AFE5016 AM Trainer Vocational Training Equipment Electrical Laboratory Equipment

Description

AFE5016 AM Trainer Vocational Training Equipment Electrical Laboratory Equipment

1. Performance Indicators

Signal source indicators

u High frequency signal source:

Output frequency range: 400KHz ~ 45MHz (continuously adjustable) (minimum step 1KHZ)

Frequency stability: 10E-4

Output waveform: sine wave, harmonics≤-30dBc

Output amplitude: 1mVp-p ~ 1Vp-p (continuously adjustable)

Output impedance: 50Ω

u Low frequency signal source:

Output frequency range: 200Hz ~ 10KHz (continuously adjustable, square wave frequency up to 250KHz)

Frequency stability: 10E-4

Output waveform: sine wave, square wave, triangle wave

Output amplitude: 10mVp-p ~ 5Vp-p (continuously adjustable)

Output Impedance: 100Ω

2. Functional indicators

Each module of the experimental box has a good systematicness, and eight modules can be combined into five typical systems:

(1) Medium wave AM transmitter (525KHz～1605KHz)

(2) Superheterodyne AM Receiver (525KHz～1605KHz, IF 465KHz)

(3) Half-duplex FM radio (10MHz～15MHz, IF 4.5MHz, channel spacing 200KHz)

(4) Phase-locked frequency synthesizer (frequency step 40KHz ~ 4MHz variable)

(5) Superheterodyne FM radio (88MHz～108MHz, IF 10.7MHz)

3. Module Introduction

Frequency meter module: It is mainly used for frequency measurement in the experiment. 8 digital tubes are used to display the frequency count value, and the unit indicator light is used to indicate the current value unit.

Signal source module: Provides two signal sources of high frequency and low frequency, the output amplitude of the signal source is continuously adjustable, and the internal modulation function is attached

Small-signal frequency selective amplifier module: including single-tuned amplifier circuit, capacitively coupled double-tuned amplifier circuit, integrated frequency-selective amplifier circuit, automatic gain control circuit (AGC) and other four circuits

Sine wave oscillation and VCO module: including LC oscillation circuit, quartz crystal oscillation circuit, voltage-controlled LC oscillation circuit, varactor diode frequency modulation circuit, etc.

Amplitude modulation and demodulation module: including analog multiplier amplitude modulation (AM, DSB, SSB) circuit, diode peak envelope detection circuit, triode small signal envelope detection circuit, analog multiplier synchronous detection circuit and other four circuits

FM frequency discrimination module: It includes three circuits, such as quadrature frequency discrimination (product phase frequency discrimination) circuit, phase-locked frequency discrimination circuit, and basic phase-locked loop.

Mixing and frequency conversion module: including diode double-balanced mixing circuit, analog multiplier mixing circuit

High-frequency power amplifier module: including nonlinear class C power amplifier circuit, linear broadband power amplifier circuit, integrated linear broadband power amplifier circuit, collector amplitude modulation circuit and other four circuits

Radio module: including triode frequency conversion, AM radio, FM radio

Comprehensive experimental module: It includes four kinds of circuits, including microphone and music amplifier circuit, audio amplifier circuit, antenna and half-duplex circuit, frequency divider circuit, etc.

4. Experiment content

Experiment 1 Small-signal tuning (single, double tuning) amplifier experiment

Experiment 2 Integrated frequency selective amplifier experiment

Experiment 3 Diode double-balanced mixer experiment

Experiment 4 Analog Multiplier Mixing Experiment

Experiment 5 Three-point sine wave oscillator (LC, crystal) experiment

Experiment 6 Crystal Oscillator and Voltage Controlled Oscillator Experiment

Experiment 7 Nonlinear Class C Power Amplifier Experiment

Experiment 8 Linear Broadband Power Amplifier Experiment

Experiment 9 Collector Amplitude Modulation Experiment

Experiment 10 Analog Multiplier Amplitude Modulation (AM, DSB, SSB) Experiment

Experiment 11 Envelope Detection and Synchronous Detection Experiment

Experiment 12 Varactor diode frequency modulation experiment

Experiment 13 Quadrature frequency discrimination and phase-locked frequency discrimination experiment

Experiment 14 Simulate phase-locked loop experiment

Experiment 15 Automatic Gain Control (AGC) Experiment

Experiment 16 MW AM transmitter assembly and debugging experiment

Experiment 17 Superheterodyne AM Receiver Assembly and Debugging Experiment

Experiment 18 Phase-locked frequency synthesizer assembly and debugging experiment

Experiment 19 Half-duplex FM wireless walkie-talkie assembly and debugging

Experiment 20 Superheterodyne FM Radio System Experiment