CN201352374Y - Electronic inductive doorbell - Google Patents
Electronic inductive doorbell Download PDFInfo
- Publication number
- CN201352374Y CN201352374Y CNU2009200230629U CN200920023062U CN201352374Y CN 201352374 Y CN201352374 Y CN 201352374Y CN U2009200230629 U CNU2009200230629 U CN U2009200230629U CN 200920023062 U CN200920023062 U CN 200920023062U CN 201352374 Y CN201352374 Y CN 201352374Y
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- pin
- integrated circuit
- effect transistor
- field effect
- doorbell
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Abstract
Disclosed is an electronic inductive doorbell which comprises an inductive electronic switch and a music generator circuit. The inductive electronic switch is formed in the following way: an inductive plate M is connected with the G pole of a field effect transistor T1; the D pole of the field effect transistor T1 is connected with the 1 pin of an integrated circuit IC; and the S pole of the field effect transistor T1 is connected with the 2 pin of the integrated circuit IC and one end of a resistor R1. The music generator circuit is formed in the following way: the 3 pin of the integrated circuit IC is connected with the basal pole of an audion T2; the collector pole of the audion T2 is connected with the other end of a loudspeaker L; the 5 pin of the integrated circuit IC is connected with the emitter of the audion T2, one end of the resistor R1 and the cathode end of a battery DC; the anode of the battery DC is connected with one end of a switch K; and the resistor R1 is connected between the 7 pin and the 8 pin of the integrated circuit. Compared with the prior art, the electronic inductive doorbell has the advantages that the structure is simple, and a visitor only needs to put a hand close to the door, then the doorbell will give off sound to remind the host the arrival of the visitor, thus being quite convenient to use.
Description
Technical field
The utility model relates to the electronic door bell technical field, is specifically related to a kind of electronic induction doorbell.
Background technology
Present electronic door bell all adopts the button mode, after the guest must find bell button and presses, just can send prompting sound in the door, and present bell button is for pursuing the attractive in appearance of the shop front, common design small and exquisite, and the guest searches difficulty, uses very inconvenience.
The utility model content
The purpose of this utility model is at having defective or deficiency in the above-mentioned prior art, a kind of electronic induction doorbell being provided.
Its technical scheme is: comprise induction type electronic switch and music generator circuit.Described induction type electronic switch is by the G utmost point of sensing chip M connection field effect transistor T1, and the D utmost point of field effect transistor T1 connects 1 pin of integrated circuit (IC), and the S utmost point of field effect transistor T1 connects 2 pin of integrated circuit (IC) and an end of resistance R 1 is formed; Described music generator circuit is connected the base stage of triode T2 by 3 pin of integrated circuit (IC), the collector of triode T2 connects the other end of loudspeaker L, 5 pin of integrated circuit (IC) connect emitter, an end of resistance R 1 and the negative pole end of battery DC of triode T2, the positive terminal of battery DC connects an end of K switch, is connected with resistance R 1 between 7 pin of integrated circuit (IC) and 8 pin and forms.
Described integrated circuit (IC) is KD9300 or CW9300 type music integrated circuit.
The utility model has simple in structure compared with prior art, as long as the guest stretches out one's hand near on door, doorbell can send the sound, and prompting owner guest's arrival is very easy to use.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.
Embodiment:
A kind of electronic induction doorbell comprises induction type electronic switch and music generator circuit.The induction type electronic switch is by the G utmost point of sensing chip M connection field effect transistor T1, and the D utmost point of field effect transistor T1 connects 1 pin of integrated circuit (IC), and the S utmost point of field effect transistor T1 connects 2 pin of integrated circuit (IC) and an end of resistance R 1 is formed; Described music generator circuit is connected the base stage of triode T2 by 3 pin of integrated circuit (IC), the collector of triode (T2) connects the other end of loudspeaker L, 5 pin of integrated circuit (IC) connect emitter, an end of resistance R 1 and the negative pole end of battery DC of triode T2, the positive terminal of battery DC connects an end of K switch, is connected with resistance R 1 between 7 pin of integrated circuit (IC) and 8 pin and forms.
Integrated circuit (IC) is KD9300 or CW9300 type music integrated circuit.
During use, at first sensing chip M is installed on the door, connect K switch, circuit enters waiting status, when the people stretches out one's hand near sensing chip M, the signal triggering field effect transistor T1 work of human body sensing, its D-S resistance reduces rapidly, the work of triggering integrated circuit (IC), the signal of integrated circuit (IC) promote loudspeaker L and sound after triode T2 amplifies.
Claims (2)
1, a kind of electronic induction doorbell, comprise induction type electronic switch and music generator circuit, it is characterized in that: described induction type electronic switch is connected the G utmost point of field effect transistor (T1) by sensing chip (M), the D utmost point of field effect transistor (T1) connects 1 pin of integrated circuit (IC), and the S utmost point of field effect transistor (T1) connects 2 pin of integrated circuit (IC) and an end of resistance (R1) is formed; Described music generator circuit is connected the base stage of triode (T2) by 3 pin of integrated circuit (IC), the collector of triode (T2) connects the other end of loudspeaker (L), 5 pin of integrated circuit (IC) connect emitter, an end of resistance (R1) and the negative pole end of battery (DC) of triode (T2), the positive terminal of battery (DC) connects an end of switch (K), is connected with resistance (R1) between 7 pin of integrated circuit (IC) and 8 pin and forms.
2, electronic induction doorbell according to claim 1 is characterized in that: described integrated circuit (IC) is KD9300 or CW9300 type music integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200230629U CN201352374Y (en) | 2009-03-05 | 2009-03-05 | Electronic inductive doorbell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200230629U CN201352374Y (en) | 2009-03-05 | 2009-03-05 | Electronic inductive doorbell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201352374Y true CN201352374Y (en) | 2009-11-25 |
Family
ID=41375761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200230629U Expired - Fee Related CN201352374Y (en) | 2009-03-05 | 2009-03-05 | Electronic inductive doorbell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201352374Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034325A (en) * | 2010-12-17 | 2011-04-27 | 黄勇 | Infrared induction type electronic Dingdong doorbell |
| CN102063770A (en) * | 2010-12-17 | 2011-05-18 | 黄宇嵩 | Induction type electronic doorbell |
| CN104036602A (en) * | 2014-06-20 | 2014-09-10 | 米勇龙 | Touch electronic doorbell |
-
2009
- 2009-03-05 CN CNU2009200230629U patent/CN201352374Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034325A (en) * | 2010-12-17 | 2011-04-27 | 黄勇 | Infrared induction type electronic Dingdong doorbell |
| CN102063770A (en) * | 2010-12-17 | 2011-05-18 | 黄宇嵩 | Induction type electronic doorbell |
| CN104036602A (en) * | 2014-06-20 | 2014-09-10 | 米勇龙 | Touch electronic doorbell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20100305 |