Electronics and MCU training device

ZN-990A electronics and single-chip microcomputer training device
ZN-990A electronics and single-chip microcomputer training device is a set of economical and practical training platform developed for related courses such as analog electronic technology, digital electronic technology and single-chip technology. Desktop modular structure, double-station design, standard configuration of 17 hanging boxes, and single-chip simulator. The training platform integrates various power supplies, signal sources and power sockets for experiments, integrated computer desks, drawers, and equipment cabinets, and has an oscilloscope installation interface. Computer and oscilloscope are optional. Supporting series of simulation teaching software, ZN-990A integrated training platform for electronics and single-chip microcomputer can complete electronic technology, single-chip microcomputer and other related course experiments, training, and course design.

1. Technical performance
1. Input power: three-phase four-wire～220V±10% 50Hz
2. Temperature: -10℃～+40℃, relative humidity <85% (25℃)
3. Device capacity: <0.5KVA
4. Weight: 120Kg
5. Dimensions: 1400mm×700mm×1500mm
2. Basic configuration and function of training device
This training platform is mainly composed of training screen, training hanging box, and training table.
(1) Training screen The
training screen is made of iron double-layer matte dense pattern spray structure, aluminum panel, and provides DC power supply, function signal generator, test instrument and training device for the training hanging box.
1. Power supply part: The signal light is on when the power supply is input, the single-phase leakage switch is turned on, and the training platform starts to work.
1.1 AC power supply
1.1.1 Provide low-voltage AC power supply: 0V, 6V, 10V, 14V plug each one way and the center plug 17V two ways.
1.1.2 Provide 0-240V continuous adjustable AC power supply, and 0-250V DC power supply can be obtained at the same time through the rectification link, with meter indication.
1.2. DC power supply:
1.2.1 Four fixed DC power supplies: ±12V, ±5V, each with short-circuit and overload protection functions.
1.2.2 Two independent 0-30V continuously adjustable constant current stabilized power supplies, built-in relays for automatic gear shifting, multi-turn potentiometers for continuous adjustment, output current 2A, preset current limiting and protection functions, and automatic recovery functions . Connect the two 0-30V power supplies properly to obtain the output 0～±30V continuously adjustable or 0-60V continuously adjustable power supply.
2. Function signal generator: output sine wave, rectangular wave, triangle wave
2.1 Frequency range: 5Hz-550KHz, including five frequency bands.
2.2 Frequency indication: read directly by Hz meter.
2.3 Voltage output range: sine wave 5Hz-250KHz＞4.5V, 250KHz-550KHz＞3.5Hz
three-stage attenuation: 0db, 20db, 40db, with continuous fine-tuning
rectangular wave: 5Hz-250KHz＞4.5V, 250KHz-550KHz＞3.5Hz , Triangular wave with continuously adjustable amplitude: 5Hz-250KHz＞1V
3. Continuous count pulse: output frequency 0.5-300KHz.
4. Single pulse: a pair of positive and negative pulses can be output each time.
5. Audio power amplifier: The input audio voltage is not less than 10mV, the output power is not less than 1W, the volume is adjustable, there is a speaker inside, which is used for amplifying the amplifier circuit, and can also be used for signal tracking.
6. Seven-segment decoder: 6 groups of seven-segment decoders and corresponding decoding display nixie tubes.
7. Logic level display: 8-bit LED display
8. Logic level switch: 8-bit switch level output
9. One smart digital display DC digital voltmeter: Designed with ICL’s high-performance AD ​​converter and high-speed MPU unit The control mode of man-machine dialogue function is realized through keying and digital display window. With automatic and manual range, measuring range: 0-200V. Manual ranges are: 2V, 20V, 200V. The measurement accuracy is 0.5 level. With data storage and query functions. It has the functions of over-range alarm, indication and cut off the main power supply.
10. One intelligent digital display DC digital ammeter: It is designed with ECL high-performance AD ​​converter and high-speed MPU unit, and realizes the control mode of man-machine dialogue function through keying and digital display window. With automatic and manual range, measuring range: 0-2000mA. The manual ranges are: 20mA, 200mA, 2000mA. The measurement accuracy is 0.5 level. With data storage and query functions. It has functions such as over-range alarm and indication.
(2) Training hanging box
1, DZJ-01 triode amplifier circuit
2, DZJ-02 field effect tube and negative feedback amplifier circuit
3, DZJ-03 integrated operational amplifier application (1)
4. DZJ-04 integrated operational amplifier application ( Two)
5. DZJ-05 integrated operational amplifier application (three)
6. DZJ-06 oscillation circuit and power amplifier circuit
7. DZJ-07 DC stabilized power supply circuit
8. DZJ-08 digital circuit training hanging box
9. DZJ-09 Comprehensive training hanging box
10, DZJ -10 single-chip experiment hanging box (1)
11. DZJ -11 single-chip experimental hanging box (2)
12. DZJ 12 single-chip experiment hanging box (3)
13. DZJ -13 single-chip experiment hanging box ( Four)
14. DZJ -14 single-chip experiment hanging box (5)
15. DZJ -15 single-chip experiment hanging box (6)
16. DZJ -16 single-chip experiment hanging box (7)
17. DZJ -17 single-chip experiment hanging box (8)
(3) Training table
The training table is made of iron double-layer matt dense pattern spraying, and the tabletop is made of fireproof, waterproof, and wear-resistant high-density board. The structure is firm and the appearance is beautiful and generous. There is a component storage cabinet under the training table, which can be placed in the training hanging box, and there are four wheels with brakes for easy movement and fixation. The training platform has a five-hanging box structure, which can be connected to five hanging boxes at the same time. The hanging box has its own power control switch, and it is easy to use through the socket built in the training platform.
3. Training project
(1) Analog circuit Basic skills training
1. The forward characteristic of the diode
2. The reverse characteristic of the diode
3. The switching characteristics of the diode
4. Diode clamp
5. Diode limiter
6. Transistor input and output characteristics
7. Basic triode amplifier
8. Triode limiter
9. Constant voltage source circuit
10. Constant current source circuit
11. Triode switching characteristics
12. Triode practical circuit
13. Low frequency small signal amplifier
14. Single-pole small signal voltage amplification with load
15. Voltage negative feedback bias circuit
16. Series current negative feedback circuit
17. Series voltage negative feedback circuit
18. Parallel voltage negative feedback circuit
19. Parallel current negative feedback circuit
20. Emitter output circuit
21. Autonomous emitter output circuit
22. Use resistance to increase emitter potential
23. Use a voltage regulator tube to increase the emitter potential
24. Use negative feedback to eliminate self-excited oscillation
25. Single tube small signal amplifier
26. Two-tube bipolar amplifier
27. Junction effect tube amplifier
28. Field effect transistor voltage divider type self-bias circuit
29. Attenuate high frequency voltage with capacitor
30. Emitter follower
31. Differential amplifier
32. Long-tail differential amplifier
33. Differential input single-ended output
34. OTL complementary symmetrical amplifier
35. OTL power amplifier
36. Differential input operational amplifier
37. RC phase shift oscillator
38. PC bridge oscillator
39. Inductive oscillator
40. Quartz crystal oscillator
41. Capacitor three-point oscillator
42. Transformer feedback oscillator
43. Double T frequency selection network
44. Rectangular wave oscillator
45. Sawtooth oscillator
46. Sine wave oscillator
47. Audio oscillator
48. Sine wave and cosine wave oscillator
49. Basic circuit of differential amplifier
50. Constant current source differential amplifier
51. Dual-supply differential amplifier
52. Single-ended input single-ended output
53. Differential input double-ended output
54. Constant voltage source Constant current source
55. Three-tube OTL complementary symmetrical amplifier
56. Four-tube OTL complementary push-pull power amplifier
57. Integrated power amplifier
58. The volt-ampere characteristics of the diode
59. Capacitor blocking characteristics
60. Basic amplification principle of triode
61. Common base circuit
62. Common emitter circuit
63. Common collector circuit
64. Voltage divider current negative feedback bias circuit
65. Use thermistor to stabilize the operating point
66. Diode stable operating point
67. Common source amplifier circuit
68. Common drain amplifier circuit
69. Common gate amplifier circuit
70. Non-inverting operational amplifier
71. In-phase input protection measures
72. Basic in-phase operation circuit
73. Basic circuit of inversion operation
74. Inverting input protection measures
75. In-phase input summation
76. Double-ended input summation
77. Inverting input summation
78. Simple zero-crossing comparison circuit
79. Double limit comparison circuit
80. Basic bandpass filter circuit
