CN2541974Y - Universal power supply - Google Patents

Abstract

A universal power supply includes a power connection terminal, connected to a power source and outputting a DC voltage; a charging connection terminal, which is configured as a plug connected to a product to be charged; the power connection terminal is connected to an automatic voltage regulator, which includes: a DC voltage converter that converts an AC power source into a required DC power source and is connected to a power/signal connection hole; a feedback control voltage output circuit, connected to the DC voltage converter, which compares the feedback voltage signal of the power/signal connection hole and makes the DC voltage converter output a predetermined voltage; the other end of the charging connection terminal is configured as a power/signal connector connected to the power/signal connection hole of the automatic voltage regulator, so that it is electrically conductive and a required voltage parameter is preset. The utility model can provide different output voltages for different electronic products to achieve the effect of one thing for multiple uses.

Description

Universal power supply

technical field

The utility model relates to a power supply for various portable electronic products, in particular to a universal power supply capable of providing different output voltages for different electronic products so as to achieve one thing with multiple functions.

Background technique

Due to the rapid development of technologies such as optoelectronics, communications, and digital technology, electronic products such as personal digital assistants (PDAs), digital cameras, mini-disc players, game consoles, and mobile phones have gradually become popular, and their volumes are getting smaller and smaller, making them very portable. Convenience has become a necessity for daily life or business contacts. However, after these products are exhausted, they must be charged before they can continue to be used, but the voltage required by the chargers of each product is different, only in terms of mobile phones, such as Motorola, Nokia, Ericsson, Panasonic mobile phones, The charging voltage is different, some need 4.2V, some need 4.5V DC voltage to use; and the rest of the products such as PDA or digital camera have the same situation.

Therefore, when going on a business trip or traveling far away, various portable electronic products must carry a dedicated transformer and charger to perform battery charging work. However, it is quite inconvenient to carry these items.

Contents of the invention

In order to overcome the disadvantage that various existing portable electronic products must carry special transformers and chargers to charge the batteries, resulting in inconvenient portability, the utility model provides a universal power supply, which can be used for different electronic products , providing different output voltages to achieve the effect of one thing with multiple functions.

The technical scheme that the utility model solves its technical problem adopts is:

A universal power supply, comprising: a power connection terminal, which is connected to a power supply and outputs a DC voltage; a charging connection terminal, which is in the form of a plug connected to a product to be charged; it is characterized in that the power connection terminal Conducted with an automatic voltage regulator, the automatic voltage regulator includes: a DC voltage converter that converts the AC power into the required DC power, and is connected with the power supply/signal connection hole; a feedback control voltage The output circuit is connected with the DC voltage converter, and after comparing the feedback voltage signals of the power supply/signal connection hole, the DC voltage converter is output with a predetermined voltage; the charging connection terminal, the other end of the wire, is set as The power/signal connector connected to the power/signal connection hole of the automatic voltage regulator makes it electrically conductive and presets a required voltage parameter.

The beneficial effect of the utility model is that it can provide different output voltages for different electronic products, so as to achieve the multi-purpose effect of one thing.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is one of appearance diagrams of the utility model (used in AC power supply).

Fig. 2 is the second appearance diagram of the utility model (used in vehicle power supply).

Fig. 3 is a schematic diagram of the connection relationship of the components of the present invention.

Fig. 4 is a diagram of the usage state of the utility model applied to a mobile phone.

Fig. 5 is a diagram of the use status of the utility model applied to the game machine.

Fig. 6 is the implementation circuit diagram of the utility model.

Detailed ways

At first, please refer to shown in Fig. 1～3, the utility model comprises:

A power connection terminal (10a or 10b) is connected to a power supply and outputs a DC voltage; wherein, the power connection terminal (10a) is connected to an AC power supply, and a rectifier (11) must be used to rectify the AC power supply into a DC power supply and reduce voltage; the power connection terminal (10b) is directly connected to the vehicle power supply.

A charging connection terminal (12), which is set in the form of a plug connected to the product to be charged, has a variety of different connection types, and as shown in Figures 4 and 5, is used in various electronic products;

It is characterized by:

The voltage output by the power connection terminal (10a or 10b) passes through an automatic voltage regulator (13), and the automatic voltage regulator (13) includes:

A DC voltage converter (131), which converts the input voltage into a required voltage, and then transmits it to the power supply/signal connection hole (132);

A feedback control voltage output circuit (133), after comparing the power supply/signal with the feedback voltage signal of the connection hole (132), makes the DC voltage converter (131) output a predetermined voltage;

This charging connection terminal (12), the other end of its electric wire (121), is set to the power supply/signal connector (122) that can be connected with the power supply/signal connection hole (132) of automatic voltage regulator (13), makes it Electrical conduction, and preset a required voltage parameter (123).

