207321116 U CN207321116 U CN 207321116U CN 201720817934 U CN201720817934 U CN 201720817934U CN 207321116 U CN207321116 U CN 207321116U
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Abstract
A kind of switching power circuit and medical centrifuge, the switching power circuit include front end circuit, AC power are connected, for ac supply signal to be converted into DC power signal；Switching Power Supply, is connected with front end circuit, for exporting DC power supply；The DC power supply is sequentially connected in series resistance and capacitance, the both ends connection electronic lock of the capacitance.The utility model further includes a kind of medical centrifuge.The utility model is on the one hand in the case where ensureing that original circuit is constant, moreover it is possible to while meet the purpose of great-power electronic lock power supply；On the other hand, low current trickle charge, the purpose of high current repid discharge can be realized；Small and cost is low, circuit structure is simple；The power supply that can effectively prevent the power supply of voltage stabilizing difference high to voltage stabilizing accuracy interferes.
Description
Technical field
Switch power technology field is the utility model is related to, particularly a kind of switching power circuit and medical centrifuge.
Background technology
The actuation control circuit generally use support circuit of existing medical centrifuge door closure lock, such as directly turns AC power
Change the electromagnet coil power supply that the DC power supply of 12V is locked to door closure into, and if using the circuit on other small power electric devices
Plate, then can not lock with door closure and share.But since circuit board is mass production, not only take if redesigning circuit board
When it is laborious, can also improve cost, therefore a in the case where ensureing that original circuit is constant there is an urgent need for designing, moreover it is possible to while meet big
The switching power circuit of power door cover lock power supply.
If on original circuit base, DC24V is directly over DC/DC modular converters and is converted into locking electromagnetism with door closure
The corresponding voltage of iron phase, since original circuit is low-power circuit, it is impossible to be controlled to powerful door closure lock；This is just needed
DC/DC modular converters are upgraded into powerful modular converter, while the power of whole power supply also becomes larger, and so may result in into
This height, volume are big, circuit structure is complicated.
Utility model content
It is low that a kind of cost is provided the purpose of the utility model is to overcome the above-mentioned deficiency of the prior art, small, circuit
Switching power circuit and medical centrifuge simple in structure, can be in the case where ensureing that original circuit is constant, moreover it is possible to full at the same time
The purpose of sufficient great-power electronic lock power supply.
The technical solution of the utility model is：
A kind of switching power circuit of the technical program, including front end circuit, connect AC power, for by AC power
Signal is converted into DC power signal；Switching Power Supply, is connected with front end circuit, for exporting DC power supply；The DC power supply
It is sequentially connected in series resistance and capacitance, the both ends connection electronic lock of the capacitance.
Such scheme has the following advantages：
（1）On the basis for not changing Switching Power Supply original structure and circuit, it need to only be set in the output terminal of DC power supply
Put resistance and capacitance, it is possible to realize the actuation of electronic lock, it is on the one hand time saving and energy saving, without carrying out overall change to Switching Power Supply
Into greatling save cost；On the other hand, resistance and capacitance itself are small, will not increase the volume of original Switching Power Supply, and electricity
Line structure is simple；
（2）Since the power of original Switching Power Supply is smaller, it is impossible to reach the instantaneous power of electronic lock, by setting capacitance,
When sparking, its power produced can meet or exceed the instantaneous power required by electronic lock, so as to fulfill electronics
The actuation of lock, that is to say, that this programme is in the case where original circuit is constant, moreover it is possible to while meet great-power electronic lock power supply
Purpose；
（3）By setting resistance and capacitance, it can realize low current trickle charge, the purpose of high current repid discharge, work as capacitance
After energization, can for a long time maintenance voltage it is constant, other circuits will not be interfered.
Further, power end of the capacitance through switch connection electronic lock.By by lower switch, it can be achieved that capacitance it is instantaneous
Repid discharge, achievees the purpose that electronic lock is attracted.
Further, the DC power supply is also connected with DC/DC modular converters.DC voltage can be turned by DC/DC modular converters
Change the DC voltage lower than its voltage into, such as 24V turns 12V, 5V.
Further, the DC power supply of the Switching Power Supply output two-way different voltages, the isolation of two-way DC power supply are set.It
So set the output of two-way DC power supply, be because the equipment precision requirement having is higher, can be to equipment once voltage fluctuation is larger
Precision impact, therefore this programme sets two-way power supply, and DC power voltage stabilizing accuracy is high all the way, strong antijamming capability,
Power available for for high precision apparatus；Another way DC power supply precision is relatively low, is applicable to the not high occasion of required precision.By two
Road DC power supply isolation is set, and the power supply that the power supply of voltage stabilizing difference can be prevented high to voltage stabilizing accuracy interferes.