81. Rectangular wave oscillator
82. Transformer rectifier filter circuit
83. Bridge rectifier voltage regulator circuit
84. Voltage doubler rectifier
85. Three-terminal integrated voltage regulation
86. Three-terminal adjustable integrated voltage regulation
87. Electronic filter
88. Continuously adjustable regulated power
supply89. Soft start of stabilized power supply
90. Resistor-capacitor diode storage and distribution of thyristor
91. Electronic voltage regulator
92. Thyristor trigger circuit
93. Stabilized power supply with amplifying link
94. Parallel stabilized power supply
95. Series regulated power supply
(2) Basic skills training of digital circuits
1. Parameter test of TTL integrated logic gate2
. 2. Parameter test of CMOS logic gate
3. 3. Application of TTL integrated electrode open-circuit gate and three-state output gate4
. AND, NOT, OR, and NAND gate circuit experiment
5. Half adder circuit is real
6. Full adder circuit experiment
7. RS flip-flop experiment
8. D flip-flop experiment
9. JK flip-flop experiment10
. T flip-flop experiment
11. JK type flip-flop is converted into D flip-flop
12. D-type flip-flop is converted into JK flip-flop
13. Counter experiment
14. MSI shift register and its application
15. Decoder and its conversion method
16. MSI data selector and logic design
17. Differential monostable circuit
18. Ring multivibrator
19. Use gate circuits to form encoders, distributors, and selectors
20. One of the design of combinational circuit-code conversion
21. The design of combinational circuit two-one display circuit
22. Design of synchronous sequential circuit
23. The design of computer sequential circuit
24. Integrated timer test and application
25. CMOS integrated A/D, D/A conversion circuit experiment
26. Diode NOT gate, NOR gate circuit
27. Triode not gate, NAND gate, NOR gate circuit
28. Asynchronous decimal subtraction counter
29. Asynchronous decimal addition counter
30. Comprehensive ability training experiment-electronic stopwatch
(3) Comprehensive circuit training
1. Temperature control circuit
2. Automatic opening and closing circuit of exhaust fan
3. Light control circuit
4. Light control circuit switch
5. Flight gear lights
6. Music doorbell circuit
7. Electronic doorbell circuit
8. Electronic alarm
9. Music alarm
10. Flash
11. Household lamp dimming circuit
(four), single-chip microcomputer experiment content
1. Clear the memory block
2. 2. Binary to BCD code conversion
3. 3. Binary to ASCII code conversion
4. Program jump table
5. Memory block movement
6. Data sorting
7. P1 port input and output experiment
8. Relay control experiment
9. Use 74LS244 to read in data10
. Use 74LS273 to output data
11. Serial data conversion parallel data
12. Parallel data conversion to serial data
13. PWM conversion voltage experiment
14. Audio control experiment
15.8255 input, output experiment
16.8155 input, output experiment
17.5 LED static serial display experiment
18.6 LED dynamic scanning display experiment
19. Query keyboard experiment
20. Array keyboard experiment
21. Counter experiment
22. Timer experiment
23.8253 experiment timer
24. External interruption experiment
25. Serial port communication experiment
26. ADC0809 analog-to-digital conversion experiment
27. DAC0832 digital-to-analog conversion experiment
28. MC14433 analog-to-digital conversion experiment
29. EEPROM external data program memory experiment
30. SRAM external data memory expansion experiment
31. 93C46 serial EEPROM data reading and writing experiment
32. Electronic clock experiment
33. Electronic keyboard simulation experiment
34. Printer control experiment
35. Car turning signal light control experiment
36. Temperature sensor temperature control experiment
37. Temperature process control simulation experiment
38. Five-phase stepping motor simulation experiment
39. Calculator experiment
40. Digital frequency meter experiment
41. V/F conversion experiment
42. F/V conversion experiment
43. LED dot matrix display experiment
44. Character LCD screen control experiment
45.8279 keyboard scan display experiment
46. Watchdog experiment
47.8251 serial port expansion communication experiment
48. I2C bus read and write experiment
49. RS232 to RS485 experiment
50. USB interface experiment
51. Crossroad traffic light control experiment
52. Five-function logic pen experiment
53. DC motor drive speed regulation experiment (in kind)
54. Stepping motor drive experiment (in kind)
55. IC card reading and writing experiment
56. Real-time clock/calendar control experiment
57. Voice chip control experiment
58. One-chip computer and CPLD experiment
59. 8051 and PC serial port communication experiment
60. Flash Rom external program memory experiment
61. Multifunctional password lock experiment