CN2221809Y - Double happiness word board for wedding - Google Patents

Abstract

The utility model relates to a double happiness word board for wedding which belongs to the patterns of imitating three-dimensional effect and comprises an outer casing for three-dimensional double happiness words, and an automatic control circuit composed of an acoustic frequency input circuit, integration power amplifier circuit, a negative feedback self-excitationprevention network and a loudspeaker is arranged in the outer casing; the utility model has the advantages of strong three-dimension effect, big sound, heavy happiness atmosphere, no public harm, low cost and easy implementation, and simultaneously, the utility model is accord with the relevant prescript of China and is ideal articles for the wedding.

Description

The double happiness word board that wedding is used

The utility model relates to the double happiness word board that a kind of wedding is used, and belongs to the pattern of copying stereoeffect, is particularly suitable for the wedding celebration and ceremonially uses, and also can be used as the ornament in newly-married room.

The have a wedding traditional approach of celebration of China people was to paste red double happiness word with the both sides of bridal chamber door in front of the door greatly in the past, to increase celebrating atmosphere, and when connecing the arriving of bride's car, also the air was filled with sound of burning firecrackers, the ticker tape bits are existed everywhere, atmosphere is very ardent, yet along with the development that deepens continuously of reform and opening-up, set off fireworks for preventing in some big and medium-sized cities in recent years, the public hazards of firecracker are put into effect successively in the city and are forbidden setting off fireworks, the regulation of firecracker, the behave that this is benefited the nation and the people, be subjected to the common people's welcome deeply, but changed the wedding celebration mode that follows for many years, the somebody employs band increases celebrating atmosphere, but because the expense height, general family is forbidding.Therefore, people thirst for occurring as early as possible a kind ofly can enlivening wedding atmosphere, nuisanceless, healthy again celebration articles for use.

The purpose of this utility model is to provide a kind of celebrating happy atmosphere that can enliven wedding, the double happiness word board that the wedding of comply with relevant regulations again, cost is low is used.

The purpose of this utility model realizes by the following technical solutions, the shell that a three-dimensional double happiness word is arranged, be provided with the automatic control circuit that is made of audio frequency input, integrated amplifier, the anti-self-excitation network of negative feedback and loudspeaker in it, 1,2 pin of speech IC YG907 are connected to R after linking to each other in the described audio frequency input circuit ₃With D ₁Between, accept R ₃, D ₁, D ₂The 3V burning voltage that provides, 4 pin power supply negative terminal ground connection, 3 pin output terminal and capacitor C ₆, potentiometer W ₀An end link to each other, to the power amplifier input audio signal; Input end 1 pin and the C of TDA2003 in the described integrated amplifier circuit ₄, R ₅That forms links to each other every straight buffer circuit, and 2 pin pass through C ₅Be plugged in R ₁With R ₂Between, 3 pin ground connection, 4 pin are through R ₁, R ₄An end after with C ₂Link to each other, to loudspeaker YD ₁, YD ₂Output signal, 5 pin are through C ₃, R ₃An end link to each other with power positive end.

The utility model compared with prior art, owing to adopt the three-dimensional double happiness word plastic casing of various bright-colored injection mo(u)ldings, in join have language, the technical measures of the control circuit of music function, and through evidence have that stereoscopic sensation is strong, sound is loud and clear, celebrating atmosphere is strong, again nuisanceless and comply with relevant regulations, low cost and other advantages, implement simultaneously easily, be beneficial to and apply, obvious social benefit.

Fig. 1 is circuit theory diagrams of the present utility model.

Fig. 2 is a circuit block diagram of the present utility model.

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, the three-dimensional double happiness word shell of an injection mo(u)lding, being provided with the YG907 speech IC of being produced by Keyong Electronic Co., Ltd. Ningbo in it is the automatic control circuit that the main anti-self-excitation lattice network of audio frequency input circuit, integrated amplifier circuit and negative feedback constitutes, in its described audio frequency input circuit 1 pin of YG907 be plugged in R after trigger end 2 pin link to each other ₃, D ₁Between, accept R ₃, D ₁, D ₂The 3V burning voltage that provides, 4 pin are power supply negative terminal ground connection, 3 pin output terminal and C ₆, current potential W ₀An end link to each other C ₆, W ₀Other end ground connection, provide sound signal to the integrated amplifier circuit; In the described integrated amplifier circuit input end 1 pin of TDA2003 with by C ₄, R ₅The block isolating circuit of forming links to each other, and 2 pin are connected to by C ₅, R ₂, R ₁The negative feedback network that constitutes, 3 pin ground connection, 4 pin are through R ₁, R ₄An end, pass through C ₂With loudspeaker YD in parallel ₁, YD ₂Link to each other, 5 pin are through C ₃, R ₃An end after connect power positive end, C ₁, R ₂And C ₃Other end ground connection.

The utility model also can hang in the wedding Room before both can having hung over the car that meets bride when using, when switch closes speech IC YG907 get electric, the work that promptly is triggered, output terminal 3 pin output voice signal is through C ₆, W ₀, pass through C ₄With R ₅Send into the input end of TDA2003, through negative feedback network C ₅, R ₁, R ₂Input signal is amplified the back by the output of 4 pin, by coupling capacitor C ₂Deliver to loudspeaker YD in parallel ₁, YD ₂, the weeding song that in loudspeaker sends YG907, stores, suona horn gong and drum (instrumental) ensemble sound and wish that newly-married blessing words, order happy, that live a long life together broadcast, and repeat automatically, cheerful and light-hearted celebrating atmosphere is strong, get final product with complete turning off.

Claims (1)

1. The double happiness word board that a kind of wedding is used, it is characterized in that having the shell of a three-dimensional double happiness word, be provided with the automatic control circuit that is made of audio frequency input, integrated amplifier, the anti-self-excitation network of negative feedback and loudspeaker in it, 1,2 pin of speech IC YG907 are plugged in R after linking to each other in the described audio frequency input circuit ₃With D ₁Between, accept R ₃, D ₁, D ₂The 3V burning voltage that provides, 4 pin power supply negative terminal ground connection, 3 pin output terminal and capacitor C ₆, potentiometer W ₀An end link to each other, to the power amplifier input audio signal; Input end 1 pin and the C of TDA2003 in the described integrated amplifier circuit ₄, R ₅That forms links to each other every straight buffer circuit, and 2 pin pass through C ₅Be plugged in R ₁With R ₂Between, 3 pin ground connection, 4 pin are through R ₁, R ₄An end after with C ₂Link to each other, to loudspeaker YD ₁, YD ₂Output signal, 5 pin are through C ₃, R ₃An end link to each other with power positive end.

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