Sound control printed circuit board

Abstract

The utility model belongs to the field of electronic science and education equipment for teenagers, and discloses a sound control printed circuit board, which comprises a circuit board main body, a microphone, an electrolytic capacitor, a first resistor, a second resistor, a third resistor, a first triode, a second triode and a pin header are arranged on the circuit board main body, and the pin header is used for being matched with a female header on an electronic element block in a plugging manner. Therefore, electrical and structural connection between the sound control printed circuit board and the electronic component block is realized. According to the utility model, each electronic component is integrated on the circuit board body, the circuit board body is provided with the pin header, and the circuit board body is connected with the female header on the electronic component block through the pin header, so that circuit splicing is realized, teenagers can carry out electronic manufacturing, and the sound control printed circuit board can be detached from the electronic component block, thereby being convenient to use. Therefore, the electronic component block has universality, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electronic scientific and educational equipment for teenagers, in particular to a voice-controlled printed circuit board. Background Art

[0002] The voice-controlled drive circuit is a common circuit. Its circuit structure contains commonly used electronic components such as microphones, resistors, transistors, electrolytic capacitors, etc. It is suitable for training young people in electronic production.

[0003] In youth electronic production competitions, electronic puzzles are used to complete various circuit experiments. Currently, electronic components are generally fixed directly on the electronic component blocks of the electronic puzzles, and the electronic components cannot be removed. If the above-mentioned infrared alarm circuit structure is directly fixed on the electronic component block, such an electronic component block can only be used for one circuit experiment, which will cause waste. Utility Model Content

[0004] The purpose of the utility model is to provide a sound-controlled printed circuit board to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A voice-controlled printed circuit board comprises a circuit board body, on which a microphone, an electrolytic capacitor, a first resistor, a second resistor, a third resistor, a first triode, a second triode, and a pin header are arranged. The pin header is used to be plugged with a female header on an electronic component block, thereby realizing electrical and structural connection between the voice-controlled printed circuit board and the electronic component block.

[0007] Further, one ends of the first resistor, the second resistor, and the third resistor are electrically connected to the pins respectively, the other end of the first resistor is electrically connected to the microphone, the other end of the microphone is electrically connected to the pins, one end of the electrolytic capacitor is electrically connected between the first resistor and the microphone, and the other end is electrically connected to the second resistor and the base of the first transistor respectively, the emitter of the first transistor is electrically connected to the pin, the collector of the first transistor is electrically connected to the third resistor, the base of the second transistor is electrically connected between the collector of the first transistor and the third resistor, and the emitter and collector of the second transistor are electrically connected to the pins respectively.

[0008] Furthermore, the resistance of the first resistor is 2 kΩ.

[0009] Furthermore, the resistance of the second resistor is 1 MΩ.

[0010] Furthermore, the resistance of the third resistor is 100 kΩ.

[0011] Furthermore, the model of the first transistor is S9014.

[0012] Furthermore, the model of the second transistor is S8050.

[0013] Furthermore, the capacitance of the electrolytic capacitor is 100 µF.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model integrates various electronic components on the circuit board body, and a pin header is arranged on the circuit board body, which is connected to the female header on the electronic component block through the pin header, thereby realizing circuit splicing, which can be used by teenagers for electronic production, and the voice-controlled printed circuit board can be disassembled from the electronic component block, so that the electronic component block has universal applicability and avoids waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the structure of the voice-controlled printed circuit board of the utility model.

[0016] Figure 2 The utility model is a schematic diagram of the connection structure between the voice-controlled printed circuit board and the electronic component block.

[0017] Figure 3 This is a schematic diagram of the electronic component block structure.

[0018] Figure 4 This is the schematic diagram of the voice-controlled drive circuit.

[0019] In the figure: S1 represents the voice-controlled printed circuit board; 100 represents the circuit board body; 101 represents the pin header; S2 represents the electronic component block; 200 represents the female header; 201 represents the male buckle; R1 represents the first resistor; R2 represents the second resistor; R3 represents the third resistor; R4 represents the fourth resistor; C1 represents the electrolytic capacitor; MIC1 represents the microphone; VT1 represents the first transistor; VT2 represents the second transistor; J1 represents the common base composed of the pin header and the female header, and 1-5 in J1 represents pin 1, pin 2, pin 3, pin 4, and pin 5; LED1 represents the light-emitting diode; BT1 represents the first battery; BT2 represents the second battery; SW1 represents the switch. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4A voice-controlled printed circuit board includes a circuit board body 100. A microphone MIC1, an electrolytic capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a first transistor VT1, a second transistor VT2, and a pin header 101 are arranged on the circuit board body 100. The pin header 101 is used to be plugged with a female header 200 on an electronic component block S2, so as to realize the electrical and structural connection between the voice-controlled printed circuit board S1 and the electronic component block S2. The pin header 101 has a first pin 1, a second pin 2, a third pin 3, a fourth pin 4, and a fifth pin 5, and the pins are on the back of the circuit board body 100.

