Portable economical electronic technology pocket experiment platform

Abstract

The utility model relates to a portable economical electronic technology pocket experiment platform, which comprises a direct-current stabilized power supply circuit unit, an alternating-current power supply circuit unit, a power supply display protection circuit unit, a 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. A voltage and current real-time display function and an adjustable current-limiting sound-light alarm self-locking reset function are provided; and the adjustable AC 6-11 V 50Hz power supply is powered by the power bank. An alternating current power supply rectification filtering direct current stabilized voltage power supply experiment which cannot be completed by other similar equipment can be completed, an adjustable current-limiting sound-light alarm self-locking reset circuit is used for ensuring that experiment components are basically not burnt in the experiment process, and finally the performance and experience of an electronic technology experiment are improved. The multifunctional electronic experiment table is multifunctional, small in size, low in cost of about 1000 yuan, portable, capable of carrying out basic electronic technology experiments anytime and anywhere, and wide in market prospect and economic value.

Description

Technical Field

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

[0002] The electronic technology experimental equipment in schools are all experimental box structures, which are large in size and expensive. They cannot be carried outside the laboratory for use and can only be used in the laboratory. Students cannot take them out of the laboratory for independent learning, which limits the space for students to play their own role in electronic technology experiments. With the rapid development of electronic technology, miniaturized electronic products have become possible, and miniaturized electronic technology experimental equipment has begun to appear. In recent years, there have been small portable electronic technology pocket experimental platforms on the market, with few models and types. Some fully functional experimental platforms are highly integrated, small in size, and expensive, about RMB 3,000. Most schools cannot provide one set for each student, and they also need to be equipped with a computer to install its virtual instrument to conduct experiments. The virtual instrument has limited accuracy, low power, and weak anti-interference. There is no AC power supply to complete the DC regulated power supply experimental project. Under the premise of ensuring the function and volume of the small portable electronic technology pocket experimental platform, in order to further reduce the price of the experimental platform and enrich its functions and performance, a portable economical electronic technology pocket experimental platform is designed. The electronic technology pocket experimental platform is small in size and cheap, only about RMB 1,000. It has many more functions, such as real-time display of voltage and current, adjustable current limiting sound and light alarm self-locking reset function; an adjustable AC 6~11V 50Hz power supply for power bank has been added. Summary of the invention

[0003] The utility model provides a portable economical electronic technology pocket experiment platform, further reducing the price of the portable electronic technology pocket experiment platform, improving its performance and increasing its functions. The substantial price reduction can also ensure that each student has a set. It can complete most electronic technology experiment projects with a power of less than 10W, and can also complete AC power supply rectification and filtering DC voltage-stabilized power supply experiments that other similar equipment cannot complete. In addition, the adjustable current limiting sound and light alarm self-locking reset circuit ensures that the experimental components will basically not be burned during the experiment, ultimately improving the performance and experience of electronic technology experiments.

[0004] The technical solution of the utility model is: a portable economical electronic technology pocket experiment platform, including a DC regulated power supply circuit unit, an AC power supply circuit unit, a power display protection circuit unit, a 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 are composed of 7 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 AC power supply circuit unit, the power display protection circuit unit, the 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 and controls the DC regulated power supply circuit unit to realize 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, ±12V, adjustable ±1.5V~±10.5V and +5V output power. The +5V power supply of a power bank or a mobile phone charging adapter can stably provide output ±12V, adjustable ±1.5V~±10.5V and +5V to power the experimental circuit, and provide working power for each circuit unit.

[0006] The AC power circuit unit includes an AC Type C input port, a DC / AC inverter module and an adjustable AC 6 ~ 11V 50Hz output power supply. It can stably provide an adjustable AC 6 -11V 50Hz power supply from another power bank or mobile phone charging power supply. The maximum input power supply cannot exceed +9V, which can be used to complete experiments such as AC rectification and filtering DC regulated power supply.

[0007] The power display protection circuit unit includes a digital display head, an adjustable current limiting sound and light alarm self-locking reset circuit, a signal power switch and a digital power switch. It can display the voltage and current of the +5V power supply input to the power bank or mobile phone charging adapter. 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. 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, and an sound and light alarm is performed to remind students to check and eliminate circuit faults in time. The power supply can be restored after pressing the reset button, which plays a role in protecting the experimental electronic components and the circuit unit devices of the experimental platform. In order to reduce the static power consumption of the experimental platform, the signal source circuit and the power supply of the control digital tube, clock signal, 8-bit logic input, 8-bit logic output, and edge signal are controlled to save the input power bank power;

[0008] The signal source circuit unit includes four signal outputs: sine wave, triangle wave, square wave and clock signal. It can provide the experimental circuit with continuously adjustable 0-3V 1Hz-1.3MHz sine wave, triangle wave, 8V 1KHz square wave signal for analog experimental circuits, and can also provide 5V continuously adjustable 1Hz-10kHz clock signal for digital experimental circuits.

