KR200279465Y1 - Power supply apparatus for usb and cd-rom - Google Patents

Abstract

USB and CD-ROM combined power supply according to the present invention, the voltage regulator (3) for outputting by adjusting the DC voltage supplied from the outside to two or more voltages; A cord assembly (35-37) for supplying external DC power to the voltage regulator (33); CD-ROM code assemblies 31 and 32 for outputting the first and second regulated voltages of the voltage regulator to the CD-ROM drive 4; A USB cord assembly (51-53) for outputting the second regulated voltage of the voltage regulator to the USB device (5); The voltage regulator 3 includes a plug PJ1 and PJ2 into which an external DC power supply terminal is inserted, and a rectifying and smoothing unit 10 for rectifying and smoothing the power supplied through the plug from a cigar jack or an adapter. 10 '), the first regulator unit 20, 20' for adjusting the voltage from the rectifying and smoothing unit 10, 10 'to a first adjustment voltage, and the first regulation voltage of the first regulator. A CD-ROM connected to the second regulator portion 30 for adjusting to a second adjustment voltage and the first and second regulator portions 20 (20 ', 30) for outputting the first and second adjustment voltages; It is characterized in that it comprises an output unit 40 and a USB connection unit 50 which is connected to the second regulator unit 30 and outputs the second adjustment voltage.

Description

Power supply unit for both USB and CD-RMO {POWER SUPPLY APPARATUS FOR USB AND CD-ROM}

The present invention relates to a USB and CD-ROM combined power supply, and more particularly to a device for supplying power to a CD-ROM or USB device using a car cigarette lighter or home adapter.

A vehicle CD player using a CD-ROM drive is disclosed (see Korean Utility Model Publication No. 20-166599), which is configured by installing a computer CD drive in an instrument panel of a vehicle equipped with a cassette recorder. . In addition, a code assembly electrically connected to the cigarette lighter socket of the vehicle, a power regulator electrically connected to the code assembly and controlling the power supplied from the cigarette lighter socket and supplied to the CD-ROM drive, a power regulator and a CD-ROM drive electrically And a cassette adapter which connects the CD-ROM drive and the cassette recorder to output audio signals.

On the other hand, as a mobile phone charging device using USB is disclosed (see Korean Utility Model Publication No. 20-211505), the mobile phone charging device having a USB port terminal and a data communication port terminal of the mobile phone, Switching means connected in series between a USB port terminal and the data communication port terminal, means for dividing an output voltage of the data communication port terminal at a constant ratio, and means for comparing the divided voltage with a reference voltage, The switching means is connected to the comparison means and repeats the on / off operation. The charging device includes a resistor connected in series between the USB port terminal and the switching means and a current detection circuit connected in parallel across both ends of the resistance. It includes more.

However, all of them are developed to be used only for one purpose, and each device also has a problem in that it is limited in application because it is supplied with power only from a car or a computer.

The present invention is to solve the above problems, the object of the present invention is to supply power from a car or other general home power adapter can supply USB power to a mobile phone charger or MP3 player as well as a CD-ROM drive. It is to provide USB and CD-ROM combined power supply developed.

Further objects or effects of the present invention will become more apparent from the following detailed description of the invention described with reference to the accompanying drawings.

1 is an overall schematic block diagram of a power supply system using a USB and CD-ROM combined power supply according to the present invention.

Figure 2 is a product picture of a USB and CD-ROM combined power supply according to the present invention.

3 is a circuit diagram of the voltage regulator of FIG.

Figure 4 is an example of a USB connection assembly used in the USB and CD-ROM combined power supply according to the present invention.

5 is a circuit diagram of another embodiment corresponding to the circuit diagram of the voltage regulator of FIG.

