1. Structural features
The experimental box is composed of an all-aluminum alloy box, a high-performance linear power supply, and an experimental circuit board. Among them, the experimental circuit adopts the fixed function module method, the circuit principle and components symbols are clear, and all the experimental components are welded on the reverse side of the circuit board, which is safe, reliable and not easy to damage. This platform is suitable for the experimental teaching of courses such as "Analog Electronic Technology" and "Electronic Circuit" for all electrical and non-electrical majors in the college.
2. technical indicators
1. Working power supply of the experiment box
Input: AC220V±10%, 50HZ.
DC regulated output: (1) DCV ±12V/0.5A; (2) DCV ±1.5V～±15V/0.5A;
AC low voltage output: (1) ACV 0V, 6V, 10V, 14V and dual 7.5V/0.2A with center tap.
2. Signal source:
1) DC signal source: Dual -5V～+5V, -0.5V～+0.5V continuously adjustable.
2) Function generator
Output waveform: square wave, triangle wave, sine wave
Amplitude: Sine wave: 0~10V (10V is peak-peak value, and the positive and negative are symmetrical)
Triangular wave: 0~14V (14V is peak-peak value, and the positive and negative are symmetrical)
Square wave: 0~14V (14V is peak-peak value, and the positive and negative are symmetrical)
Frequency range: four levels 10HZ～100HZ, 100HZ～1KHZ, 1KHZ～10KHZ, 10KHZ～100KHZ.
3. Single-stage amplifier circuit
4. Secondary amplifier circuit
5. Emitter follower circuit
6. Differential amplifier circuit
7. Thyristor control circuit
8. Integrated op amp circuit (①Voltage follower ②Inverse proportional amplifier ③Non-phase proportional amplifier ④Inverting sum proportional amplifier ⑤Dual-terminal input summing amplifier circuit ⑥Integral circuit Differential circuit ⑦Calculus circuit ⑧Square wave generator⑨ Rectangular wave generator with adjustable duty cycle ⑩ Triangular wave generating circuit (11) Sawtooth wave generating circuit
9. Half wave, full wave, bridge rectification and filtering
10. Parallel voltage regulator circuit
11. Series regulator circuit
12. Integrated power amplifier circuit with horn inside.
13. Complementary symmetrical power amplifier circuit
14. It is designed with 2 potentiometers, 1 speaker, 1 1×2 switch, 1 BT33 field effect transistor, 1 2P4M silicon controlled rectifier, and 1 integrated regulator tube 7805 and 7905.
15. Use a high-reliability self-locking anti-rotation socket as the experimental connection point.
16. One operational amplifier circuit experiment board, which contains two independent operational amplifiers (741), various resistors, capacitors, diodes, potentiometers, etc.
17. One 50MHZ liquid crystal display frequency meter designed with high-performance single-chip microcomputer.
18. It is designed with one DC voltmeter 0-30V and one DC ammeter 0-200MA each.
19. The reference size of the experiment box is about 500mm*381mm*158mm (length*width*height).
3. Experimental content
(1) Discrete component circuit experiment
1. Basic single-stage amplifier circuit
2. Two-stage amplifier circuit
3. Negative feedback amplifier circuit
4. Emitter follower
5. Differential amplifier circuit
6. Integrated circuit RC sine wave oscillator
7. Integrated power amplifier
8. Rectification filter and parallel voltage regulator circuit
9. Series voltage regulator circuit
10. Integrated voltage regulator circuit
11. RC sine wave oscillator
12. LC oscillator and frequency selective amplifier
13. Current/voltage conversion circuit
14. Voltage/frequency conversion circuit
15. Complementary symmetrical power amplifier
16. The forward and reverse characteristics of the diode
17. Input and output characteristics of transistors
18. Full-wave bridge bridge rectifier circuit experiment
19. Series transistor DC regulated power supply
20. Parallel DC regulated power supply
21. Integrated DC regulated power supply
(2) Integrated operational amplifier circuit experiment
1. Analog computing circuit
①Voltage follower ②Inverting proportional amplifier ③Non-phase proportional amplifier ④Inverting summing proportional amplifier ⑤Dual-terminal input summing amplifier circuit
2. Integral and differential circuits
① Integral circuit ② Differential circuit ③ Calculus circuit
3. Waveform generating circuit
① Square wave generator ② Rectangular wave generator with adjustable duty ratio ③ Triangular wave generating circuit ④ Sawtooth wave generating circuit
4. Active filter
①Low pass filter ②High pass filter ③Band stop filter
5. Voltage comparator
①Zero-crossing comparator ②Inverting hysteresis comparator ③Non-inverting hysteresis comparator
6. Waveform conversion circuit
7. Operational amplifier index test
8. Comprehensive experiment (external selection is required): assembly and debugging of function signal generator; temperature monitoring and control circuit; design and debugging of multimeter composed of operational amplifier.
4. Supporting accessories and information
1. A total of 25 experimental wires
2. One power cord
3. Two fuses
4. One experiment instruction book
Attachment: The use of this experiment box requires supporting instruments and meters (supplied by the school)
(1) Multimeter
(2) Oscilloscope
