KR19990050055A - Output power multiplexing device of personal computer - Google Patents

Abstract

The present invention can be used inside the personal computer to draw different levels of DC power from each output terminal of the SMPS for supplying the driving power of the personal computer, and draw it from the outside of the personal computer to be used as the driving power of other equipment. The present invention relates to an output power multiplexing device of a personal computer, which includes a rectifier (1) for filtering noise components contained in the AC power while converting the AC power into a DC power, and input power by the feedback power supplied. A power supply unit having a transformer unit 2 for transforming into a DC power source having a different level, and a rectifying / smoothing unit 3-1 and 3-2 for rectifying / smoothing the power output from the transformer unit 2; The rotary switch 4-1 (4-2) (4-3) supplied with DC power of different levels output from the rectification / smoothing unit (3-1) (3-2), and this rotary Switch (4-1) (4-2) (4-3) It is characterized by consisting of output terminals (5-1) (5-2) (5-3) for receiving a different level of DC power depending on the position of the supply to the peripheral device.

Description

Output power multiplexing device of personal computer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output power multiplexing device of a personal computer. More particularly, the present invention relates to an SMPS (switch mode power supply, hereinafter referred to as " SMPS ") installed inside a personal computer to supply driving power of the personal computer. The present invention relates to an output power multiplexing device of a personal computer which draws DC power at different levels from each output terminal, and draws it from the outside of the personal computer to be used as a driving power source for other equipment.

Inside the personal computer, there are built-in SMPS for supplying different levels of power for driving the personal computer, and various components constituting the personal computer operate normally.

In order to maximize the efficiency of the personal computer, a plurality of peripheral devices are connected and used, for example, a monitor, a printer, a scanner, and the like. However, when the peripheral device is used as described above, the driving power must also be supplied to the peripheral device. However, since the power used by each peripheral device is different, a plurality of adapters must be used.

That is, since a plurality of adapters must be used to supply driving power to each peripheral device, electrical wiring becomes complicated, and this may cause safety accidents. In addition, when a different level of driving power is supplied to a peripheral device using different levels of driving power, the peripheral device may not be driven or the peripheral device may malfunction.

An object of the present invention for solving this drawback is to draw different levels of DC power from each output terminal of the SMPS which is installed inside the personal computer and supplies the driving power of the personal computer, and withdraws it from the outside of the personal computer. Provided is an output power multiplexing device for a personal computer that can be used as a driving power source for other equipment.

That is, it is an object of the present invention to obtain driving power of peripheral devices such as a monitor, a printer, a scanner, and the like used in connection with a personal computer.

The output power multiplexing apparatus of the personal computer of the present invention for achieving the above object draws different levels of power from the output terminal of the SMPS for supplying driving power to the personal computer, and connects it to the rotary switch. It is characterized in that the different levels of power selected by the supply to the output terminal exposed to the outside of the main body case can be supplied to the peripheral device.

1 is a circuit diagram according to the present invention.

2 is a schematic diagram showing an installation state of a rotary switch and an output terminal.

Explanation of symbols on the main parts of the drawings

1: rectification part 2: trans part

2-1: PWM control IC 3-1,3-2: Rectifier / Smoothing

4-1,4-2,4-3: Rotary switch 5-1,5-2,5-3: Output terminal

6: monitor power output terminal 7: body case

BD: Bridge Diode T: Trans

C1 to C5: Capacitors D1, D2: Diode

TR: Transistor

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the output power multiplexing apparatus of a personal computer according to the present invention.

1 is a circuit diagram according to the present invention, the rectifying unit (1) for filtering the noise components contained in the AC power while converting the AC power to DC power, and the input power of the DC power at different levels by the feedback power supplied In the power supply apparatus which has the transformer part 2 transformed into a power supply, and the rectification | smoothing rectification / smoothing part 3-1 (3-2) which rectifies / smoothes the power output from this transformer part 2, this rectification is carried out. Rotary switches (4-1) (4-2) (4-3) supplied with DC power of different levels output from the smoothing unit (3-1) (3-2), and the rotary switch (4- 1) It is composed of output terminals 5-1, 5-2 and 5-3 which receive DC power of different levels and supply them to peripheral devices according to the positions of (4-2) and (4-3).

Fig. 2 is a schematic view showing a main body case 7 for a personal computer according to the present invention, with rotary switches 4-1, 4-2, 4-3 and output terminals 5-1, 5-2. (5-3) is exposed to the outside of the main body case (7) so that the output power can be adjusted from the outside, while driving power of other peripheral devices is output terminals (5-1) (5-2) (5-3) Make it easier to withdraw from.

The operation of the present invention configured as described above will be described.

The transformer T into which the rectified / smoothed power is input by the bridge diode BD and the capacitor C1 is inputted by the winding ratios of the primary side and the secondary side. It supplies to (3-1) (3-2).

At this time, the PWM control IC 2-1 drives the transistor TR by a power supply fed back from the secondary side of the transformer T to adjust the output level of the transformer T.

The output power of the transformers T of different levels rectified and smoothed by the rectifying / smoothing sections 3-1 and 3-2 is supplied to the driving power of the personal computer and at the same time, the respective rotary switches 4-1. It is supplied to (4-2) (4-3).

The power supplied to the rotary switches 4-1, 4-2, and 4-3 is output at different levels according to the positions of the rotary switches 4-1, 4-2, and 4-3. (5-1) (5-2) (5-3), so you can connect other peripherals to the output terminals (5-1) (5-2) (5-3) to supply the drive power of the peripherals. Can be.

That is, the user can select different levels of power to supply peripheral devices by operating rotary switches 4-1, 4-2, and 4-3 without using a separate adapter that outputs different levels of power. Can be.

Preferably, if the level of the output power output from the transformer is diversified and connected to the rotary switch and then supplied to the peripheral device, the power of each level can be supplied to the peripheral device.

As described above, the present invention connects the output power of the different levels of the SMPS for supplying the driving power to the personal computer to the rotary switch, draws it to the output terminal exposed to the outside of the main body case, and supplies it to the peripheral device. Can be used as driving power for peripheral devices.

That is, the present invention has the advantage that it is not necessary to provide a separate adapter when using a plurality of peripheral devices by using a different level of power drawn from the main body of the personal computer as a drive power of a peripheral device using a different level of drive power. .

Claims (2)

A rectifier 1 for filtering noise components included in the AC power while converting AC power into DC power, and a transformer 2 for transforming the input power into DC power at different levels by the feedback power being fed back; A power supply having a rectification / smoothing portion (3-1) (3-2) for rectifying / smoothing power output from the transformer portion (2), Rotary switches (4-1) (4-2) (4-3) to which DC power of different levels supplied from the rectifying / smoothing (3-1) (3-2) are supplied; Output terminals (5-1) (5-2) (5-) receiving DC power at different levels and supplying to peripheral devices according to the positions of the rotary switches (4-1) (4-2) (4-3). And 3) an output power multiplexing device for a personal computer. The rotary switch (4-1) (4-2) (4-3) and the output terminals (5-1) (5-2) (5-3) according to claim 1 are placed outside the main body case (7). An output power multiplexing device for a personal computer, characterized by being exposed to installation.