CN2283946Y

CN2283946Y - DC power supply appliance

Info

Publication number: CN2283946Y
Application number: CN 96249190
Authority: CN
Inventors: 黄荣明
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-27
Filing date: 1996-12-27
Publication date: 1998-06-10
Anticipated expiration: 2006-12-27

Abstract

The utility model relates to a DC power supply appliance. Except supplying direct current power supply to each assembly of a host, the DC power supply appliance is characterized in that the utility model comprises at least one voltage regulator. The input end of the voltage regulator is connected with the DC output voltage of one of the power supply appliances. The output end of the voltage regulator is connected and provided with at least one voltage selecting switch whose input end is connected with the output end of the voltage regulator. The voltage selecting switch is provided with at least one output end which is connected and provided with a divider resistance and a load resistor. When the selective switch is selected at an output voltage, the contact position between the divider resistance and the load resistance can supply a direct current voltage.

Description

DC power supply

The utility model is a kind of DC power supply, especially refer to a kind of power supply unit of supplying multiple different direct voltages, when electrical equipment such as computer, TV or sound equipment are equipped with periphery when transfer being equipped with, the power line of this peripheral equipment directly can be plugged in power supply unit, make peripheral equipment can not need to take one 110/220 volts supply socket, the manufacturing cost of peripheral equipment also can reduce more simultaneously again.

Existing DC power supply is not provided with the Direct current power source socket (as computer) that uses for its peripheral equipment, when host computer is equipped with peripheral equipment, promptly its power line must be plugged on 110/220 volt of socket of family expenses, and circuits such as the signal line of this peripheral equipment or connecting line, then need to be connected with this host computer, again, though be plugged in because of computer peripheral device on 110/220 volt of socket of family expenses, but computer peripheral device all is made up of electronic component, and the operating voltage of electronic component is the direct voltage that uses below 12 volts, so, this peripheral equipment must be provided with an AC/DC transformer, can change into and can use direct voltage exchanging 110/220 volt of voltage for peripheral equipment, therefore, almost each computer peripheral device needs all within it that portion's circuit is provided with the AC/DC transformer, and existing for this reason DC power supply is used, and is obviously quite undesirable.

In view of this, the creator is engaged in the correlation experience that manufactures a product for many years to this disappearance and foundation, concentrated observational study, and development and Design goes out the utility model finally.

Shortcoming at prior art, one of the purpose of this utility model, provide a kind of DC power supply, this power supply unit can be supplied the direct voltage of multiple different magnitudes of voltage, can directly use for the circuit of peripheral equipment, not only can exempt the socket that these peripheral equipments take 110/220 volt of family expenses, also can allow the AC/DC transformer of peripheral equipment be nonessential device.

Another purpose of the present utility model, provide a kind of DC power supply, this power supply unit is because of can directly supplying the peripheral equipment DC power supply, therefore the power line and the signal line (or other connecting line) of peripheral equipment all can be plugged in the main frame position that is provided with this DC power supply place, so being used of these peripheral equipments and main frame is convenient.

A kind of DC power supply of the utility model, this DC power supply is except that the DC power supply that can supply each assembly of main frame, it is characterized in that comprising :] at least one voltage adjuster, the input of this voltage adjuster is connected with the VD of one of power supply unit, and the output of this voltage adjuster then is equipped with at least one voltage-selected switch; At least one voltage-selected switch, the input of this voltage-selected switch is connected with the output of this voltage adjuster, this voltage-selected switch is provided with at least one output, these outputs are to be equipped with divider resistance and load resistance respectively, when this selector switch was selected at an output voltage, the connecting point position that this divider resistance and load resistance are asked can be supplied a direct current voltage.

For enabling to the purpose of this utility model, shape, structure, device, feature and effect thereof, do further understanding and understanding, for the embodiment conjunction with figs., be described in detail as follows now:

Fig. 1 is a circuit diagram of the present utility model.

Fig. 2 is an enforcement illustration of the present utility model.

Fig. 3 is that of the present utility model another implemented illustration.

The figure number explanation of main element:

Voltage adjuster 1 voltage-selected switch 2 host shells 3

See also shown in Figure 1, the utility model is a kind of DC power supply, especially refer to a kind of spliced eye that on power supply unit, is provided with different direct voltages such as to supply 12 volts, 9 volts, 6.5 volts, 6 volts, 5 volts or 3 volts, make the signal line of peripheral equipment and the position that power line all can be plugged in main frame (this main frame can be computer, TV or sound equipment), not only the signal line (or connecting line) between this peripheral equipment and this main frame is convenient when plugging with power line, also can make that 110/220 volt socket in the family is more abundant in the use simultaneously.