[0009] The digital logic input and output circuit unit has 8 independent logic inputs and 8 independent logic outputs, and can provide 8-way logic input signals and 8-way logic output indications for the digital experimental circuit.

[0010] The breadboard circuit building unit includes two 175x145mm breadboards, on which analog electronic and digital electronic experimental circuits can be built, debugged and measured.

[0011] The digital tube display circuit unit includes 2 7-segment digital tubes without decoding and 2 7-segment digital tubes with decoding, and can provide 4-channel digital tube display for the digital experimental circuit, and the digital tubes are all common cathode digital tubes.

[0012] The beneficial effects of the utility model are:

[0013] The utility model mainly ensures that the functions and performance indicators of electronic technology experimental equipment meet the requirements of electronic technology experiments in colleges and universities, and makes the electronic technology experimental equipment highly integrated, multifunctional, miniaturized and low-cost, thus realizing a multifunctional, small-volume, low-cost portable economical electronic technology pocket experimental platform. With an affordable price, students can equip one set per person, carry it with them, and conduct electronic technology experiments anytime and anywhere, which 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

[0014] Figure 1 2 is a functional structure diagram of the utility model;

[0015] The numbers in the figure are Ⅰ DC regulated power supply circuit unit, Ⅱ AC power supply circuit unit, Ⅲ power display protection circuit unit, Ⅳ signal source circuit unit, Ⅴ digital logic input and output circuit unit, Ⅵ breadboard circuit building unit, and Ⅶ digital tube display circuit unit.

[0016] Figure 2 2 is a schematic diagram of an operation panel of the utility model;

[0017] 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 positive power supply adjustment, 7 negative power supply adjustment, 8 7-segment digital tube, 9 digital tube with decoding, 10 signal source frequency coarse adjustment, 11 signal source frequency fine adjustment, 12 signal source amplitude adjustment, 13 clock signal frequency adjustment, 14 clock signal gear selection, 15 signal power switch, 16 sine / triangle signal selection, 17 signal source gear selection, 18 digital power switch, 19 edge signal input, 20 edge signal output, 21 clock signal output, 22 sine / triangle signal output, 23 square wave signal output, 24 8-bit logic output, 25 digital ground, 26 digital +5V, 27 analog ground, 28-adjustable power output, 29 50Hz AC power output, 30+adjustable power output, 31-12V, 32+12V, 33 8-bit logic input, 34 AC power regulation, 35 AC power Type C input, 36 AC power LED indication, 37 overcurrent protection buzzer prompt, 38 DC power Type C input.

[0018] Figure 3 Schematic diagram of the dimensions of the utility model

[0019] The overall dimensions in the figure are 200mm in length, 150mm in width and 25mm in height. DETAILED DESCRIPTION

[0020] 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

[0021] like Figure 1As shown, a portable economical electronic technology pocket experiment platform includes a DC regulated power supply circuit unit I, an AC power supply circuit unit II, a power display protection circuit unit III, a signal source circuit unit IV, a digital logic input and output circuit unit V, a breadboard circuit construction unit VI, and a digital tube display circuit unit VII, which are composed of 7 circuit units in total. 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 a mobile phone charging adapter, and the output is respectively connected to the AC power supply circuit unit II, the power display protection circuit unit III, the signal source circuit unit IV, the digital logic input and output circuit unit V, the breadboard circuit construction unit VI and the digital tube display circuit unit VII to provide working power for them. The power display protection circuit unit III connects and controls the DC regulated power supply circuit unit I to achieve adjustable overload protection, ensure the reliable operation of each unit, and ensure that the electronic components will not be burned by the experimental circuit failure.

[0022] like Figure 2 As shown, the DC regulated power supply circuit unit I includes a DC Typec input port, ±12V, adjustable ±1.5V~±10.5V and +5V output power. The +5V power supply of the power bank or mobile phone charging adapter can stably provide output ±12V, adjustable ±1.5V~±10.5V, +5V to power the experimental circuit, and provide working power for each circuit unit. The adjustable ±1.5V~±10.5V power supply adjusts the output voltage of the positive power supply, the adjustment range is 1.5V~10.5V, clockwise adjustment increases the output voltage, otherwise, counterclockwise reduction; adjust the output voltage of the negative power supply, the adjustment range is -1.5V~-10.5V, clockwise adjustment increases the output voltage, otherwise, counterclockwise reduction.