Moreover, the DC voltage converter (131) and the feedback control voltage output circuit (133) of the power supply connection terminal (10a), the rectifier (11) and the automatic voltage regulator (13) are installed in the casing (14a ); the power connection terminal (10b), the DC voltage converter (131) and the feedback control voltage output circuit (133) of the automatic voltage regulator (13) are installed in the housing (14b).

Its above-mentioned structure, see also shown in the circuit of Fig. 6 again, the automatic voltage regulator (13) of the present utility model is that the DC power inputted by the power connection terminal (10a or 10b) is passed through a DC voltage converter ( 131) Adjusting the output voltage, the DC voltage converter (131) mainly includes a voltage stabilizing integrated circuit chip IC (134) whose model is 34063, which is connected to the power connection terminal (10a or 10b) with the sixth pin, and is controlled by The first and fifth pins are connected to the power supply/signal connection hole (132). In addition, the voltage stabilizing integrated circuit IC (134) is connected with an inductor (L1), a capacitor (C1), and resistors (R2), (R3), The diode (D1) constitutes a current limiting circuit and an oscillation circuit respectively.

Also, the feedback control voltage output circuit (133) is connected between the DC voltage converter (131) and the output power supply/signal connection hole (132), and it includes two power transistors (Q1), (Q2) and Five resistors (R4)-(R8), wherein the resistors (R4), (R5) are voltage dividing points (135) for controlling the output voltage; the charging connection terminal (12) takes a variable resistor (VR1) as the voltage parameter (123), when the power supply/signal connector (122) was connected with the connection hole (132), the charging connection terminal (12) will use the required voltage parameter (135), through the voltage dividing point of (R4), (R5) (135) Feedback from the fifth contact to the voltage stabilizing integrated circuit IC (134), and then the voltage stabilizing integrated circuit IC (134) controls the inductance (L1) to adjust the voltage output, so that the output is to the charging connection terminal (122) The charging voltage is the predetermined voltage required by the article to be charged.

By means of the above technical means, the utility model has the following effects:

1. The voltage input from the power supply connection terminal (10a or 10b) passes through the automatic voltage regulator (13), and then the voltage parameter is fed back by the charging connection terminal (12), which can control the output voltage to the product to be charged (M) ; Therefore, the product to be charged (M) can obtain the most appropriate charging voltage, so it has the best charging efficiency and can ensure the service life of the product.

2. Since the specifications of the power supply connection terminal (10a or 10b) will not change, and the constituent circuit of the automatic voltage regulator (13) will not change, therefore, there is no need to replace it for different products. The charging connection terminal (12) that needs specification, for example the required charging voltage of mobile phone is 4.2V, then the variable resistance (VR1) built-in in its charging connection terminal (12) provides predetermined voltage parameter (123), can make voltage automatically The regulator (13) outputs a DC voltage of 4.2V. Therefore, if a user owns different products such as a mobile phone, a PDA, and a digital camera at the same time, he only needs a set of power supplies, and does not need to purchase commercially available transformers and charging stands with different output voltages. As for the charging connection terminal (12), because of its small size and low cost, and each product is listed as an accessory, it is very convenient to use, avoids waste, and achieves the multi-purpose effect of one thing.

Therefore, the utility model makes full use of the readily available AC power supply or vehicle power supply, so that it can be used as a power supply for various portable electronic products, and can exert maximum benefit and convenience.

To sum up, the structure disclosed by the utility model is unprecedented, and can indeed achieve the expected effect, and has value for industrial use, and fully meets the requirements of the new patent.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (1)

1, a kind of universal power source supply device comprises power connector end, is connected with power supply; The charging splicing ear is to be set as the plug kenel that is connected with product to be charged; It is characterized in that described power connector end is conducted with an automatic voltage regulator, this automatic voltage regulator includes: one converts AC power the dc voltage changer of required DC power supply to, and is conducted with power supply/signal connecting hole; One back coupling control voltage follower circuit is connected with described dc voltage changer; Described charging splicing ear, the other end of its electric wire is set as the power supply/signal connector that is connected with the power supply/signal connecting hole of described automatic voltage regulator.

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