CN2088305U

CN2088305U - Safety universal power supply

Info

Publication number: CN2088305U
Application number: CN91205642U
Authority: CN
Inventors: 甄立新
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-11
Filing date: 1991-04-11
Publication date: 1991-11-06

Abstract

The utility model relates to an external power used for a multifunctional AC-DC transverter, which is in particular suitable for families and similar places. A double-pole double-throw switch is additionally arranged between the output end and the input end of a rectification circuit; a function switch is arranged between the output end of the rectification circuit, which is used for providing DC output, pulsating DC output, and pulsating AC output. The utility model has the advantages of simple circuit, complete function, lighting, charging, shaving, and igniting functions, flexible and convenient use, and safety.

Description

Safety universal power supply

The utility model is a kind of multi-functional AC/DC convertor--the external power supply that is particularly suitable for family and similar site's use.

The external power supply overwhelming majority who sells in the market belongs to the simple function types, be about to the direct current that electric main converts a kind of magnitude of voltage to, often need purchase the external power supply of multiple simple function to the electrical equipment that requires different magnitudes of voltage, use very inconveniently, economy is also poor.Also has a kind of multi-functional external power supply on the market, it is by transformer, 6 voltage-regulation switch and rectification circuit are formed, one end of transformer secondary output is connected with an input of rectification circuit, 6 voltage-regulation switches are connected between another input of the voltage tap end of transformer and rectification circuit, and civil power can be supplied with the direct current of 6 kinds of magnitudes of voltage after its conversion.In addition, all adopt an I-shaped skeleton in their transformer, elementary and secondary being wrapped among the same groove.The deficiencies in the prior art part is: 1, the direct current of different magnitudes of voltage only can be provided, and product itself does not possess illumination functions, uses inconvenient; 2, the dielectric strength of transformer generally is difficult to reach the relative national standards requirement, and security reliability is poor.

The purpose of this utility model is to avoid weak point of the prior art, and provide a kind of and have illumination and exchange, the multi-functional external power supply product of the two or more supply power modes of direct current.

Can realize purpose by following technical scheme.On the basis of existing external power supply, one double-point double-throw switch K3 is installed between the output of rectification circuit and input, with the double-pole of K3 output as this external power supply, between the output of rectification circuit, adorn a multidigit function switch K2, serial connection lighting bulb L is connected in series filter capacitor on one branch road on the branch road of K2.Constitute multi-functional external power supply with illumination and the two or more supply power modes of AC and DC.

In conjunction with the accompanying drawings, embodiment is described in further detail the content of the technical program.

Fig. 1 is high safety universal power supply electrical schematic diagram;

Fig. 2 is a charger accessory power supply schematic diagram;

Fig. 3 is a shaver power connector structural representation;

Fig. 4 is a shaver power connector electrical schematic diagram.

The transformer of high safety universal power supply, voltage-regulation switch, rectification circuit and prior art do not have difference substantially.But an end of transformer B time level is connected with an input of bridge rectifier, selects 8 voltage-regulation K switch 1 for use, and it is connected between another input of the voltage tap end of transformer and rectification circuit, makes transformer have eight kinds of alternating voltages and exports.These eight kinds of alternating voltage outputs are if then can correspondingly obtain the direct current of eight kinds of magnitudes of voltage through bridge rectifier, as 1.5V, 3V, 4.5V, 6V, 7.5V, 9V, 10.5V, 12V, these eight kinds of direct currents can satisfy various types of requirements of adopting battery powered electric equipment products of selling in the market basically, all can meet the demands such as electronic game machine, electronic organ, radio-cassette player, electric shaver etc.Experiments of Electricity power supply usefulness is used or done to these eight kinds of alternating voltage outputs as if the alternating current that then can directly obtain eight kinds of low-voltages without bridge rectifier for different electrical equipment.

For this reason, a double-point double-throw switch K3 is installed between the output of bridge rectifier and input,, when K3 pulls to the left output with bridge rectifier and is connected, can obtains direct current output with the double-pole of K3 output as whole power supply; When K3 pulls to the right when connecting with the input of rectification circuit, can obtain eight kinds of low-voltage alternating-currents outputs.

In order to obtain more function, between the output of bridge rectifier, install a function switch K2 additional, lighting bulb L is installed on the right branch of switch, for illumination usefulness, the position of regulating K1 can change the brightness of L, is particularly suitable for using night; The middle branch of switch can provide pulsating direct current output, cooperates the charging annex, can charge to battery; The left branch string of switch has filter capacitor C2 that 8 kinds of purer direct current outputs can be provided.

This power supply with charger and two annexes of shaver power connector as accompanying drawing 2,3,4, shown in.Annex is connected with the plug of the output of K3 by jack CK1 or CK2, function switch K2 is pulled to the centre--the pulsating direct current position, select the position of voltage-regulation K switch 1 again, just can be to battery charge, with the shaver power connector--profile is consistent with battery, just can realize the function that shaves by being connected in the shaver.

Because the igniter that the electric furnace heating wire R4 of K switch 4 controls forms is housed in the shaver power connector, when foregoing circuit is connected, press K switch 4, just available it light a cigarette or use it for anything else.

For improving the security reliability of power supply, adopt king's font skeleton among the transformer B, the primary and secondary winding lays respectively among the groove of king's character skeleton, to improve the dielectric strength of transformer, and, fully guarantee user's personal safety at relevant position subsides insulating tape.

The relative prior art of this power supply has following advantage:

1, circuit is simple and function is very complete, and it can provide respectively 8 kinds of direct currents, pulsating direct currents and exchange output, and the choice is big, and is very easy to use flexible, also has illumination, charges, shaves, the function such as igniting, and is available in all varieties.

2, safe and reliable, the one-object-many-purposes good economy performance.

Claims

1, a kind of ac-dc conversion power supply that is particularly suitable for family and similar site's use; It is made up of transformer, voltage-regulation switch, rectification circuit, one end of transformer secondary output is connected with an input of rectification circuit, the voltage-regulation switch is connected between another input of the voltage tap end of transformer and rectification circuit, it is characterized in that: between the output of rectification circuit and input, a double-point double-throw switch K3 is housed, at the output of rectification circuit

Between function switch K2 is housed, on a branch road of K switch 2, be serially connected with lighting bulb L.

2, power supply as claimed in claim 1 is characterized in that: adopt king's font skeleton among the transformer B, primary and secondary winding lays respectively among the groove of king's character skeleton; It also has charger and two annexes of shaver power connector, and the igniter of the electric furnace heating wire R4 composition of K switch 4 controls is housed in the shaver power connector.