CN2249945Y - Electronic horn - Google Patents
Electronic horn Download PDFInfo
- Publication number
- CN2249945Y CN2249945Y CN 96230901 CN96230901U CN2249945Y CN 2249945 Y CN2249945 Y CN 2249945Y CN 96230901 CN96230901 CN 96230901 CN 96230901 U CN96230901 U CN 96230901U CN 2249945 Y CN2249945 Y CN 2249945Y
- Authority
- CN
- China
- Prior art keywords
- pin
- transistor
- crystal diode
- squarer
- pushbutton switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Relay Circuits (AREA)
Abstract
The utility model relates to an electric horn mainly solves the problem that electric horn contact ablated, and characterized by sets up a transistor switch between square wave generator and button switch, can avoid the trouble that electric horn contact ablated, is particularly suitable for car or motor vehicles to use.
Description
The utility model relates to a kind of electric horn, especially the electronic horn of automobile or automobile-use.
Existing electric horn mainly is made up of electromagnetic oscillation device and loudspeaker, is controlled by pushbutton switch; The electromagnetic oscillation device of electric horn is made of the squarer, the power amplifier that adopt integrated circuit and solenoid, the sound iron core that is located in the loudspeaker housing, and loudspeaker are made of housing, soundboard, echo plate; The most common failure of existing electric horn is a pitting of contact.
The purpose of this utility model is the problem that solves the electric horn pitting of contact, and a kind of electronic horn that can avoid pitting of contact is provided.
The utility model comprises electromagnetic oscillation device and the loudspeaker by pushbutton switch control, it is characterized in that being provided with between squarer and pushbutton switch a transistor switch, the emitter of this transistor connects power cathode, base stage and the collector biasing resistor of connecting respectively and connects positive source; Squarer integrated circuit (IC) 4 pin connect the collector of transistor; The base stage of one termination transistor of pushbutton switch, another termination power cathode.
Because the utility model is provided with the transistor switch, only be a milliampere grade little electric current through the electric current of pushbutton switch, the fault of contactless ablation has fundamentally been eliminated the problem of electric horn pitting of contact.
What accompanying drawing was represented is integrated electronic schematic circuit of the present utility model, R among the figure
1Resistance and D
2Stabilivolt is the voltage-stabilizing system of circuit; D
1Be diode, its effect is that the protection circuit element is not damaged when the external power supply wrong;
R among the figure
4, R
5Resistance, C
1Electric capacity and integrated circuit (IC) constitute the squarer that prior art adopts; R
6Resistance and triode T
2, T
3, capacitor C
3Constitute the power amplifier that prior art adopts;
The utility model is provided with transistor T between button switch K and squarer integrated circuit (IC)
1, R
2Be triode T
1Base biasing resistor, R
5Be triode T
1The biasing resistor of collector; R
2, R
3Connect positive source; When button switch K disconnects, triode T
1Be saturation conduction, T
1Collector and IC4 pin are low level, make the IC forced resetting, IC3 pin no-output; When button switch K is closed, T
1Base stage is a low level, T
1By, T
1Collector and IC4 pin are high level, and IC is in free-running operation, and the square wave of IC3 pin output certain frequency and amplitude enters solenoid L after power amplification.
D among the figure
3, D
4Be to be connected in integrated circuit (IC) and capacitor C
1Between crystal diode, D
3Positive termination IC7 pin, negative terminal meets C
1, D
4Positive termination C
1, negative terminal connects IC2 pin, 6 pin; D is set
3, D
4This circuit time of discharging and recharging can be regulated separately, be convenient to regulate the dutycycle of output waveform, to adapt to required frequency of loudspeaker and loudness scope.
Realize that best way of the present utility model is transistor T
1Adopt a kind of among 3DD15, TIP41C, D3055, BU406, the BU407, the biasing resistor of base stage adopts 2K Ω, T
1The biasing resistor of collector adopts 10K Ω, the D in the squarer
3, D
4Diode adopts 1N4148, R
4, R
5Resistance adopts resistance 15K-56K adjustable resistance.
Claims (2)
1. an electronic horn comprises electromagnetic oscillation device and the loudspeaker of being controlled by pushbutton switch, it is characterized in that between squarer and pushbutton switch, being provided with a transistor switch, the emitter of this transistor connects power cathode, base stage and the collector biasing resistor of connecting respectively and connects positive source, squarer integrated circuit (IC) 4 pin connect the collector of transistor, the base stage of a termination transistor of pushbutton switch, another termination power cathode.
2. a kind of electronic horn according to claim 1 is characterized in that in square-wave generator integrated circuit (IC) 7 pin and capacitor C
1Between connect a crystal diode D
3, in IC2 pin, 6 pin and capacitor C
1Between connect a crystal diode D
4, the IC7 pin meets a crystal diode D
3Anode, IC2 pin, 6 pin meet another crystal diode D
4Negative terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230901 CN2249945Y (en) | 1996-05-29 | 1996-05-29 | Electronic horn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230901 CN2249945Y (en) | 1996-05-29 | 1996-05-29 | Electronic horn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2249945Y true CN2249945Y (en) | 1997-03-19 |
Family
ID=33908223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96230901 Expired - Fee Related CN2249945Y (en) | 1996-05-29 | 1996-05-29 | Electronic horn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2249945Y (en) |
-
1996
- 1996-05-29 CN CN 96230901 patent/CN2249945Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2249945Y (en) | Electronic horn | |
| CN210377710U (en) | Voice broadcasting device | |
| CN218998039U (en) | Silicon controlled trigger circuit for charger | |
| CN2226332Y (en) | Contactless electronic vehicle hooter | |
| CN209659283U (en) | A kind of circuit for built-in antenna radio | |
| CN2215761Y (en) | Loudspeaker for vehicles | |
| JPS60116743U (en) | Automatic noise limiting circuit in car radio | |
| CN2317582Y (en) | Voltage regulator | |
| CN2679907Y (en) | Special charging switching power source in secondary cell chemical synthetizing system | |
| CN2335231Y (en) | Contactless electric loudspeaker device | |
| CN2239113Y (en) | Remote-control switch emitter | |
| CN2172901Y (en) | Integrated circuit electric horn | |
| JPS6142611U (en) | power supply | |
| JP2836424B2 (en) | How to charge a sealed lead-acid battery | |
| CN2364629Y (en) | Remote controller for high-low voltage distribution equipment | |
| CN2225719Y (en) | Electron horn for automobile | |
| CN2260411Y (en) | Contactor protection electronic relay | |
| CN2331037Y (en) | Vibratory alarm for anti-burglar door | |
| CN2511050Y (en) | Anti-theft and anti-rob automatic alarming system | |
| JP2593998Y2 (en) | Power supply for amplifier | |
| CN2244275Y (en) | Electronic recording voice pager | |
| CN2212871Y (en) | Contactless electric horn | |
| JPH0241962Y2 (en) | ||
| CN1038523A (en) | Cable core check mark device circuit improves | |
| CN2330043Y (en) | Electric horn for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |