Hand microphone with adjustable power

Abstract

The utility model discloses a power-adjustable hand microphone, and belongs to the technical field of electronic communication. The objective of the utility model is to solve the technical problem of how to realize adjustable power and convenient use of the hand microphone. The key points of the technical scheme are that the microphone comprises a housing, an indicating lamp, an adjusting knob, a potentiometer, an amplifier, a filter, a power supply module, a hand microphone switch and a circuit board module, one side of the housing is provided with a microphone component, the indicating lamp is installed on the front side of the housing, the adjusting knob rolling horizontally is assembled on the back of the housing, and a hook is arranged below the adjusting knob. A power supply module is assembled below the hook; the lower end of the shell is connected with a cable connector; the circuit board module is fixedly assembled in the shell, the power supply module is used for providing electric energy, and the indicator lamp is used for indicating working signals; the potentiometer is used for adjusting power, the amplifier is used for amplifying received signals, the filter is used for reducing noise of the received signals, and the hand microphone switch is used for call control.

Description

Technical Field

[0001] This invention relates to the field of electronic communication technology, and in particular to an adjustable power hand microphone. Background Technology

[0002] A handheld microphone, also known as a handheld microphone, is a type of handheld microphone primarily used in communication devices such as walkie-talkies to facilitate voice communication. It connects to the walkie-talkie via an earphone cable, extending the walkie-talkie's microphone for convenient handheld operation.

[0003] Publication (Announcement) No.: CN209767771U, relating to the field of wireless communication, specifically an FM portable microphone, including a TX module and an RX module. The TX module includes a movable mounting cover with a single antenna at the upper left end. The RX module includes a receiving mounting cover with a pull-rod antenna at the upper right end. Both the movable and receiving mounting covers have a BK motherboard embedded inside. A microphone core cable extends from the upper right end of the movable mounting cover and is connected via a pairing code, allowing the user to hold the TX module for wireless audio signal transmission within a certain distance.

[0004] As can be seen from the above technologies, the power of existing hand microphones cannot be adjusted, which is inconvenient for users. Utility Model Content

[0005] To address the aforementioned technical problems and shortcomings—specifically, how to improve the power adjustment of a hand microphone for ease of use—this invention provides a hand microphone with adjustable power.

[0006] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0007] An adjustable power hand microphone includes a housing, an indicator light, an adjustment knob, a potentiometer, an amplifier, a filter, a power module, a hand microphone switch, and a circuit board module. A microphone head component is provided on one side of the housing, the indicator light is installed on the front of the housing, a horizontally rotating adjustment knob is installed on the back of the housing, a hook is provided below the adjustment knob, the power module is installed below the hook, and a cable connector is connected to the lower end of the housing.

[0008] A circuit board module is fixedly assembled inside the housing. The power module is electrically connected to the circuit board module to provide power, and the indicator light is electrically connected to the circuit board module to indicate the working signal. The adjustment knob is assembled on the potentiometer, which is electrically connected to the circuit board module to adjust the power. The amplifier is electrically connected to the circuit board to amplify the received signal. The filter is electrically connected to the circuit board module to reduce noise in the received signal. The microphone switch is electrically connected to the circuit board module for call control.

[0009] Preferably, the connector part of the cable connector is model GX16.

[0010] Preferably, the hook includes a circular baffle portion and a neck, the neck being located between the baffle portion and the housing and forming an annular hanging groove.

[0011] Preferably, the signal transmission line of the connector is connected to the potentiometer adjustment terminal via a handheld switch. One end of the potentiometer resistor is grounded, and the other end of the potentiometer resistor is connected to one end of capacitor C11 and one end of capacitor C10. One end of capacitor C10 and the other end of capacitor C11 are grounded, and the other end of capacitor C10 is connected to an amplifier.

[0012] Preferably, the amplifier includes resistors R11, R10, R9, R8, R7, R6, and R5, capacitors C3, C4, C5, C6, C7, C8, and C9, PNP transistor Q2, and PNP transistor Q3.

[0013] The positive terminal of the microphone component is connected to one end of resistor R5 and one end of capacitor C3. The other end of resistor R5 is connected to one end of resistor R9 and one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C8, the collector of PNP transistor Q3, one end of capacitor C9, the other end of capacitor C10, and one end of capacitor C7. The other end of capacitor C7 is connected to one end of resistor R7. The other end of resistor R7 is connected to the emitter of PNP transistor Q2, one end of capacitor C6, and one end of resistor R6. The other end of resistor R6 is connected to one end of capacitor C4, ground, and the negative terminal of the microphone component.