Further, the two-way DC power supply is isolated by isolation circuit, and such as optical coupling isolation circuit can be straight by two-way
Galvanic electricity source thoroughly isolates, and does not interfere with each other.
Preferably, the Switching Power Supply exports the DC power supply of 24V and 15V respectively, and the DC power supply of 24V turns through DC/DC
Mold changing block is converted into 5V voltages, and the DC power supply of 15V is converted into 5V voltages, the DC power supply of the 24V through DC/DC modular converters
It is sequentially connected in series the resistance and capacitance.The precision prescribed of the wherein DC power supply of 15V is higher, thus 15V DC power supplies with
The DC power supply that 15V turns 5V is one group, and 24V DC power supplies are one group with the 24V DC power supplies for turning 5V, phase between this two groups of power supplys
Isolation, can select different DC power supplies to be powered according to the required precision of equipment, provide the precision of equipment significantly and resist dry
Disturb ability.
Further, the front end circuit includes rectification circuit and filter circuit.AC power can pass through rectification circuit successively
Steady dc voltage is obtained with filter circuit.
Further, a branch of the AC power is through front end circuit connecting valve power supply, and another branch is through preposition
Circuit connects motor drive module, the output terminal connection motor of motor drive module.The switching power circuit of this programme can be
The existing power supply architecture that can be used for driving motor action, therefore, on the basis for not changing original switching power circuit, also
It can meet the purpose of great-power electronic lock power supply at the same time, substantially reduce cost, it is time saving and energy saving.
A kind of medical centrifuge of the technical program, including door closure are locked and according to the foregoing switching power circuit, institute
State the power end of the capacitance both ends connection door closure lock of switching power circuit.
By using original power switch circuit, and add resistance and capacitance, it is possible to do not changing original Switching Power Supply
On the basis of circuit, the purpose to the lock power supply of high-power door closure is realized, and the Switching Power Supply can also be to motor or other small work(
Rate equipment is powered, and versatile, cost-effective, circuit structure is simple, and system is reliable and stable.
Further, the electromagnet coil of the door closure lock and the both ends of capacitance connect, and capacitance electric discharge, door closure lock is powered moment
It is attracted and unlocks.
The beneficial effects of the utility model：First, in the case where ensureing that original circuit is constant, moreover it is possible to while meet big work(
The purpose of rate electronic lock power supply；Second, it can realize low current trickle charge, the purpose of high current repid discharge；3rd, cost is low,
Small, circuit structure is simple；4th, the power supply that can effectively prevent the power supply of voltage stabilizing difference high to voltage stabilizing accuracy causes to do
Disturb.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment；
Fig. 2 is the structure diagram of the utility model embodiment Door cover lock control circuit.
Embodiment
The utility model is described in further details below with reference to Figure of description and specific embodiment.
As depicted in figs. 1 and 2：A kind of switching power circuit, including front end circuit, connect AC power AC220V, are used for
Ac supply signal is converted into DC power signal；Switching Power Supply, is connected with front end circuit, for exporting DC power supply；Directly
Galvanic electricity source is sequentially connected in series resistance R and capacitance C3, and the both ends of capacitance C3 are locked through switching the door closure of K connection medical centrifuges.
Specifically, front end circuit includes rectification circuit and filter circuit, and wherein rectification circuit is rectifier bridge, filter circuit
For the filter capacitor being connected with rectifier bridge.
In the present embodiment, the rectified bridge H1 of a branch and filter capacitor C1 connecting valve power supplys of AC power are another
The rectified bridge H2 of bar branch connects motor drive module, the output terminal connection motor M of motor drive module with filter capacitor C2.
Wherein, the power of Switching Power Supply is 6 ~ 10W, AC power rectified bridge and the filter capacitor rectification successively of AC220V
Be converted into DC power signal after filtering, then through Switching Power Supply export DC24V and DC15V two-way DC power supplies, and switch electricity
Source is internally provided with isolation circuit, and DC24V power supplys and DC15V isolated from power are not interfere with each other.DC24V power supplys and DC15V power supplys point
DC5V power supplys are not converted into through DC/DC modular converters.
In the present embodiment, the precision prescribed of DC15V power supplys is higher, relatively low to the precision prescribed of DC24V power supplys, therefore,
DC24V power supplys are one group with the DC24V power supplys for turning DC5V, and DC15V power supplys turn DC5V power supplys as one group with DC15V, this two groups electric
It is isolated between source, to prevent DC15V power supplys from being disturbed be subject to other power supplys.
