KR101724275B1 - Variable switch-type portable power supply - Google Patents

Variable switch-type portable power supply Download PDF

Info

Publication number
KR101724275B1
KR101724275B1 KR1020150156465A KR20150156465A KR101724275B1 KR 101724275 B1 KR101724275 B1 KR 101724275B1 KR 1020150156465 A KR1020150156465 A KR 1020150156465A KR 20150156465 A KR20150156465 A KR 20150156465A KR 101724275 B1 KR101724275 B1 KR 101724275B1
Authority
KR
South Korea
Prior art keywords
unit
voltage
variable power
body case
main body
Prior art date
Application number
KR1020150156465A
Other languages
Korean (ko)
Inventor
유경미
김시영
황규찬
이동철
엄한근
유수영
Original Assignee
(주)삼일피엔유
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)삼일피엔유 filed Critical (주)삼일피엔유
Priority to KR1020150156465A priority Critical patent/KR101724275B1/en
Application granted granted Critical
Publication of KR101724275B1 publication Critical patent/KR101724275B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/285—Single converters with a plurality of output stages connected in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)

Abstract

The present invention relates to a variable power supply device and, more specifically, to a portable switch-type variable power supply device comprising: a main body case having a rectangular shape; an AC input terminal provided on a side of the main body case to which AC power is input from the outside; a low voltage conversion unit positioned inside the main body case and converting electricity applied from the AC input terminal; a rectifier unit rectifying AC converted by the low voltage converting unit to DC; a switching unit connected to the rectifier unit to change a rectified voltage; a main control unit receiving a digital signal applied from the switching unit while controlling the frequency and output voltage of the switching unit; and a DC output terminal provided on another side of the main body case to output DC power. The variable power supply device is significantly reduced in size and weight due to the application of a flyback technology to the power part (the rectifier unit and the switching unit). Thus, the variable power supply device is easy to carry and can use various power sources.

Description

[0001] Variable switch-type portable power supply [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable switch type variable power source device, and more particularly to a portable switch type variable power source device that stably supplies various converted DC sources to an electric device and an experimental device.

A conventional variable power source device includes a low voltage converter that receives a commercial AC power and transforms it by an electromagnetic induction action to output a low voltage, a bridge diode that rectifies the AC current converted by the low voltage converter, A first smoothing capacitor that smoothens the smoothing capacitor uniformly and a smoothing capacitor is connected to the smoothing capacitor through a first smoothing capacitor and a smoothing capacitor through a second smoothing capacitor.

However, the conventional variable power source apparatus has a large size and heavy weight, which is inconvenient to carry and use.

Korean Patent Publication No. 10-2015-0057044 (May 27, 2015) Korean Registered Patent No. 10-0913377 (Aug. 20, 2009)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a variable power source device which is stable and outputs a variety of voltages, is light in weight and small in size, and includes a rectifying part and a switching part, Fly back) method to fix the output current to 1 A.

Another object of the present invention is to provide a portable switch type variable power source device including a main body case, an AC input terminal, a low voltage conversion section, a rectification section, a switching section, a main control section, a DC output terminal and a display section.

It is a further object of the present invention to provide a portable switch type in which a main body case has a rectangular parallelepiped shape and an AC input terminal to which AC power is input from the outside is provided on one side and a 110 V to 220 V commercial AC power is input to the AC input terminal And to provide a variable power supply.

It is still another object of the present invention to provide a DC output terminal that is provided with a slit-shaped cooling hole and a cooling fan for cooling internal heat on a side surface thereof and a DC power source on the other side thereof.

It is still another object of the present invention to provide a portable switch type variable power source in which a PCB substrate including a low-voltage conversion unit, a rectification unit, a switching unit, and a main control unit is installed inside a main body case.

It is still another object of the present invention to provide a portable switch type variable power source device that receives a commercial AC power from a primary winding and transforms the secondary AC power into an alternating current by an electromagnetic induction action to output a low voltage.

It is still another object of the present invention to provide a portable switch type variable power source device which is connected to a secondary winding region of a low voltage conversion portion and rectifies a low voltage AC power outputted from a low voltage conversion portion to DC by a rectifying portion.

It is still another object of the present invention to provide a switching unit which is provided with a mode changeover switch configured to fix and convert a frequently used output voltage value and a voltage adjustment switch that can be adjusted to a voltage value other than a fixed set voltage value .

The switching unit of the portable switch type variable power source apparatus according to the present invention divides the voltage value of DC 1 to 40V rectified by the rectifying unit by the mode conversion switch into six levels from 0 to 5, The present invention provides a portable switch type variable power source device in which five frequently used voltages are designated and used, and a '0' level is set as a free voltage.

