Product Introduction

The experimental box consists of an aluminum-wood alloy box, a high-performance linear power supply, and an experimental circuit board. The experimental circuit adopts a fixed function module method, and the circuit principle and component symbols are clear. The experimental components can be soldered on the back of the circuit board, which is safe, reliable, and not easy to damage. They can also be installed on the front of the circuit board. The components are intuitively visible and have a strong perceptual understanding. There is also an experimental circuit schematic on the front, so that students can understand the principle at a glance during the experiment.

Technical Specifications

1. Working Power Supply
   • Input: AC220V±10%, 50HZ.
   • Output:
     • ACV 0V, 14V, 16V, 18V and dual 7.5V low-voltage AC power supply with center tap (AC50Hz). With short-circuit protection function.
     • DCV ±1.5V～±15V continuously adjustable, with short-circuit protection automatic recovery function.
     • DCV ±12V/0.5A, 5V/0.5A, with short circuit protection and automatic recovery function.
   • Complete power supply protection circuit: overcurrent protection, overvoltage protection, reverse connection protection.
2. Signal source
   • DC signal source: Dual-channel -5V～+5V, -0.5V～+0.5V continuously adjustable.
   • Function generator
     • Output waveform: square wave, triangle wave, sine wave
     • Amplitude: Sine wave: 0～10V (10V is peak-to-peak value, and positive and negative are symmetrical)
     • Triangle wave: 0～20V (20V is peak-to-peak value, and positive and negative are symmetrical)
     • Square wave: 0～20V (20V is peak-to-peak value, and positive and negative are symmetrical)
     • Frequency range: divided into four levels: 10HZ～100HZ, 100HZ～1kHz, 1kHz～10kHz, 10kHz～100kHz.
3. Single-stage amplifier circuit
4. Two-stage amplifier circuit
5. Emitter follower circuit
6. Differential amplifier circuit
7. Negative feedback amplifier circuit
8. Half-wave, full-wave, and bridge rectifier and filter circuits
9. Shunt voltage regulator circuit
10. Integrated power amplifier circuit
11. Complementary symmetrical power amplifier circuit
12. Two operational amplifier circuits
13. RC sine wave oscillator circuit
14. Discrete component area: Designed with an 8Ω speaker, a bridge rectifier, a BT33 unijunction transistor, a 470uF and a 0.1uF capacitor, four 5.1V Zener diodes, a transistor connector, an integrated Zener diode connector, a 1W/51 resistor, and a 51k resistor. There is also an access area for discrete components such as diodes, capacitors, resistors, and transistors. Long silver-plated copper tubes serve as jacks to accommodate pins of varying sizes.
15. Extended Experimental Area: Several 8- and 14-pin IC round sockets; connectors for resistors and capacitors; and connectors for transistors.
16. The experimental board is made of 2mm thick printed circuit board.
17. Highly reliable, self-locking, anti-folding sockets are used as experimental connection points.
18. Chassis Material: Aluminum-wood alloy, elegant design. Chassis Dimensions: 480 * 360 * 148 mm.
19. Experimental Circuit Connections: All signal leads utilize self-locking, gold-coated sockets, which resist oxidation and provide stable and reliable connections.

Experimental content

(I) Discrete component circuit experiment

1. Single-stage AC amplifier
2. Two-stage RC coupled amplifier circuit
3. Negative feedback amplifier circuit
4. Emitter follower
5. Differential amplifier circuit
6. Proportional summation circuit
7. Integral and differential circuits
8. Waveform generation circuit
9. Active filter
10. Voltage comparator
11. Integrated power amplifier
12. Complementary symmetric power amplifier
13. Rectification filter and parallel voltage regulator circuit
14. Integrated voltage regulator
15. Series voltage regulator circuit
16. Integrated circuit RC sinusoidal filter oscillator
17. Current/voltage conversion circuit
18. Voltage/frequency conversion circuit
19. Waveform conversion circuit