CN208691613U - A kind of electronic birthday candles circuit - Google Patents

Abstract

The utility model relates to technical field of lamps, a kind of electronic birthday candles circuit is provided, including multiple light bulb H1-Hn, BH-SK-1 chip, CW9310 chip, TWH8751 chip, loudspeaker LS, Electret condenser microphone MIC, triode VT, resistance R1, adjustable resistance R2 and capacitor C1, the collector of another termination triode VT of loudspeaker LS, the triode VT base stage connects CW9310 chip third pin, the adjustable resistance other end is connected with the one end Electret condenser microphone MIC and the first pin of BH-SK-1 chip respectively, the both ends capacitor C1 are connected with BH-SK-1 chip second pin and third pin respectively, the 12nd pin of BH-SK-1 chip respectively with CW9310 chip second pin and TWH875 1 chip second pin is connected.The utility model solves the problems, such as existing birthday cake point candle, and there are security risks and hygiene and health.

Description

A kind of electronic birthday candles circuit

Technical field

The utility model relates to technical field of lamps, in particular to a kind of electronic birthday candles circuit.

Background technique

Present child likes having cake and candle together with the reunification with one's family and relatives of oneself when celebrating a birthday, and crosses one Happy birthday PARTY.But when blowing at a candle, some children can be burned, or be arrived by sootiness, just because of this A little dangerous presence, it is celebrating to destroy the birthday, while candle candle can also destroy cake to a certain extent, and the diet for influencing child is strong Health.

Utility model content

Therefore, for above-mentioned problem, the utility model proposes it is a kind of it is simple and reasonable, avoid security risk, cake Use the electronic birthday candles circuit of health.

To solve this technical problem, the utility model takes following scheme: a kind of electronic birthday candles circuit, including multiple Light bulb H1-Hn, BH-SK-1 chip, CW9310 chip, TWH8751 chip, loudspeaker LS, Electret condenser microphone MIC, triode VT, Resistance R1, adjustable resistance R2 and capacitor C1, each light bulb H1-Hn are connected in parallel, and each light bulb H1-Hn mono- terminates TWH8751 core The 4th pin of piece, each light bulb H1-Hn other end, the 14th pin of BH-SK-1 chip, the first pin of CW9310 chip, The first pin of TWH8751 chip and the 5th pin, the one end adjustable resistance R2 and the one end loudspeaker LS meet power supply VCC, described to raise The collector of another termination triode VT of sound device LS, the triode VT base stage connect CW9310 chip third pin, it is described can The resistance other end is adjusted to be connected respectively with the one end Electret condenser microphone MIC and the first pin of BH-SK-1 chip, the triode VT hair Emitter-base bandgap grading, the Electret condenser microphone MIC other end, the 13rd pin of BH-SK-1 chip, the 5th pin of CW9310 chip and TWH8751 core Piece third pin is grounded, and the both ends the resistance R1 are connected with the 7th pin of CW9310 chip and the 8th pin respectively, described The both ends capacitor C1 are connected with BH-SK-1 chip second pin and third pin respectively, the 12nd pin of BH-SK-1 chip It is connected respectively with CW9310 chip second pin and TWH8751 chip second pin.

By using preceding solution, the beneficial effects of the utility model are: raw by the electronics for designing a kind of acoustic control Day candle circuit, when connecting with the mains, can light whole candles, and once can all blow out automatically.It, can be certainly after candle is blown out The dynamic music for releasing one first " happy birthday to you ", the circuit of the utility model is when powering on, light bulb H1-Hn whole point It is bright, that is, indicate that n candle is all lighted, when blowing at a candle, the disturbance signal that Electret condenser microphone MIC is sensed is through BH-SK-1 chip The amplification of acoustic control integrated circuit, frequency-selecting, shaping, triggering and driving export high level from the 12nd pin of BH-SK-1 chip, high Level is input to the gated end second pin of new power switch integrated circuit TWH8751 chip all the way, becomes TWH8751 chip For cut-off, light bulb H1-Hn all extinguishes, i.e. expression candle is blown out；It is integrated that another way is input to " happy birthday to you " music The triggering end second pin of circuit CW9310 chip makes CW9310 chip operation control loudspeaker LS play out a head and " wishes that your give birth to It is day happy " music, use was not only convenient, healthy, but also rich in temperament and interest, effectively avoided the security risk using candle, and structure is simple Rationally, cake, can wide popularization and application using health.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model embodiment.