It is still another object of the present invention to provide a portable switch type variable power supply device in which the main control unit (MCU) is configured to control the frequency of the switching unit and output voltage while converting an analog signal applied from the switching unit into a digital signal, .

The main control unit of the portable switch type variable power source apparatus of the present invention is further provided with a portable switch type variable power source apparatus further comprising a display unit having a mode display unit for displaying a mode and a voltage display unit for displaying a DC voltage to be outputted.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a portable switch type variable power source device including a body case, an AC input terminal, a low voltage conversion unit, a rectifying unit, a switching unit, a main control unit, a DC output terminal, .

Another aspect of the portable switch type variable power source device of the present invention is that the main body case has a hexahedron shape and an AC input terminal to which AC power is inputted from the outside is provided on one side and a 110V to 220V commercial AC power source Is input.

A slit-shaped cooling hole and a cooling fan are provided on the side surface of the main body case of the portable switch type variable power source apparatus of the present invention for cooling the internal heat, and a DC output terminal And the DC output terminal includes a ground terminal that is a (-) pole.

Another feature of the portable switch type variable power source device of the present invention is that a PCB substrate including a low voltage conversion unit, a rectifying unit, a switching unit, and a main control unit is installed inside the main body case.

Another characteristic of the portable switch type variable power source device of the present invention is that the low voltage conversion unit receives a commercial AC power source as a primary winding and transforms the primary power source to a secondary winding by an electromagnetic induction action to output a low voltage.

Another aspect of the portable switch type variable power source apparatus of the present invention is that the rectifying section is connected to the secondary winding region of the low voltage converting section and rectifies the alternating current power in the low voltage state outputted from the low voltage converting section to DC.

Another characteristic of the portable switch type variable power source device of the present invention is that the switching unit is provided with a mode change switch configured to be able to change and set a frequently used output voltage value with a fixed value, And a voltage adjustable switch.

The switching unit of the portable switch type variable power source apparatus according to the present invention divides the voltage value of DC 1 to 40V rectified by the rectifying unit by the mode change switch into six levels from 0 to 5, 5 'frequently used voltages are designated and used, and the' 0 'level is set to free voltage so that the user can use up and down voltages required by the voltage adjustment switch and use the voltage.

In addition, the output current is fixed to 1 A by applying a flyback method to the power unit including the rectifying unit and the switching unit of the portable switch type variable power supply of the present invention.

Another characteristic of the portable switch type variable power source apparatus of the present invention is that the main control unit (MCU) converts the analog signal applied from the switching unit into a digital signal while controlling the frequency control and the output voltage to the switching unit .

The main control unit of the portable switch type variable power source of the present invention is characterized by having an analog-to-digital converter (ADC) for converting the analog signal applied from the switching unit into a digital signal.

The main control unit of the portable switch type variable power supply according to the present invention is further characterized in that a display unit having a mode display unit for displaying a mode and a voltage display unit for displaying a DC voltage to be outputted is further comprised.

As described above, the portable switch type variable power source apparatus of the present invention fixes the output current to 1 A by applying a flyback method to the power portion including the rectifying portion and the switching portion. Therefore, it is possible to make it smaller and lighter than other products that have diversified output current, so that it is easy to carry and load because of its portability.

The portable switch type variable power source device of the present invention can be set as a mode change switch by dividing the output voltage of 1V to 40V into '0 to 5' in six stages. Particularly, '0' , The required voltage can be adjusted down. Therefore, it has excellent adaptability to supply electric power in response to electric devices and experiment devices in various places except laboratories and laboratories.

1 is a schematic perspective view showing a portable switch type variable power source device of the present invention.
2 is a schematic view showing a front portion of a main body case of a portable switch type variable power source device of the present invention.
3 is a schematic diagram showing a portable switch type variable power source device of the present invention.
4 is a circuit diagram showing a portable switch type variable power source device of the present invention.

The specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic perspective view showing a portable switch type variable power source device of the present invention, FIG. 2 is a schematic view showing a front face portion of a main body case of the portable switch type variable power source device of the present invention, FIG. 4 is a circuit diagram of a portable switch type variable power source device of the present invention. FIG.

1 and 2, the portable switch type variable power source device of the present invention includes a main body case 10, an AC input terminal 20, a low voltage conversion unit 100, a rectification unit 200, a switching unit 300, A main control unit 400, a DC output terminal 30, and a display unit 500.

The main body case 10 of the portable switch type variable power source device of the present invention has a hexahedron shape and an AC input terminal 20 to which AC power is inputted from the outside is provided on one side.

110 V to 220 V commercial AC power is input to the AC input terminal 20 of the portable switch type variable power source apparatus of the present invention.