In the present embodiment, the voltage of door closure lock is DC12V, instantaneous power 24W, if selecting DC15V power supplys to start
Door closure is locked, and the discharge and recharge of capacitance can cause voltage instability, it is impossible to reach high-precision requirement, so as to influence the essence of rear class equipment
Degree, therefore, the present embodiment select DC24V power supplys, i.e. DC24V power supplys are sequentially connected in series resistance R and capacitance C3, door closure lock
Electromagnet coil is connected with the both ends of capacitance C3, and by capacitance C3 instantaneous discharges, door closure lock moment is attracted and unlocks.
The capacitance C3 of the present embodiment is large bulk capacitance, if capacity is 3300 μ F, voltage 35V.
The operation principle of the present embodiment is：After switching power circuit is powered, 24V power supplys are charged by resistance R to capacitance C3,
Such as charged using the power of 2W or so to capacitance C3；Since capacitance voltage cannot be mutated, supply voltage is gradually increased to by 0
24V, after capacitance C3 is fully charged, maintain 24V voltages it is constant, at this time door closure lock pin medical centrifuge, when need open door closure
During lock, by lower switch K, capacitance C3 instantaneous discharges produce instantaneous power, and power is more than 24W so that the electromagnet wink in door closure lock
Between be attracted, the door closure of medical centrifuge is opened, and voltage declines after capacitance C3 instantaneous discharges, continues to charge.
In conclusion the present embodiment has the following advantages：First, in the case where ensureing that original circuit is constant, moreover it is possible to same
When meet the purpose of high-power door closure lock power supply；Second, it can realize low current trickle charge, the purpose of high current repid discharge；The
Three, cost is low, small, and circuit structure is simple；4th, it can effectively prevent the power supply of the voltage stabilizing difference electricity high to voltage stabilizing accuracy
Source interferes.
The above is only the preferred embodiment of the present invention, and the protection scope of the utility model is not limited thereto, any
Those familiar with the art is in the technical scope that the utility model discloses, the technical solution that can obviously obtain
Simple change or equivalence replacement each fall within the scope of protection of the utility model.
Claims (10)
1. a kind of switching power circuit, including front end circuit, connect AC power, for ac supply signal to be converted into direct current
Power supply signal；Switching Power Supply, is connected with front end circuit, for exporting DC power supply；It is characterized in that, the DC power supply is successively
It is connected in series resistance and capacitance, the both ends connection electronic lock of the capacitance.
2. switching power circuit according to claim 1, it is characterised in that electricity of the capacitance through switch connection electronic lock
Source.
3. switching power circuit according to claim 1, it is characterised in that the DC power supply is also connected with DC/DC conversions
Module.
4. switching power circuit according to claim 1, it is characterised in that the Switching Power Supply exports two-way different voltages
DC power supply, two-way DC power supply isolation set.
5. switching power circuit according to claim 4, it is characterised in that the two-way DC power supply passes through isolation circuit
Isolation.
6. switching power circuit according to claim 4, it is characterised in that the Switching Power Supply exports 24V and 15V respectively
DC power supply, the DC power supply of 24V is converted into 5V voltages through DC/DC modular converters, and the DC power supply of 15V is changed through DC/DC
Module is converted into 5V voltages, and the DC power supply of the 24V is sequentially connected in series the resistance and capacitance.
7. according to claim 1 ~ 6 any one of them switching power circuit, it is characterised in that the front end circuit includes rectification
Circuit and filter circuit.
8. according to claim 1 ~ 6 any one of them switching power circuit, it is characterised in that a branch of the AC power
Road connects motor drive module through front end circuit connecting valve power supply, another branch through front end circuit, motor drive module
Output terminal connects motor.
9. a kind of medical centrifuge, it is characterised in that locked including door closure and electricity is switched according to claim 1 ~ 8 any one of them
Source circuit, the power end of the capacitance both ends connection door closure lock of the switching power circuit.
10. medical centrifuge according to claim 9, it is characterised in that the electromagnet coil and capacitance of the door closure lock
Both ends connection, capacitance electric discharge, door closure lock be powered moment be attracted and unlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720817934.3U CN207321116U (en) | 2017-07-07 | 2017-07-07 | A kind of switching power circuit and medical centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720817934.3U CN207321116U (en) | 2017-07-07 | 2017-07-07 | A kind of switching power circuit and medical centrifuge |
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| Publication Number | Publication Date |
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| CN207321116U true CN207321116U (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720817934.3U Active CN207321116U (en) | 2017-07-07 | 2017-07-07 | A kind of switching power circuit and medical centrifuge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039090A (en) * | 2018-09-03 | 2018-12-18 | 珠海格力电器股份有限公司 | Controller, air-conditioning and the method powered using direct current to controller |
-
2017
- 2017-07-07 CN CN201720817934.3U patent/CN207321116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039090A (en) * | 2018-09-03 | 2018-12-18 | 珠海格力电器股份有限公司 | Controller, air-conditioning and the method powered using direct current to controller |
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