Specific embodiment

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

With reference to Fig. 1, the electronic birthday candles circuit of preferred the utility model, including multiple light bulb H1-Hn, BH-SK-1 Chip, CW9310 chip, TWH8751 chip, loudspeaker LS, Electret condenser microphone MIC, triode VT, resistance R1, adjustable resistance R2 It is connected in parallel with capacitor C1, each light bulb H1-Hn, each light bulb H1-Hn mono- terminates the 4th pin of TWH8751 chip, each lamp Steep the H1-Hn other end, the 14th pin of BH-SK-1 chip, the first pin of CW9310 chip, the first pin of TWH8751 chip with 5th pin, the one end adjustable resistance R2 and the one end loudspeaker LS meet power supply VCC, another termination triode VT of loudspeaker LS Collector, the triode VT base stage connects CW9310 chip third pin, the adjustable resistance other end respectively with electret Body one end microphone MIC is connected with the first pin of BH-SK-1 chip, and the triode VT emitter, Electret condenser microphone MIC are another End, the 13rd pin of BH-SK-1 chip, the 5th pin of CW9310 chip and TWH8751 chip third pin are grounded, the electricity Resistance the both ends R1 be connected respectively with the 7th pin of CW9310 chip and the 8th pin, the both ends the capacitor C1 respectively with BH-SK-1 Chip second pin is connected with third pin, and the 12nd pin of BH-SK-1 chip draws with CW9310 chip second respectively Foot is connected with TWH8751 chip second pin.

The utility model is by designing the electronic birthday candles circuit of acoustic control a kind of, when connecting with the mains, can light automatically complete Portion's candle, and once can all blow out.After candle is blown out, the music of one first " happy birthday to you " can be released automatically, this When powering on, light bulb H1-Hn is all lighted the circuit of utility model, that is, indicates that n candle is all lighted, when blowing at a candle, The disturbance signal that Electret condenser microphone MIC is sensed is through the amplification of BH-SK-1 chip acoustic control integrated circuit, frequency-selecting, shaping, triggering and drive It is dynamic, high level is exported from the 12nd pin of BH-SK-1 chip, high level is input to new power switch integrated circuit all the way The gated end second pin of TWH8751 chip, makes TWH8751 chip become ending, and light bulb H1-Hn all extinguishes, i.e. expression wax Candle is blown out；Another way is input to the triggering end second pin of " happy birthday to you " music integrated circuit CW9310 chip, makes CW9310 chip operation control loudspeaker LS plays out the music of one first " happy birthday to you ", and use was not only convenient, healthy, but also rich There is temperament and interest, effectively avoid the security risk using candle, simple and reasonable, cake, can wide popularization and application using health.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the protection scope of the utility model.

Claims (1)

1. a kind of electronic birthday candles circuit, including multiple light bulb H1-Hn, BH-SK-1 chips, CW9310 chip, TWH8751 core Piece, loudspeaker LS, Electret condenser microphone MIC, triode VT, resistance R1, adjustable resistance R2 and capacitor C1, it is characterised in that: each Light bulb H1-Hn is connected in parallel, each termination of light bulb H1-Hn mono- the 4th pin of TWH8751 chip, each light bulb H1-Hn other end, The 14th pin of BH-SK-1 chip, the first pin of CW9310 chip, the first pin of TWH8751 chip and the 5th pin, adjustable electric Resistance one end R2 and the one end loudspeaker LS meet power supply VCC, the collector of another termination triode VT of loudspeaker LS, and described three Pole pipe VT base stage connect CW9310 chip third pin, the adjustable resistance other end respectively with the one end Electret condenser microphone MIC and The first pin of BH-SK-1 chip is connected, the triode VT emitter, the Electret condenser microphone MIC other end, BH-SK-1 chip 13rd pin, the 5th pin of CW9310 chip and TWH8751 chip third pin are grounded, the both ends the resistance R1 respectively with The 7th pin of CW9310 chip and the 8th pin are connected, the both ends the capacitor C1 respectively with BH-SK-1 chip second pin and Third pin is connected, the 12nd pin of BH-SK-1 chip respectively with CW9310 chip second pin and TWH8751 chip Second pin is connected.