CN203368729U

CN203368729U - Multipurpose controllable sounder module

Info

Publication number: CN203368729U
Application number: CN 201320451715
Authority: CN
Inventors: 吴建堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2013-12-25
Anticipated expiration: 2023-07-26

Abstract

The utility model provides a multipurpose controllable sounder module. The multipurpose controllable sounder module is characterized by comprising 3-6 V DC power supply, a positive feedback oscillating circuit, a loudspeaker BL and a control unit. The positive feedback oscillating circuit is composed of an NPN-type transistor VT1, a PNP-type transistor VT2, a resistor R1, a positive feedback capacitor C1 and the loudspeaker BL, and the control unit is composed of an a terminal, a b terminal and a control element. Some circuits or devices need a buzzer, but a certain resistors exist during the circuit connection process, so that the problems exist, for example, the weldable buzzer can not work reliably. In order to solve the problem, according to the utility model, discrete components are used to manufacture the multipurpose controllable sounder module. According to the utility model, the electricity consumption is very tiny when a circuit is in a waiting state, the tone of the sounder module can be adjusted by increasing and reducing the positive feedback capacitance, and the volume of the sounder can be increased by improving a DC power supply voltage, and the control unit can be connected with the control elements flexibly, such as microswitch, reed switch, magnetically controlled switch, photoresistor, etc.

Description

The controlled information ring module of multipurpose

Technical field

The utility model belongs to sound equipment and electron controls technology field, is about the controlled information ring module of a kind of multipurpose.

Background technology

Solderable buzzer commonly used has the advantages such as volume is little, easy to use, purposes is wide, it connects DC power supply and can sound a buzzer, it is directly by DC power control, and require the lead-in wire in DC power supply circuit to connect necessary reliable, that is: can not there be resistance in all connecting lead wires, otherwise the solderable buzzer is with regard to cisco unity malfunction.Some circuit or equipment need to use buzzer, but have certain resistance in the circuit connection procedure, select the solderable buzzer with regard to exist can not reliably working etc. problem.In order to solve this practical problem, the utility model is used discrete component to make the controlled information ring module of a kind of multipurpose.

The utility model electric circuit characteristic: circuit is when stand-by state, and 2 heteropolar crystal pipes are in cut-off state, the circuit minimal power consumption; In the increase and decrease circuit, the capacity of positive feedback electric capacity can be regulated the tone of information ring module, and the DC power supply voltage that improves the information ring module can increase the information ring volume; Control unit can be refuted control elements such as connecing sensitive switch, tongue tube, magnetic switch, photo resistance or thin wire as required flexibly, and the utility model also can be used for the control fields such as article anti-theft.

The circuit of the controlled information ring module of multipurpose is all used common discrete component to make, and cost of manufacture only needs several units, is well suited for developing in batches for factory.

Below describe the controlled information ring module of multipurpose described in the utility model related relevant technologies content in implementation process in detail.

The utility model content

Goal of the invention and beneficial effect: some circuit or equipment need to use buzzer, but have certain resistance in the circuit connection procedure, select the solderable buzzer with regard to exist can not reliably working etc. problem.In order to solve this practical problem, the utility model is used discrete component to make the controlled information ring module of a kind of multipurpose.

The circuit working principle: the circuit essence of the controlled information ring module of multipurpose is a positive feedback oscillator.After the information ring module is connected 3～6V DC power supply, and when in circuit, a terminal is communicated with (resistance≤1K Ω) with the b terminal, 2 heteropolarity transistors are all in cut-off state, and circuit is not worked, the circuit minimal power consumption; When a terminal in circuit is communicated with the disconnection of b terminal, 2 heteropolarity transistors obtain forward bias voltage, and circuit is started working, and loud speaker BL sends sinusoidal audio sound.