[0023] AC power circuit unit II includes AC Typec input port, DC / AC inverter module and adjustable AC 6 ~11V50Hz output power. It can stably provide output adjustable AC 6 -11V 50Hz power from another power bank or mobile phone charging power supply. The maximum input power cannot exceed +9V, which can be used to complete experiments such as AC rectification and filtering DC regulated power supply. The AC power adjustment knob can adjust the size of the AC power supply. Clockwise to increase the AC power output, and counterclockwise to reduce it. The AC power LED is used to indicate the input of the AC power. The green LED lights up in normal conditions and goes out in abnormal conditions.

[0024] The power display protection circuit unit III includes a digital display head, an adjustable current limiting sound and light alarm self-locking reset circuit, a signal power switch and a digital power switch. It can display the voltage and current of the +5V power supply input to the power bank or mobile phone charging adapter. 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. The current supplied to the experimental circuit can also be limited 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 the sound and light alarm is used to remind students to check and eliminate circuit faults in time. The power supply normal 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. In order to reduce the static power consumption of the experimental platform, the signal source switch controls the power supply of the signal source. Turning it to the upper end (ON) is turned on, and turning it to the lower end is turned off. The digital power switch controls the power of the digital tube, clock signal, 8-bit logic input, 8-bit logic output, and edge signal. Turn it to the upper end (ON) to turn it on, and turn it to the lower end to turn it off, saving power input from the power bank.

[0025] Signal source circuit unit IV includes four signal outputs: sine wave, triangle wave, square wave and clock signal. It can provide the experimental circuit with continuously adjustable 0-3V 1Hz-1.3MHz sine wave, triangle wave, 8V 1KHz square wave signal for analog experimental circuit, and can also provide +5V continuously adjustable 1Hz-10kHz CP signal for digital experimental circuit. Among them, the sine wave frequency: 1Hz-1.3MHz, amplitude: 0-3V; the triangle wave frequency 1Hz-100kHZ, amplitude: 0-3V. The frequency setting can be selected through the jumper cap to select the frequency gear, and then combined with the frequency coarse adjustment and fine adjustment knob setting; the amplitude setting can be set through the amplitude adjustment knob; the waveform selection can select the sine wave or triangle wave output through the self-locking button, the button is pressed to output the sine wave, and the button is popped up to output the triangle wave; the square wave frequency: 1kHZ, amplitude: 8V, fixed and not adjustable; before use, the signal source power switch needs to be turned to the upper test (ON). The clock signal output waveform is a square wave, amplitude: +5V, frequency: 1Hz-10kHz. The clock signal has a total of 4 frequency gears to choose from, which are set through jumper caps. The signal frequency fine-tuning is set by adjusting the potentiometer and indicated by a yellow LED. Gear: 1: 1Hz-10Hz, 2: 10Hz-20Hz, 3: 20Hz-100Hz, 4: 600Hz-10kHz; the edge signal input can control the output signal to be rising or falling edge output through the self-locking switch. The self-locking switch is pressed for rising edge and popped up for falling edge. Before use, the digital power switch needs to be turned upward (ON).

[0026] The digital logic input and output circuit unit V includes 8 independent logic inputs and 8 independent logic outputs. It can provide 8-way logic input signals and 8-way logic output indications for the digital experimental circuit. The 8-bit independent logic input can be used to input 8-bit 0 or 1 logic levels, and the 8 channels are independent of each other, and the 8 channels are indicated by LEDs; the 8-bit logic input is input by 8 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 8-bit logic output is output by 8 3P sockets. When the output is high, the corresponding red LED is on, and the output is logic 1. When the output is low, the corresponding red LED is off, and the output is logic 0; before use, the digital power switch needs to be turned to the upper side (ON).

[0027] Breadboard Circuit Building Unit VI includes two 175x145mm breadboards, on which you can build, debug and measure analog and digital electronic experimental circuits. The area is relatively large, so you can build more complex electronic circuits.

[0028] The digital tube display circuit unit Ⅶ includes 2 7-segment digital tubes without decoding and 2 7-segment digital tubes with decoding. It can provide 4-channel digital tube display for the digital experimental circuit. The digital tubes are all common cathode digital tubes. Among them, the 2-channel digital tube display without decoding circuit can directly display the digital characters through the input signal of the row seat on the side of the digital tube. The row 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 2-channel digital tube with decoding is 74LS48, and the digital characters are displayed through the input signal of the row seat under the digital tube. The row seats are A, B, C, D, dp from left to right, where dp is the decimal point control; before use, the digital power switch needs to be turned upward (ON).