<Description of the symbols for the main parts of the drawings>

1: vehicle cigarette jack 2: external power adapter

3: USB and CD-ROM power supply unit 4: CD-ROM

5: mobile phone charger

10, 10 ': rectification and smoothing unit 20, 20': first regulator unit

30: 2nd regulator part 31: CD-ROM connection connector

32: CD-ROM connection code 33: Voltage regulator

34: USB Output Connector 35: Adapter Jack

36: Spring Code 37: Cigar Jack

40: CD-ROM output section

50: USB connector 51: USB connector

52: USB connection cord 53: Mobile phone connector

USB and CD-ROM combined power supply according to the present invention for achieving the above object, the voltage regulator (3) for adjusting the DC voltage supplied from the outside to more than two voltages; A cord assembly (35-37) for supplying external DC power to the voltage regulator (33); CD-ROM code assemblies 31 and 32 for outputting the first and second regulated voltages of the voltage regulator to the CD-ROM drive 4; A USB cord assembly (51-53) for outputting the second regulated voltage of the voltage regulator to the USB device (5); The voltage regulator 3 includes a plug PJ1 and PJ2 into which an external DC power supply terminal is inserted, and a rectifying and smoothing unit 10 for rectifying and smoothing the power supplied through the plug from a cigar jack or an adapter. 10 '), the first regulator unit 20, 20' for adjusting the voltage from the rectifying and smoothing unit 10, 10 'to a first adjustment voltage, and the first regulation voltage of the first regulator. A CD-ROM connected to the second regulator portion 30 for adjusting to a second adjustment voltage and the first and second regulator portions 20 (20 ', 30) for outputting the first and second adjustment voltages; It is characterized in that it comprises an output unit 40 and a USB connection unit 50 which is connected to the second regulator unit 30 and outputs the second adjustment voltage.

Preferably, the rectifying and smoothing unit 10 is composed of a rectifying diode (D1) and capacitors (C1, C4), the first regulator unit 20, the first regulator IC (U1) and the capacitor ( C2, C5, and the second regulator unit 30 is composed of a second regulator IC (U2) and capacitors (C3, C6), the terminal of the CD-ROM output unit 40 is a first The first terminal connected to the output terminal of the regulator unit, the second terminal connected to the output terminal of the second regulator unit and two ground terminals, the USB connection unit 50 is composed of a USB output connector 34 (U3), Terminal 1 is connected to the output terminal of the second regulator unit, terminal 4 is the ground terminal, characterized in that the signal terminals 2 and 3 are floated.

Also preferably, the rectifying and smoothing unit 10 'includes a rectifying diode D1 and a capacitor C1, and the first regulator unit 20' includes at least two diode strings D20-. D4) and capacitors C2 and C5, and the second regulator unit 30 includes a second regulator IC U2 and capacitors C3 and C6, and the CD-ROM output unit 40. The terminal of is composed of a first terminal connected to the first regulator unit, a second terminal connected to the output terminal of the second regulator unit and two ground terminals, and the USB connection unit 50 is a USB output connector 34 (U3). The terminal 1 is connected to the output terminal of the second regulator, the terminal 4 is a ground terminal, and the signal terminals 2 and 3 are characterized in that the floating.

Hereinafter, a USB and CD-ROM combined power supply device according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

1 is an overall schematic block diagram of a power supply system using a USB and CD-ROM combined power supply according to the present invention, Figure 2 is a product picture of the USB and CD-ROM combined power supply according to the present invention, Figure 3 2 is a circuit diagram of the voltage regulator of FIG. 2, and FIG. 4 is an example of a USB connection assembly used in a USB and CD-ROM combined power supply apparatus according to the present invention.

First, referring to Figure 1 describes a garden supply system using a USB and CD-ROM combined power supply of the present invention, the USB and CD-ROM combined power supply (3) according to the present invention is a vehicle cigar jack (1) or DC15V Power is supplied from an external power source 2 such as an adapter to supply appropriate power to a CD-ROM drive 4 or a USB power supply 5 such as a mobile phone or an MP3 player.

USB and CD-ROM combined power supply device 3 of the present invention, as shown in Figure 2, the voltage regulator 33, for example, an automobile cigar jack 37, spring cord 36 and adapter jack 35 It is powered by DC 15V by the code assembly.

The USB and CD-ROM power supply unit 3 adjusts the voltage appropriately to the CD-ROM drive through the CD-ROM access cord 32 and the CD-ROM connection connector 31 and to the USB output connector 34. Power supply to the USB device through a USB cord assembly (see FIG. 4) consisting of a USB connection connector 51, a USB connection cord 52, and a cellular phone connection connector 53 connected to each other.

Now, a detailed circuit diagram of the voltage regulator 33 of FIG. 2 will be described with reference to FIG. 3, which is supplied through the plug from a plug PJ1 into which an adapter jack (35 of FIG. 2) is inserted, a cigar jack or an adapter. Rectification and smoothing unit 10 for rectifying and smoothing a power supply (for example, DC15V), and a first regulator unit 20 for adjusting the voltage from the rectifying and smoothing unit 10 to a first adjustment voltage (for example, DC 12V). ) Is connected to the second regulator part 30 and the first and second regulator parts 20 and 30 that adjust the first adjustment voltage of the first regulator to a second adjustment voltage (for example, DC5V). A CD-ROM output section 40 for outputting the first and second adjustment voltages, and a USB connection section 50 connected to the second regulator sections 20, 30 for outputting the second adjustment voltage.

A display unit consisting of a light emitting diode LED1 and a resistor R1 may be further provided at an output terminal of the second regulator unit.

Again, the rectification and smoothing unit 10 will be described in more detail, which is composed of a rectifying diode D1 and capacitors C1 and C4, and the first regulator unit 20 includes a first regulator IC U1. (For example, 78L12) and capacitors C2 and C5, and the second regulator unit 30 is composed of a second regulator IC U2 (for example, 78L05) and capacitors C3 and C6.