Technical scheme: the controlled information ring module of multipurpose, it comprises 3～6V DC power supply, positive feedback oscillating circuit and loud speaker BL, control unit, it is characterized in that:

The positive feedback oscillating circuit: it is by NPN transistor VT1, PNP transistor VT2, resistance R 1, positive feedback capacitor C 1 and loud speaker BL form, the collector electrode of NPN transistor VT1 connects the base stage of PNP transistor VT2, an end and the control unit of the base stage connecting resistance R1 of NPN transistor VT1, the anodal VCC of the other end connection circuit of resistance R 1, the emitter connection circuit ground GND of NPN transistor VT1, the anodal VCC of the emitter connection circuit of PNP transistor VT2, the collector electrode of PNP transistor VT2 is by loud speaker BL connection circuit ground GND, the collector electrode of one termination PNP transistor VT2 of positive feedback capacitor C 1, the base stage of another termination NPN transistor VT1 of positive feedback capacitor C 1,

Control unit: it is comprised of a terminal, b terminal and control element, and a terminal connects the base stage of NPN transistor VT1, b terminal connection circuit ground GND, and a terminal connects an end of control element, and the b terminal connects the other end of control element;

3～6V DC power anode is connected with circuit anode VCC, and 3～6V DC power cathode is connected with circuit ground GND.

The accompanying drawing explanation

Accompanying drawing 1 is embodiment circuit working schematic diagram of the controlled information ring module of multipurpose that the utility model provides; Control element in accompanying drawing 1 refers to sensitive switch, tongue tube, magnetic switch, photo resistance or thin wire etc.

Embodiment

According to multipurpose controlled information ring modular circuit fundamental diagram and the accompanying drawing explanation shown in accompanying drawing 1, and according to annexation between components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in execution mode requires and the circuit production main points are implemented to realize the utility model, below in conjunction with embodiment, correlation technique of the present utility model is further described.

The selection of components and parts and technical parameter thereof

Element number	The components and parts title	Model or technical indicator	Quantity	Remarks
					VT1	NPN transistor	2SC9013、β≥150	1	?
VT2	PNP transistor	2SC9015、β≥150	1	?
					R1	Metalfilmresistor	1/4W、27KΩ	1	?
C1	Electric capacity	0.047μF/40V	1	Positive feedback
					BL	Dynamic speaker	0.25W、8Ω	1	?
DC	DC power supply	3～6V D.C. regulated power supply	?	Or 3～6V rectifier power source
					a、b	The control element interface	According to control, need to select	?	?

Circuit production main points, circuit debugging and using method

Because of the circuit structure of the controlled information ring module of multipurpose fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing 1 is welded to specifications, physical connection line and welding quality are after careful inspection is correct, and circuit of the present utility model does not substantially need to carry out any debugging and can work;

The minimal power consumption of circuit when stand-by state, the capacity of increase and decrease circuit positive feedback capacitor C 1 can be regulated the tone of information ring module, and the DC power supply voltage that improves the information ring module can increase the information ring volume;

Control unit can be refuted control elements such as connecing sensitive switch, tongue tube, magnetic switch, photo resistance or thin wire as required flexibly on a terminal, b terminal.

Claims

1. the controlled information ring module of multipurpose, it comprises 3～6V DC power supply, positive feedback oscillating circuit and loud speaker BL, control unit, it is characterized in that:

Described positive feedback oscillating circuit is by NPN transistor VT1, PNP transistor VT2, resistance R 1, positive feedback capacitor C 1 and loud speaker BL form, the collector electrode of NPN transistor VT1 connects the base stage of PNP transistor VT2, an end and the control unit of the base stage connecting resistance R1 of NPN transistor VT1, the anodal VCC of the other end connection circuit of resistance R 1, the emitter connection circuit ground GND of NPN transistor VT1, the anodal VCC of the emitter connection circuit of PNP transistor VT2, the collector electrode of PNP transistor VT2 is by loud speaker BL connection circuit ground GND, the collector electrode of one termination PNP transistor VT2 of positive feedback capacitor C 1, the base stage of another termination NPN transistor VT1 of positive feedback capacitor C 1,

Described control unit is comprised of a terminal, b terminal and control element, and a terminal connects the base stage of NPN transistor VT1, b terminal connection circuit ground GND, and a terminal connects an end of control element, and the b terminal connects the other end of control element;

Described 3～6V DC power anode is connected with circuit anode VCC, and 3～6V DC power cathode is connected with circuit ground GND.