A slit-shaped cooling hole (not shown) and a cooling fan 11 are provided on the side surface of the main body case 10 of the portable switch type variable power source device of the present invention for cooling the internal heat.

A DC output terminal 30 for outputting DC power is provided on the other side of the main body case 10 of the portable switch type variable power source device of the present invention.

The DC output terminal 30 of the portable switch type variable power supply of the present invention includes a ground terminal which is a (-) pole.

The DC output terminal 30 of the portable switch type variable power supply according to the present invention is supplied with a DC voltage of 1 to 40 V and a current of 1A required by the user according to the mode converted by the switching unit 300.

The main body case 10 of the portable switch type variable power source device of the present invention is formed of a polypropylene resin which is lightweight, has good heat resistance, and is resistant to an external impact.

3, a PCB 10 including a low voltage transformer 100, a rectifier 200, a switching unit 300, and a main controller 400 is disposed inside the main body case 10 of the portable switch type variable power source device of the present invention. A substrate (not shown) is provided.

The low voltage conversion unit (100) of the portable switch type variable power supply device of the present invention receives a commercial AC power source as a primary winding and transforms it into a secondary winding by an electromagnetic induction action to output a low voltage.

The rectifying part 200 of the portable switch type variable power supply device of the present invention is connected to the secondary winding area of the low voltage conversion part 100 and supplies the alternating current power of the low voltage state output from the low voltage conversion part 100 to four diodes Connected in a bridge shape and rectified by DC.

A flyback system is applied to the power unit 200 'including the rectifying unit 200 and the switching unit 300 of the portable switch type variable power supply of the present invention to fix the output current to 1 A.

A constant voltage unit (not shown) is provided between the rectifying unit 200 and the switching unit 300 of the present invention to apply a constant voltage to the switching unit 300 so that the rectified power is supplied through the rectifying unit 200.

The switching unit 300 of the portable switch type variable power supply according to the present invention includes a mode changeover switch 301 configured to set and convert a frequently used output voltage value at a fixed frequency, And a voltage adjustment switch 302 which can be adjusted by the voltage adjustment switch 302.

The switching unit 300 of the portable switch type variable power source apparatus according to the present invention divides the voltage value of DC 1 to 40 V rectified by the rectifying unit by the mode change switch 301 into '0 to 5' in six stages.

The '0' step, which is the lowest level of the mode changeover switch 301 of the switching unit 300 of the present invention, can be set to free voltage so that the user can adjust the voltage required by the voltage adjustment switch 302.

The main control unit (MCU) 400 of the portable switch type variable power supply of the present invention converts the analog signal applied in the switching unit into a digital signal while controlling the frequency control and the output voltage to the switching unit 300 .

The main control unit (MCU) 400 of the portable switch type variable power supply of the present invention has an analog-to-digital converter (ADC) for converting an analog signal applied from the switching unit 300 into a digital signal.

The main control unit (MCU) 400 of the portable switch-type variable power supply of the present invention further includes a display unit 500 for displaying the output voltage of the constant voltage.

The display unit 500 of the present invention includes a mode display unit 501 for displaying a mode number selected by the mode change switch 301 and a voltage display unit 502 for displaying a voltage value set by the user .

The mode changeover switch 301 according to the present invention is connected between the constant voltage unit (not shown) and the DC output and is connected to the main control unit 400 and is set in a stepwise manner to match the reference voltage set in the main control unit 400, .

The switching unit 300 of the present invention stores a preset reference voltage to correspond to the switching mode so that the user can operate it.

The portable switch type variable power source of the present invention has the following advantages.

The present invention applies a flyback method to the power unit 200 'including the rectifying unit 200 and the switching unit 300 to fix the output current to 1 A.

Therefore, it is possible to make it smaller and lighter than other products that have diversified output current, so that it is easy to carry and load because of its portability.

In the present invention, the output voltage 1V to 40V is divided into 6 stages from 0 to 5, and the '1 to 5' stage has a mode changeover switch 301 which can select 5 voltages, &Quot; step up and down the voltage adjustment switch 302 as a free bolt to adjust the required voltage.

Therefore, it has excellent adaptability to supply electric power in response to electric devices and experiment devices in various places except laboratories and laboratories.