[0014] The other end of capacitor C4 is connected to the other end of capacitor C3 and one end of capacitor C5. The other end of capacitor C5 is connected to the other end of capacitor C6, one end of resistor R8, and the base of PNP transistor Q2. The other end of resistor R8 is connected to the collector of PNP transistor Q2, the base of PNP transistor Q3, the other end of capacitor C8, and the other end of resistor R9.

[0015] The other end of resistor R11 is grounded.

[0016] Preferably, the connection point of resistors R5 and R10 is also connected to a signal filter and a power module. The power module includes a PNP transistor Q1, resistors R1 and R2, and a diode D1. The battery terminal of the power module is connected to one end of resistor R1 and the emitter of PNP transistor Q1. The collector of PNP transistor Q1 is connected to the filter. The other end of resistor R1 is connected to one end of resistor R2 and the base of PNP transistor Q1. The other end of resistor R2 is connected to the cathode of diode D1 and the fourth pin of the handheld switch. The anode of diode D1 is used to connect to the third pin of the cable connector.

[0017] In summary, the present invention provides at least one of the following beneficial technical effects:

[0018] 1. The casing is small and portable, and can protect the internal electronic components. The potentiometer can be adjusted by adjusting the knob, which, together with the circuit board module, can achieve adjustable power. The power module can be disassembled for easy battery replacement. External connections can also be made using the cable connector, and the hook can be used for easy carrying.

[0019] 2. The GX16 model used has good waterproof and dustproof performance, ensuring that the connection remains stable and smooth even in harsh outdoor or high humidity conditions. The high reliability and quick installation of the GX16 connector greatly improves production efficiency and reduces maintenance costs.

[0020] 3. The amplifier can reliably amplify the signal and avoid signal interference. Attached Figure Description

[0021] Figure 1 This is a front view of the shell structure according to an embodiment of the present invention;

[0022] Figure 2 This is a rear view of the shell structure according to an embodiment of the present invention;

[0023] Figure 3 This is a side view of the shell structure according to an embodiment of the present invention;

[0024] Figure 4 This is the main circuit diagram on the circuit board module;

[0025] Figure 5 This is another part of the circuit diagram on the circuit board module.

[0026] Explanation of reference numerals for major components:

[0027] 100. Housing; 200. Indicator light; 300. Adjustment knob; 400. Potentiometer; 500. Amplifier; 600. Filter; 700. Power module; 800. Hand microphone switch; 900. Cable connector; 110. Microphone assembly; 120. Hook; 121. Baffle; 122. Neck; 123. Hanging slot. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this invention. Those skilled in the art can easily understand other advantages and effects of this invention from the content disclosed in this specification. This invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0030] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0031] Example:

[0032] This invention discloses an adjustable power hand microphone, as per embodiments. Figure 1 , Figure 2 and Figure 3 As shown, the device includes a housing 100, an indicator light 200, an adjustment knob 300, a potentiometer 400, an amplifier 500, a filter 600, a power module 700, a microphone switch 800, and a circuit board module. The potentiometer 400, amplifier 500, filter 600, microphone switch 800, and other electronic components are integrated onto the circuit board module. Figures 1 to 3 This is not reflected in the exterior design; you can refer to... Figure 4 and Figure 5 understand.

[0033] First, let me explain that a microphone component 110 (a microphone, also known as a transducer, is an energy conversion device that converts sound signals into electrical signals) is located on one side of the housing 100. An indicator light 200, which is an LED, is mounted on the front of the housing 100. A horizontally rotating adjustment knob 300 is mounted on the back of the housing 100. A hook 120 is located below the adjustment knob 300, and a power module 700 is mounted below the hook 120. A cable connector 900 is connected to the lower end of the housing 100. Preferably, the connector of the cable connector 900 is a GX16 type.

[0034] In this design, the hook 120 includes a circular baffle portion 121 and a neck 122. The neck 122 is located between the baffle portion 121 and the housing 100, forming an annular hanging groove 123. This allows a rope to be secured to the hanging groove 123, or the hook 120 to the waist. Some jeans have waist loops, which can be wrapped around the hanging groove 123 for easy carrying.

[0035] Combination Figure 3 and Figure 4 understand:

[0036] A circuit board module is fixedly mounted inside the housing 100. The power module 700 is electrically connected to the circuit board module to provide power. The indicator light 200 is electrically connected to the circuit board module to indicate the working signal. The adjustment knob 300 is mounted on the potentiometer 400, which is electrically connected to the circuit board module to adjust the power. The amplifier 500 is electrically connected to the circuit board to amplify the received signal. The filter 600 is electrically connected to the circuit board module to reduce noise in the received signal. The microphone switch 800 is electrically connected to the circuit board module for call control.

[0037] Specifically, in the circuit board module, the signal transmission line at the connector is connected to the adjustment terminal of potentiometer 400 via a handheld switch 800. One end of the resistor of potentiometer 400 is grounded, and the other end of the resistor is connected to one end of capacitor C11 and one end of capacitor C10. One end of capacitor C10 and the other end of capacitor C11 are grounded. The other end of capacitor C10 is connected to amplifier 500. The handheld switch 800 is... Figure 4 In this context, it is represented as K1, or OPEN. The handheld microphone switch 800 has multiple pins. In this solution, this existing switching device can enable the 2-pin and PS-4 line connections of line GX16, or switch to the RV-2 line connector.

[0038] Amplifier 500 includes resistors R11, R10, R9, R8, R7, R6, and R5, capacitors C3, C4, C5, C6, C7, C8, and C9, and PNP transistors Q2 and Q3.

[0039] The positive terminal of the microphone component 110 is connected to one end of resistor R5 and one end of capacitor C3. The other end of resistor R5 is connected to one end of resistor R9 and one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C8, the collector of PNP transistor Q3, one end of capacitor C9, the other end of capacitor C10, and one end of capacitor C7. The other end of capacitor C7 is connected to one end of resistor R7. The other end of resistor R7 is connected to the emitter of PNP transistor Q2, one end of capacitor C6, and one end of resistor R6. The other end of resistor R6 is connected to one end of capacitor C4, ground, and the negative terminal of microphone component 110.

[0040] The other end of capacitor C4 is connected to the other end of capacitor C3 and one end of capacitor C5. The other end of capacitor C5 is connected to the other end of capacitor C6, one end of resistor R8 and the base of PNP transistor Q2. The other end of resistor R8 is connected to the collector of PNP transistor Q2, the base of PNP transistor Q3, the other end of capacitor C8 and the other end of resistor R9. The other end of resistor R11 is grounded.

[0041] The connection point of resistors R5 and R10 also connects to signal filter 600 and power module 700. Power module 700 includes PNP transistor Q1, resistors R1 and R2, and diode D1. The battery terminal of power module 700 is connected to one end of resistor R1 and the emitter of PNP transistor Q1. The collector of PNP transistor Q1 is connected to filter 600. The other end of resistor R1 is connected to one end of resistor R2 and the base of PNP transistor Q1. The other end of resistor R2 is connected to the cathode of diode D1 and the fourth pin of handheld switch 800. The anode of diode D1 is used to connect to the third pin of cable connector 900.

[0042] Regarding filter 600, it is implemented using resistors and capacitors, for example... Figure 5 In the circuit, there are resistor R4, capacitor C1, and capacitor C2. The two ends of resistor R4 are grounded through capacitor C1 and capacitor C4 respectively, thus achieving filtering.

[0043] Working principle explanation: The second pin of the handheld switch 800 is connected to the cable connector 900 for signal transmission through this line. When its fourth pin and second pin are connected, it is a signal output. When the fourth pin and second pin are disconnected, it is a signal input. Figure 5 As can be seen, unidirectional signal input is achieved through diode D1, thus controlling the operation of power module 700. Interface J1 in power module 700 represents the positive terminal of the battery. The battery provides 9V DC power, which, through transistor Q1, outputs 5V to power downstream electrical components, including powering indicator light 200. Indicator light 200, connected to interface J3, indicates LED power and provides feedback on operating status. Terminal S1 is the signal output port. Figure 4 The circuitry is provided in the document.

[0044] exist Figure 4 In this design, interfaces J4 and J5 are the connection terminals of microphone component 110. After the microphone component 110 collects sound, it converts it into an electrical signal. At this point, the electrical signal is weak and is an AC signal. It needs to be amplified by amplifier 500. In this solution, amplifier 500 is used to continuously amplify the AC signal and output it at terminal S1. Potentiometer 400 can effectively adjust the resistance value, thereby changing the power supply and thus changing the operating current of amplifier 500.