This power supply unit is equipped with a voltage adjuster 1, a voltage-selected switch 2, load resistance R1 and divider resistance R2, R3, R4, R5, R6, R7 outside the primary circuit (not shown) of the direct voltage of its supply main frame; This voltage adjuster 1 can be existing commercially available prod, its input 11 is connected with 12 volts of voltage leads of one of power supply unit, 12 of the outputs of this voltage adjuster 1 are connected with the input 200 of this voltage-selected switch 2, this voltage-selected switch 2 is by a toggle switch 20 and a plurality of contacts 21,22,23,24,25,26 form, the output of these contacts then respectively with this divider resistance R2, R3, R4, R5, R6, the input of R7 is connected, and this divider resistance R2, R3, R4, R5, R6,30 of the output contacts of R7 are connected with the load resistance R1 of an output head grounding.This contact 30 can be connected at least one female spliced eye, or is connected at least one public spliced eye, when this DC power supply is installed in the main frame, can conveniently allow the power line of peripheral equipment plug.

When this toggle switch 20 is connected with this contact 21, then the input 200 of this voltage-selected switch 2 promptly respectively with this output voltage terminal 12, divider resistance R2, form a loop between load resistance R1 and earth terminal, and in position that this divider resistance R2 output and load resistance R1 input join, has the supply voltage output end 30 that to supply direct voltage, and the voltage of this supply voltage output end 30, promptly according to this output voltage 12, this divider resistance R2 value and this load resistance R1 value and decide, in an embodiment, this output voltage 12, in divider resistance R2 and the formed voltage circuit of load resistance R1, the voltage of this supply voltage output end 30 is 12 volts.

In like manner, when toggle switch 20 and this contact 22 (23,24,25,26) when being connected, then the input 200 of this voltage-selected switch 2 promptly forms a loop respectively and between this output voltage terminal 12, divider resistance R3 (R4, R5, R6, R7), load resistance R1 and earth connection, makes this supply voltage output end 30 can supply the direct voltage of 9 volts (6.5 volts, 6 volts, 5 volts or 3 volts).

See also shown in Fig. 2,3, this power supply unit is installed in host shell 3 inside, and the set voltage-selected switch 2 of this power supply unit exposes outside the host shell 3, the user can stir this toggle switch 20 according to the different choice of peripheral equipment working voltage quite easily, and on this voltage-selected switch 2, select correct supply voltage, in addition, for being applicable to that various different peripheral equipment uses the difference of attaching plug caliber size, this supply voltage output end 30 is provided with the spliced eye 300 of multiple different size.

In sum, be used in main frame of the present utility model and not only can make the power line of peripheral equipment and the two diverse location places that signal line does not need to be plugged in respectively computer and 110/200 voltaism supply socket again, do not need power line is plugged in 110/220 volt the supply socket because of peripheral equipment again, make that household outlet in the use can be more abundant, moreover, can directly supply the operating voltage of peripheral equipment because of power supply unit of the present utility model, therefore the internal circuit of peripheral equipment also can no longer must be provided with and exchange the transformer that 110/220 volt of voltage changes direct voltage, can save the manufacturing cost of peripheral equipment, be a splendid design in fact.

Press, the above only is a specific embodiment of the utility model the best, structural feature of the present utility model is not limited thereto, anyly be familiar with this operator in the utility model field, can think easily and variation or modification, all should be encompassed in this case intention design scope.

Claims

1, a kind of DC power supply, this DC power supply is characterized in that comprising except that the DC power supply that can supply each assembly of main frame:

At least one voltage adjuster, the input of this voltage adjuster is connected with the VD of one of power supply unit, and the output of this voltage adjuster then is equipped with at least one voltage-selected switch;

At least one voltage-selected switch, the input of this voltage-selected switch is connected with the output of this voltage adjuster, this voltage-selected switch is provided with at least one output, these outputs are to be equipped with divider resistance and load resistance respectively, when this selector switch was selected at an output voltage, the connecting point position between this divider resistance and load resistance can be supplied a direct current voltage.

2, DC power supply as claimed in claim 1 is characterized in that this contact can be connected at least one female spliced eye, when this DC power supply is installed in the computer, can conveniently allow the power line of peripheral equipment plug.

3, DC power supply as claimed in claim 1 is characterized in that this contact can be connected at least one public spliced eye, when this DC power supply is installed in the main frame, can conveniently allow the power line of peripheral equipment plug.

4, as claim 2 or 3 described DC power supply, it is characterized in that these spliced eye bores that this contact picks out, can be provided with different sizes, supply the power line of different peripheral equipments to plug.

5,, it is characterized in that this main frame can be computer as claim 2 or 3 described DC power supply.

6,, it is characterized in that this main frame can square TV as claim 2 or 3 described DC power supply.

7,, it is characterized in that this main frame can be sound equipment as claim 2 or 3 described DC power supply.