[0022] Continue reading Figure 4 One end of the first resistor R1, the second resistor R2, and the third resistor R3 are electrically connected to the fourth pin 4 of the pin header 101, respectively. The other end of the first resistor R1 is electrically connected to the microphone MIC1, and the other end of the microphone MIC1 is electrically connected to the second pin 2 of the pin header 101. One end of the electrolytic capacitor C1 is electrically connected between the first resistor R1 and the microphone MIC1, and the other end is electrically connected to the second resistor R2 and the base of the first transistor VT1, respectively. The emitter of the first transistor VT1 is electrically connected to the second pin 2 of the pin header 101, the collector of the first transistor VT1 is electrically connected to the third resistor R3, the base of the second transistor VT2 is electrically connected between the collector of the first transistor VT1 and the third resistor R3, and the emitter and collector of the second transistor VT2 are electrically connected to the second pin 2 and the third pin 3 of the pin header 101, respectively. The first transistor VT1 and the second transistor VT2 are both NPN transistors.

[0023] The first resistor R1, the second resistor R2 and the third resistor R3 are all carbon film resistors. The resistance of the first resistor R1 is 2kΩ, the resistance of the second resistor R2 is 1MΩ, the resistance of the third resistor R3 is 100kΩ, the model of the first transistor VT1 is S9014, the model of the second transistor VT2 is S8050, and the capacitance of the electrolytic capacitor C1 is 100µF.

[0024] It should be noted that the electrical connection of the electronic components in the voice-controlled printed circuit board S1 is achieved through the printed circuit.

[0025] The utility model is used in conjunction with the electronic component block S2 in the electronic puzzle, which is improved based on the electronic component block in patent CN206148021U, retaining structures such as male and female buckles and printed circuits, and replacing the electronic components with female headers 200. Specifically, the electronic component block S2 is provided with a female header 200, which has five jacks, and the female header 200 matches the pin header 101, and the two are plugged together, a male buckle 201 is provided on one side of the electronic component block S2, and a female buckle is provided on the other side, and the female header 200 is electrically connected to the male and female buckles through the printed circuit.

[0026] The electronic component blocks are also connected to other puzzle pieces through male and female buckles to form Figure 4 The infrared radiation alarm circuit shown in the figure is Figure 4 The peripheral circuit is located on the right side of the common base J1.

[0027] Functional principle: The voice-controlled driving circuit is a circuit controlled by sound. When the microphone MIC1 receives the sound wave oscillation signal, it is converted into an electrical signal by the electrolytic capacitor C1, and then amplified by the first transistor VT1 and then by the second transistor VT2 to light up the light-emitting diode LED1.

[0028] Experimental demonstration: Close the switch SW1, and the light-emitting diode LED1 will light up when you make a sound or blow air close to the microphone MIC1.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A voice-controlled printed circuit board, characterized in that: It includes a circuit board body, on which a microphone, an electrolytic capacitor, a first resistor, a second resistor, a third resistor, a first transistor, a second transistor, and a pin header are arranged. The pin header is used to be plugged with a female header on an electronic component block, thereby realizing the electrical and structural connection between the voice-controlled printed circuit board and the electronic component block.

2. The voice-activated printed circuit board according to claim 1, characterized in that: One ends of the first resistor, the second resistor and the third resistor are electrically connected to the pins respectively, the other end of the first resistor is electrically connected to the microphone, the other end of the microphone is electrically connected to the pins, one end of the electrolytic capacitor is electrically connected between the first resistor and the microphone, and the other end is electrically connected to the second resistor and the base of the first transistor respectively, the emitter of the first transistor is electrically connected to the pin, the collector of the first transistor is electrically connected to the third resistor, the base of the second transistor is electrically connected between the collector of the first transistor and the third resistor, and the emitter and collector of the second transistor are electrically connected to the pins respectively.

3. The voice-activated printed circuit board according to claim 1, characterized in that: The resistance of the first resistor is 2 kΩ.

4. The voice-activated printed circuit board according to claim 1, characterized in that: The resistance of the second resistor is 1 MΩ.

5. The voice-activated printed circuit board according to claim 1, characterized in that: The resistance of the third resistor is 100 kΩ.

6. The voice-activated printed circuit board according to claim 1, characterized in that: The model of the first transistor is S9014.

7. The voice-activated printed circuit board according to claim 1, characterized in that: The model of the second transistor is S8050.

8. The voice-activated printed circuit board according to claim 1, characterized in that: The capacitance of the electrolytic capacitor is 100µF.

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