[0045] This circuit is characterized by its more integrated switching mechanism, making operation more convenient and simpler.

[0046] Since the adjustment knob 300 is installed horizontally, it conforms to human operating habits and is easy to rotate. The adjustment knob 300 drives the potentiometer 400 to move, thereby changing the input resistance value of the potentiometer 400, thus changing the amplification power, and thus achieving the purpose of regulating and controlling the amplification and transmission of the sound electrical signal.

[0047] By using a handheld microphone switch 800 and a diode D1, input / output switching control is implemented for signal transmission, simplifying the existing circuit design.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the scope of the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent changes made to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An adjustable power microphone, comprising a housing, an indicator light, an adjustment knob, a potentiometer, an amplifier, a filter, a power module, a microphone switch, and a circuit board module, characterized in that, A microphone component is provided on one side of the housing, an indicator light is installed on the front of the housing, a horizontally rotating adjustment knob is installed on the back of the housing, a hook is provided below the adjustment knob, a power module is installed below the hook, and a cable connector is connected to the lower end of the housing. A circuit board module is fixedly assembled inside the housing. The power module is electrically connected to the circuit board module to provide power, and the indicator light is electrically connected to the circuit board module to indicate the working signal. The adjustment knob is assembled on the potentiometer, which is electrically connected to the circuit board module to adjust the power. The amplifier is electrically connected to the circuit board to amplify the received signal. The filter is electrically connected to the circuit board module to reduce noise in the received signal. The microphone switch is electrically connected to the circuit board module for call control.

2. The adjustable power hand microphone according to claim 1, characterized in that, The connector part of the cable joint is model GX16.

3. The adjustable power hand microphone according to claim 1, characterized in that, The hook includes a circular baffle portion and a neck, with the neck positioned between the baffle portion and the housing to form an annular hanging groove.

4. The adjustable power hand microphone according to claim 2, characterized in that, The signal transmission line of the connector is connected to the potentiometer adjustment terminal via a hand switch. One end of the potentiometer resistor is grounded, and the other end of the potentiometer resistor is connected to one end of capacitor C11 and one end of capacitor C10. One end of capacitor C10 and the other end of capacitor C11 are grounded, and the other end of capacitor C10 is connected to an amplifier.

5. The adjustable power hand microphone according to claim 4, characterized in that, The amplifier includes resistors R11, R10, R9, R8, R7, R6, and R5; capacitors C3, C4, C5, C6, C7, C8, and C9; and PNP transistors Q2 and Q3. The positive terminal of the microphone component is connected to one end of resistor R5 and one end of capacitor C3. The other end of resistor R5 is connected to one end of resistor R9 and one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C8, the collector of PNP transistor Q3, one end of capacitor C9, the other end of capacitor C10, and one end of capacitor C7. The other end of capacitor C7 is connected to one end of resistor R7. The other end of resistor R7 is connected to the emitter of PNP transistor Q2, one end of capacitor C6, and one end of resistor R6. The other end of resistor R6 is connected to one end of capacitor C4, ground, and the negative terminal of the microphone component. The other end of capacitor C4 is connected to the other end of capacitor C3 and one end of capacitor C5. The other end of capacitor C5 is connected to the other end of capacitor C6, one end of resistor R8, and the base of PNP transistor Q2. The other end of resistor R8 is connected to the collector of PNP transistor Q2, the base of PNP transistor Q3, the other end of capacitor C8, and the other end of resistor R9. The other end of resistor R11 is grounded.

6. The adjustable power hand microphone according to claim 5, characterized in that, The connection point of resistors R5 and R10 is also connected to a signal filter and a power module. The power module includes a PNP transistor Q1, resistors R1 and R2, and a diode D1. The battery terminal of the power module is connected to one end of resistor R1 and the emitter of PNP transistor Q1. The collector of PNP transistor Q1 is connected to the filter. The other end of resistor R1 is connected to one end of resistor R2 and the base of PNP transistor Q1. The other end of resistor R2 is connected to the cathode of diode D1 and the fourth pin of the handheld switch. The anode of diode D1 is used to connect to the third pin of the cable connector.

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