10: Body case
11: Cooling fan
20: AC input terminal
23: Input cable
30: DC output terminal
31: Output power ON switch
32: Output power OFF switch
33: Output cable
100: Low voltage conversion section
200: rectification part
200 ': power unit
300:
301: Mode changeover switch
302: Voltage adjustment switch
400: main control unit (MCU)
500:
501: Mode indicator
502: voltage display section

Claims (5)

In the variable power supply,
A body case 10 having a rectangular parallelepiped shape;
An AC input terminal 20 through which AC power is input from the outside to one side of the main body case;
A low voltage conversion unit (100) located inside the main body case and converting electricity applied from the AC input terminal;
A rectifying unit 200 for rectifying the AC converted by the low voltage converting unit to a direct current, and a rectifying unit connected to the rectifying unit for dividing the voltage value of DC 1 to 40V into six levels from 0 to 5, A switching unit 300 having a voltage adjustment switch 302 for setting up a set voltage value up and down and a mode changeover switch 301 for setting and setting a high frequently used output voltage value, A power unit 200 'for fixing the output current to 1 A by applying a flyback method to the alternating current converted by the low voltage converting unit;
A main controller 400 for controlling the frequency of the switching unit and controlling an output voltage thereof, converting the analog signal applied from the switching unit into a digital signal and receiving the digital signal;
And a DC output terminal (30) for outputting DC power to another side surface of the main body case,
The main control unit 400 further includes a display unit 500 having a mode display unit 501 for displaying a mode and a voltage display unit 502 for displaying a DC voltage to be outputted. Device.

















delete delete delete delete
KR1020150156465A 2015-11-09 2015-11-09 Variable switch-type portable power supply KR101724275B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150156465A KR101724275B1 (en) 2015-11-09 2015-11-09 Variable switch-type portable power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150156465A KR101724275B1 (en) 2015-11-09 2015-11-09 Variable switch-type portable power supply

Publications (1)

Publication Number Publication Date
KR101724275B1 true KR101724275B1 (en) 2017-04-10

Family

ID=58581029

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150156465A KR101724275B1 (en) 2015-11-09 2015-11-09 Variable switch-type portable power supply

Country Status (1)

Country Link
KR (1) KR101724275B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0888943A (en) * 1994-09-14 1996-04-02 Tamura Seisakusho Co Ltd Output voltage regulating circuit
JP2001161063A (en) * 1999-11-30 2001-06-12 Fujitsu Denso Ltd Output voltage variable power supply
KR20070117933A (en) * 2006-06-09 2007-12-13 동국대학교 산학협력단 Power supply for testing communication equipment
KR100913377B1 (en) 2009-04-06 2009-08-20 (주)삼일피엔유 A variable power supply device of an adapter style
KR20150057044A (en) 2013-11-18 2015-05-28 (주)삼일피엔유 Variable power supply device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0888943A (en) * 1994-09-14 1996-04-02 Tamura Seisakusho Co Ltd Output voltage regulating circuit
JP2001161063A (en) * 1999-11-30 2001-06-12 Fujitsu Denso Ltd Output voltage variable power supply
KR20070117933A (en) * 2006-06-09 2007-12-13 동국대학교 산학협력단 Power supply for testing communication equipment
KR100913377B1 (en) 2009-04-06 2009-08-20 (주)삼일피엔유 A variable power supply device of an adapter style
KR20150057044A (en) 2013-11-18 2015-05-28 (주)삼일피엔유 Variable power supply device

Similar Documents

Publication Publication Date Title
JP5816348B2 (en) Power controller
Zhang et al. A primary-side control scheme for high-power-factor LED driver with TRIAC dimming capability
JP6145825B2 (en) Light emitting diode drive device and semiconductor device
JP6403042B2 (en) Power supply apparatus and lighting apparatus using the same
US10064248B2 (en) Light fixture with ferroresonant transformer power source
US9190917B2 (en) Isolated flyback converter for light emitting diode driver
JP5761301B2 (en) Lighting device and lighting apparatus
CN109889062B (en) Power converter and method of controlling power converter
TW201924203A (en) Merged voltage-divider forward converter
TWI523395B (en) Control methods for clock frequency in a switched mode power supply and relevant power controllers
EP2854274A3 (en) Power supply circuit and luminaire
EP2608381A3 (en) AC-DC converter
US20150002044A1 (en) Power supply device and control circuit thereof
US10334673B2 (en) Lighting system
KR101724275B1 (en) Variable switch-type portable power supply
KR200482417Y1 (en) Flicker free power supply for LED lamp
TWI581551B (en) Multi-output switching power converter
CN105706349B (en) For providing the device and method for adjusting electric current to electrical load
TWI795426B (en) Device and method for providing an electrical current to an electrical load
KR100386865B1 (en) Power circuit with smoothing choke coil inductance varying circuit
KR101441001B1 (en) Method and apparatus for multi-output voltage of switching mode power supply
EP2552002A1 (en) Transformerless AC to DC power circuit with a voltage divider at its input
KR100816842B1 (en) Power supply using synchronous rectifier
KR101315117B1 (en) Method for sensing state of output load change in a primary-regulated switched mode power supply, and apparatus for performing the method
WO2019117205A1 (en) Light-emitting diode drive device

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant