Simple and portable small electronic technology experiment box

Abstract

The utility model relates to a simple and portable small electronic technology experiment box, which comprises a direct-current stabilized power supply circuit unit, a power supply display protection circuit unit, a clock signal source circuit unit, a digital logic input and output circuit unit, a bread board circuit building unit and a nixie tube display circuit unit. The electronic technology pocket experiment platform is small in size and extremely low in cost. The design optimization leaves the most basic functions, so that the size of the equipment is greatly reduced, the price of the equipment is reduced to less than 200 RMB, the price is economical, and most students can have the ability to purchase and carry about by themselves and can carry out basic electronic technology experiments anytime and anywhere. Therefore, convenience can be brought to the majority of learning groups and users, and meanwhile, wide market prospects and economic values are achieved.

Description

Technical Field

[0001] The utility model relates to a simple portable small electronic technology experiment box, which is mainly used in primary electronic circuit experiments and belongs to the field of electronic circuit experimental instruments. Background Art

[0002] In recent years, with the emergence of miniaturized electronic technology experimental equipment, some small portable electronic technologies have appeared on the market. Most of them are fully functional, highly integrated, small in size, and relatively expensive, ranging from RMB 1,000 to 3,000. Some of these pocket experimental platforms require their own laptops to install virtual instruments before they can be used, and some require the purchase of multimeters and mini oscilloscopes to conduct measurement experiments. Most college and technical school students or beginners are too expensive to buy them. Therefore, the most basic functions of the pocket experimental platform can be optimized and removed, and some functions can be cut off, thereby greatly reducing the size of the equipment and reducing the price of the equipment. A simple and portable small electronic technology experiment box can be designed, and the price can be reduced to less than RMB 200. There is no pressure for schools to buy it, and enthusiasts can buy it by themselves, and carry it with them to complete the most basic electronic circuit experiments anytime and anywhere. Large-scale promotion will inevitably promote the progress and improvement of electronic technology experimental teaching. Summary of the invention

[0003] The utility model provides a simple and portable small electronic technology experiment box, which greatly reduces the price of the portable electronic technology pocket experiment platform, is conducive to large-scale popularization and promotion, and will definitely promote the improvement of the user's electronic circuit practical ability.

[0004] The technical solution of the utility model is: a simple portable small electronic technology experiment box, including a DC regulated power supply circuit unit, a power display protection circuit unit, a clock signal source circuit unit, a digital logic input and output circuit unit, a breadboard circuit construction unit, and a digital tube display circuit unit, which is composed of 6 circuit units in total. The input end of the DC regulated power supply circuit unit is connected to the +5V power supply of an external power bank or a mobile phone charging adapter, and the output is respectively connected to the power display protection circuit unit, the clock signal source circuit unit, the digital logic input and output circuit unit, the breadboard circuit construction unit, and the digital tube display circuit unit to provide working power for them. The power display protection circuit unit is connected to control the DC regulated power supply circuit unit to achieve adjustable overload protection, ensure the reliable operation of each unit, and at the same time ensure that the electronic components will not be burned by the failure of the experimental circuit.

[0005] The DC regulated power supply circuit unit includes a DC TypeC input port, an adjustable +1.5V~+12V and +5V output power supply. The +5V power supply of a power bank or a mobile phone charging adapter can stably provide an adjustable output of +1.5V~+12V and +5V to power the experimental circuit, and provide working power for each circuit unit.

[0006] The power display protection circuit unit includes a digital display head and an adjustable current limiting sound and light alarm self-locking reset circuit. It can display the voltage of the adjustable +1.5V~+12V power supply and the current of all power supplies in real time. When the experimental circuit is not working, it displays the static power consumption of the entire experimental platform. When the experimental circuit is working, it can display the working power consumption of the experimental circuit. Secondly, the current supplied to the experimental circuit can be controlled by the adjustable current limiting sound and light alarm self-locking reset circuit. When the current exceeds the set value when the experimental circuit is working, the power supply current is cut off, and at the same time, the sound and light alarm is used to remind students to check and eliminate circuit faults in time. After pressing the reset button, the power supply can be restored, which plays a role in protecting the experimental electronic components and the circuit unit devices of the experimental platform.

[0007] The clock signal source circuit unit includes a clock signal output, which can provide a 5V continuously adjustable 1Hz-10kHz CP signal for the digital experimental circuit.

[0008] The digital logic input and output circuit includes 4 independent logic inputs and 4 independent logic outputs, and can provide 4-way logic input signals and 4-way logic output indications for the digital experimental circuit.

[0009] The breadboard circuit building unit includes a 100x100mm breadboard, on which analog electronic and digital electronic experimental circuits can be built, debugged and measured.

[0010] The digital tube display circuit unit includes a 7-segment digital tube without decoding and a 7-segment digital tube with decoding. It can provide 2-way digital tube display for the digital experimental circuit, and both digital tubes are common cathode digital tubes.

[0011] The beneficial effects of the utility model are:

[0012] This utility model mainly ensures that the functions and performance indicators of electronic technology experimental equipment meet the most basic electronic circuit experimental requirements, while greatly miniaturizing and reducing the cost of portable electronic technology experimental equipment, realizing a simple portable small electronic technology experimental box with general functions, small size and extremely low cost. The affordable price makes it possible for most students to buy it by themselves, carry it with them, and conduct electronic technology experiments anytime and anywhere. It can bring convenience to the majority of learning groups and users, and also has broad market prospects and great economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 2 is a functional structure diagram of the utility model;

[0014] The numbers in the figure are Ⅰ DC regulated power supply circuit unit, Ⅱ power display protection circuit unit, Ⅲ signal source circuit unit, Ⅳ digital logic input and output circuit unit, Ⅴ breadboard circuit building unit, and Ⅵ digital tube display circuit unit.

[0015] Figure 2 2 is a schematic diagram of an operation panel of the utility model;

[0016] The numbers in the figure are 1 current limiting adjustment, 2 overcurrent LED indication, 3 normal LED indication, 4 current limiting reset button, 5 voltage and current indication, 6 7-segment digital tube, 7 digital tube with decoding, 8 clock signal frequency adjustment, 9 clock signal gear selection, 10 clock signal output, 11 4-bit logic output, 12 power ground, 13 +5V power supply, 14 + adjustable power output, 15 4-bit logic input, 16 overcurrent protection buzzer prompt, 17 DC power supply Type C input, 18 power regulation, and 19 breadboard.

[0017] Figure 3 2 is a schematic diagram of the external dimensions of the utility model;

[0018] The overall dimensions in the figure are length 100mm, width 100mm, and height 40mm. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. The specific implementation methods of the present invention will be described below in conjunction with the accompanying drawings. Example

[0020] like Figure 1 As shown, a simple portable small electronic technology experiment box includes a DC regulated power supply circuit unit I, a power display protection circuit unit II, a clock signal source circuit unit III, a digital logic input and output circuit unit IV, a breadboard circuit building unit V, and a digital tube display circuit unit VI, which are composed of 6 circuit units in total.

[0021] The input end of the DC regulated power supply circuit unit I is connected to the +5V power supply of an external power bank or mobile phone charging adapter, and the output is respectively connected to the power display protection circuit unit II, the clock signal source circuit unit III, the digital logic input and output circuit unit IV, the breadboard circuit construction unit V and the digital tube display circuit unit VI to provide working power for them. The power display protection circuit unit II is connected to control the DC regulated power supply circuit unit I to achieve adjustable overload protection, ensure the reliable operation of each unit, and ensure that the experimental circuit failure will not burn the electronic components.

[0022] like Figure 2 As shown, the DC regulated power supply circuit unit I includes a DC Typec input port, adjustable +1.5V~+12V and +5V output power. The +5V power supply of the power bank or mobile phone charging adapter can stably provide adjustable +1.5V~+12V and +5V output to power the experimental circuit, and provide working power for each circuit unit. The adjustable +1.5V~+12V power supply has a voltage adjustment range of +1.5V~+12V. Clockwise adjustment increases the output voltage, and counterclockwise adjustment decreases it.

[0023] The power display protection circuit unit II includes a digital display head and an adjustable current limiting sound and light alarm self-locking reset circuit. It can display the voltage of the adjustable +1.5V~+12V power supply and the current of all power supplies in real time. When the experimental circuit is not working, it displays the static power consumption of the entire experimental platform, and when the experimental circuit is working, it can display the working power consumption of the experimental circuit. The current supplied to the experimental circuit can also be controlled by the adjustable current limiting sound and light alarm self-locking reset circuit. When the current exceeds the set value when the experimental circuit is working, the power supply current is cut off, the normal power supply indicator light goes out (green), the overcurrent indicator light is on (red), and the buzzer sounds an alarm. Only when the student eliminates the fault and presses the reset button can the power supply be restored, which plays a role in protecting the experimental electronic components and the circuit unit devices of the experimental platform.

[0024] The clock signal source circuit unit III includes a clock signal output. It can provide a 5V continuously adjustable 1Hz-10kHz CP signal to the experimental circuit for use in the digital experimental circuit. The clock signal output waveform is a square wave, amplitude: +5V, frequency: 1Hz-10kHz, the clock signal has a total of 4 frequency gear selections, which are set through the jumper cap, and the signal frequency is fine-tuned by adjusting the potentiometer and indicated by a yellow LED. Gear: 1: 1Hz-10Hz, 2: 10Hz-20Hz, 3: 20Hz-100Hz, 4: 600Hz-10kHz.

[0025] The digital logic input and output circuit unit IV includes 4 independent logic inputs and 4 independent logic outputs. It can provide 4-way logic input signals and 4-way logic output indications for the digital experimental circuit. The 4 independent logic inputs can be used to input 4-bit 0 or 1 logic levels, the 4 ways are independent of each other, and the 4 ways are indicated by LEDs; the 4-bit logic input is input by 4 self-locking switches, the self-locking switch is pressed to a high level and the white LED is lit, the input is logic 1, the self-locking switch is popped up to a low level and the white LED is off, the input is logic 0; the 4-bit logic output is output by 4 3P sockets, when the output is high level, the corresponding red LED is lit, the output is logic 1, when the output is low level, the corresponding red LED is off, the output is logic 0.

[0026] The breadboard circuit building unit V includes a 100x100mm breadboard, on which analog electronic and digital electronic experimental circuits can be built, debugged and measured. Due to its small area, only electronic circuits with simple structures can be built.

[0027] The digital tube display circuit unit VI includes a 7-segment digital tube without decoding and a 7-segment digital tube with decoding. It can provide 2-way digital tube display for the digital experimental circuit, and the digital tubes are all common cathode digital tubes. Among them, the digital tube display without decoding circuit can directly display the digital characters through the seat input signal on the side of the digital tube. The seats are a, b, c, d, e, f, g, dp from top to bottom, where dp is the decimal point control; the decoding chip of the digital tube with decoding is 74LS48, and the digital characters are displayed through the seat input signal under the digital tube. The seats are A, B, C, D, dp from left to right, where dp is the decimal point control.

[0028] like Figure 3 As shown, the final pocket experiment platform shell dimensions are 100 mm in length, 100 mm in width, and 40 mm in height, and the box material is engineering plastic.

[0029] The process of using the above platform is as follows: first plug in a power bank or a mobile phone charging adapter to power the simple portable small electronic technology experiment box, and adjust the overcurrent protection threshold.

[0030] Secondly, build the experimental circuit on a small breadboard, power the circuit, input the corresponding signal, and use a small multimeter and pocket mini oscilloscope to debug and measure the experimental circuit. In this way, electronic circuit experiments can be carried out at any time and place, without being restricted by time and experimental venues. This experimental box can complete various simple electronic technology experimental projects.

[0031] Finally, as long as the experiment is carried out according to the operating specifications, the electronic components will not be burned. If the protection is triggered, as long as the fault is eliminated and the protection button is reset, the experiment can be carried out again; if the fault cannot be eliminated and the protection button cannot be reset, the experiment cannot be carried out again. This not only protects the electronic components of the experiment but also encourages students to learn to carefully eliminate experimental faults.

Claims

1. A simple portable small electronic technology experiment box, characterized in that: It includes a DC regulated power supply circuit unit, a power display protection circuit unit, a clock signal source circuit unit, a digital logic input and output circuit unit, a breadboard circuit construction unit, and a digital tube display circuit unit. The input end of the DC regulated power supply circuit unit is connected to a +5V power supply of an external power bank or a mobile phone charging adapter, and the output end is respectively connected to the power display protection circuit unit, the clock signal source circuit unit, the digital logic input and output circuit unit, the breadboard circuit construction unit, and the digital tube display circuit unit. The power display protection circuit unit is connected to and controls the DC regulated power supply circuit unit.

2. A simple portable small electronic technology experiment box as claimed in claim 1, characterized in that: The DC regulated power supply circuit unit includes a DC Typec input port, adjustable +1.5V~+12V and +5V output power supplies, which stably provide adjustable +1.5V~+12V and +5V outputs from the power bank or mobile phone charging adapter to power the experimental circuit, and provide working power for each circuit unit.

3. A simple portable small electronic technology experiment box as claimed in claim 1, characterized in that: The power display protection circuit unit includes a digital display head and an adjustable current limiting sound and light alarm self-locking reset circuit. The digital display head is used to display the voltage of the adjustable +1.5V~+12V power supply and the current of all power supplies in real time. When the experimental circuit is not working, the static power consumption of the entire experimental platform is displayed, and when the experimental circuit is working, the working power consumption of the experimental circuit is displayed; the adjustable current limiting sound and light alarm self-locking reset circuit is used to limit the current supplied to the experimental circuit. When the current exceeds the set value when the experimental circuit is working, the power supply current is cut off, the normal power supply indicator light goes out, the overcurrent indicator light is on, and the buzzer sounds an alarm. When the fault is eliminated, press the reset button to restore the power supply.

4. A simple portable small electronic technology experiment box as claimed in claim 1, characterized in that: The clock signal source circuit unit includes a clock signal output, which provides a 5V continuously adjustable 1Hz-10kHz clock signal to the digital experimental circuit. The clock signal output waveform is a square wave. There are 4 frequency gears to choose from, which are set through jumper caps. The signal frequency is fine-tuned by adjusting the potentiometer and indicated by a yellow LED. The gears include gear 1: 1Hz-10Hz, gear 2: 10Hz-20Hz, gear 3: 20Hz-100Hz, and gear 4: 600Hz-10kHz.

5. A simple portable small electronic technology experiment box as claimed in claim 1, characterized in that: The digital logic input and output circuit unit includes 4 independent logic inputs and 4 independent logic outputs. The 4-bit logic input is input by 4 self-locking switches. When the self-locking switch is pressed, it is a high level and the white LED is on, and the input is logic 1. When the self-locking switch is popped up, it is a low level and the white LED is off, and the input is logic 0. The 4-bit logic output is output by 4 3P sockets. When the output is high level, the corresponding red LED is on, and the output is logic 1. When the output is low level, the corresponding red LED is off, and the output is logic 0.

6. A simple portable small electronic technology experiment box as claimed in claim 1, characterized in that: The breadboard circuit building unit includes a 100x100mm breadboard, which is used to complete the construction, debugging and measurement of analog electronic and digital electronic experimental circuits.

7. A simple portable small electronic technology experiment box as claimed in claim 1, characterized in that: The digital tube display circuit unit comprises a 7-segment digital tube without decoding and a 7-segment digital tube with decoding, and both digital tubes are common cathode digital tubes.

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