The terminal of the CD-ROM output unit 40 is composed of a + 12V terminal connected to the output terminal of the first regulator unit, a + 5V terminal connected to the output terminal of the second regulator unit, and two ground terminals, respectively. It is connected to the CD-ROM connection connector 31 through the CD-ROM connection cord 32 of the to supply power to the CD-ROM drive (4).

On the other hand, the USB connection unit 50 is composed of a USB output connector 34 (U3), the first terminal thereof is connected to the output terminal of the second regulator unit, the fourth terminal is a ground terminal, the second and third signals The terminal is floated. Therefore, power is supplied to the mobile phone charger or the MP3 player through the USB cord assembly 51-53 of FIG. 4.

Therefore, wherever there is a vehicle or a commercial power supply, the power can be used anywhere, and it is possible to supply power to a mobile phone and an MP3 player as well as a CD-ROM drive, thereby enhancing convenience.

Another embodiment of the present invention will now be described with reference to FIG.

In this embodiment, the rectifying and smoothing part 10 'and the first regulator part 20' are different from the embodiment of FIG. That is, the capacitor C4 in FIG. 3 is omitted in the rectifying and smoothing unit 10 ', and in the second regulator unit 20', the first regulator IC U1 in FIG. The third diodes D2-D4 are used.

Therefore, DC 12V power should be input to the plug PJ2 into which the external DC power supply terminal is inserted. At this time, the diode string (D2-D4) is not necessary, but it should be present to reduce the voltage of about 2-3V in the diode string is preferable to prevent overheating of the second regulator IC (U2).

While the present invention has been described with reference to the embodiments shown in the accompanying drawings, the present invention is not limited thereto, and various modifications are possible within a range easily conceived by those skilled in the art. Therefore, the limitation of the present invention should be limited only by the following claims.

As described above, according to the USB and CD-ROM combined power supply of the present invention, wherever there is a vehicle or commercial power supply can be used to receive power, supplying a CD-ROM drive and USB power It is possible to apply to various products.

Claims (3)

A voltage regulator 3 for adjusting and outputting a DC voltage supplied from the outside to two or more voltages; A cord assembly (35-37) for supplying external DC power to the voltage regulator (33); CD-ROM code assemblies 31 and 32 for outputting the first and second regulated voltages of the voltage regulator to the CD-ROM drive 4; A USB cord assembly (51-53) for outputting the second regulated voltage of the voltage regulator to the USB device (5); Including; The voltage regulator 3, Plugs PJ1 and PJ2 into which external DC power supply terminals are inserted, rectification and smoothing units 10 and 10 'for rectifying and smoothing the power supplied through the plug from a cigar jack or an adapter, and the rectifying and smoothing unit ( 10, 10 ') to adjust the voltage from the first regulator to the first regulation voltage 20, 20', and the second regulator to adjust the first regulation voltage of the first regulator to the second regulation voltage ( 30, a CD-ROM output section 40 connected to the first and second regulator sections 20 (20 ', 30) for outputting the first and second adjustment voltages, and the second regulator section. And a USB connection unit (50) connected to (30) to output the second adjustment voltage. The method of claim 1, The rectifying and smoothing unit 10 includes a rectifying diode D1 and capacitors C1 and C4, and the first regulator unit 20 includes a first regulator IC U1 and capacitors C2 and C5. The second regulator unit 30 is composed of a second regulator IC (U2) and capacitors (C3, C6), the terminal of the CD-ROM output unit 40 is connected to the output terminal of the first regulator unit The first terminal to be connected, the second terminal connected to the output terminal of the second regulator unit and two ground terminals, the USB connector 50 is composed of a USB output connector 34 (U3), the first terminal is A power supply for both USB and CD-ROM, characterized in that connected to the output terminal of the second regulator unit, terminal 4 is a ground terminal, and signal terminals 2 and 3 are floated. The method of claim 1, The rectifying and smoothing unit 10 'includes a rectifying diode D1 and a capacitor C1, and the first regulator unit 20' includes at least two diode strings D20-D4 and a capacitor ( C2, C5, and the second regulator unit 30 is composed of a second regulator IC (U2) and capacitors (C3, C6), the terminal of the CD-ROM output unit 40 is a first A first terminal connected to the regulator unit, a second terminal connected to the output terminal of the second regulator unit and two ground terminals, the USB connection unit 50 is composed of a USB output connector 34 (U3), 1 Terminal No. 2 is connected to the output terminal of the second regulator unit, Terminal 4 is a ground terminal, and the signal terminals 2 and 3 are floated, characterized in that the USB and CD-ROM power supply.