[0029] like Figure 3 As shown, the final shell size of the pocket experimental platform is 200mm in length, 150mm in width, and 25mm in height, and the box material is engineering plastic.

[0030] The specific usage method is as follows: first plug in a power bank or a mobile phone charging adapter to power the portable economical electronic technology pocket experiment platform, adjust the overcurrent protection, and turn on the signal power switch or the digital power switch according to the experiment to be done. If you are doing an analog electronic circuit experiment, turn on the signal power switch and turn off the digital power switch; if you are doing a digital electronic circuit experiment, turn on the digital power switch and turn off the signal power switch; reduce the working power consumption.

[0031] Secondly, build the experimental circuit on two breadboards, power the circuit, input the corresponding signal, and use a small multimeter and a 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 pocket experimental platform can complete various small and medium-sized electronic technology experimental projects, especially AC rectifier filter DC regulated power supply circuit experiments, which are experimental projects that other similar devices cannot complete. Just use another power bank or mobile phone charging adapter to power the adjustable AC circuit unit and adjust the 50Hz AC amplitude to conduct AC rectifier filter DC regulated power supply circuit experiments.

[0032] 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 portable and economical electronic technology pocket experiment platform, characterized in that: Including DC regulated power supply circuit unit, AC power supply circuit unit, power display protection circuit unit, signal source circuit unit, digital logic input and output circuit unit, breadboard circuit building unit, digital tube display circuit unit; 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 end is respectively connected to the AC power supply circuit unit, the power display protection circuit unit, the signal source circuit unit, the digital logic input and output circuit unit, the breadboard circuit building 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 to achieve adjustable overload protection.

2. A portable economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The DC regulated power supply circuit unit includes a DC Typec input port, ±12V, adjustable ±1.5V~±10.5V and +5V output power supplies, which stably output ±12V, adjustable ±1.5V~±10.5V, and +5V from the power bank or mobile phone charging adapter to power the experimental circuit, and provide working power for each circuit unit.

3. A portable and economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The AC power supply circuit unit includes an AC Typec input port, a DC / AC inverter module and an adjustable AC 6~11V 50Hz output power supply, which stably provides an adjustable AC 6-11V 50Hz power supply from the +5V power supply of another power bank or mobile phone charging power supply. The maximum input power supply does not exceed +9V, which is used to complete the AC rectifier filtering DC regulated power supply experiment; it also includes an AC power supply adjustment knob for adjusting the size of the AC power supply, and an AC power supply LED for indicating the input of the AC power supply. The green LED lights up under normal circumstances and goes out under abnormal circumstances.

4. A portable economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The power display protection circuit unit includes a digital display head, an adjustable current limiting sound and light alarm self-locking reset circuit, a signal power switch and a digital power switch. The digital display head is used to display the voltage and current of the +5V power supply input to the power bank or mobile phone charging adapter. When the experimental circuit is not working, the static power consumption of the entire experimental platform is displayed. 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, and an sound and light alarm is performed to remind students to check and eliminate circuit faults in time. 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; the signal source switch is used to control the power supply of the signal source, and turning it to the upper end is on, and turning it to the lower end is off; the digital power switch is used to control the power supply of the digital tube, clock signal, 8-bit logic input, 8-bit logic output, and edge signal. Turning it to the upper end is on, and turning it to the lower end is off.

5. A portable and economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The signal source circuit unit includes four signal outputs: sine wave, triangle wave, square wave and clock signal, providing continuously adjustable sine wave, triangle wave and fixed square wave signals for analog experimental circuits, and providing clock signals for digital experimental circuits; wherein the sine wave frequency is 1Hz-1.3MHz, and the amplitude is 0-3V; the triangle wave frequency is 1Hz-100kHZ, and the amplitude is 0-3V; the square wave frequency is 1kHZ, and the amplitude is 8V; the clock signal output waveform is a square wave, with an amplitude of +5V and a frequency of 1Hz-10kHz.

6. A portable and economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The digital logic input and output circuit unit includes 8 independent logic inputs and 8 independent logic outputs, and provides 8-way logic input signals and 8-way logic output indications for the digital experimental circuit.

7. A portable economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The breadboard circuit building unit includes two 175x145mm breadboards, which are used to build, debug and measure analog electronic and digital electronic experimental circuits.

8. A portable economical electronic technology pocket experiment platform as claimed in claim 1, characterized in that: The digital tube display circuit unit comprises 2 7-segment digital tubes without decoding and 2 7-segment digital tubes with decoding, and both the digital tubes are common cathode digital tubes.

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