ĐIỆN tử VIỄN THÔNG DTVT2 nhom7 bai10 txt khotailieu

TEST AND REPAIR INSTRUMENTS Nhóm Nguyễn Bá Duy Đỗ Văn Sang Trần Minh Đức Dương Văn Hùng Nguyễn Khắc Ngân Vũ Văn Chinh Task 1: - Voltmeter - Ammeter - Ohmmeter - Multimeter - Osscilloscope - Logic probe Task 2: Logic probe is used to measure voltage levels and pulses in digital circuits, determning the logic level on pins of logic chips 2 Function generator is used to test and adjust variety of elecctronic equipment such as audio amplifier Oscilloscope is used to mesure fast moving signal, show how a signal varies with time or relative to another signal Multimeter can be used to mesure voltage, current, resistance, Task 4: Lamp circuit test Oscillocpe Logic probe Ammeter Oscilloscope Frequency Measurements Task 5: 10 Three Gun Focuses Beam Deflection Vertically Plates Electrostatic Deflection Phosphor Task 6: A mangetic field is set up in the speker coil making the coil vibrates The coil pushes and pulls the speaker cone causing sound waves to be produced A voltage is applied to a quartz crytal making the quartz crytal expands and contracts A voltage is applied to the Y- plates causing the electron beam to be deflected Current flows through the filament causing the heater to glows Task 7: 10 CDs player aerial Charger AF amplifier Noise filter modulator Tape head cleaner RF power amplifier Vibration sesnors X- ray machince