Knowledge of the use of laboratory oscillators

The role of the oscillator

The oscillator is simply a frequency source and is typically used in phase-locked loops. In detail, it is a device that can convert DC power into AC power without external signal excitation. Generally divided into positive feedback and negative resistance type. The so-called "oscillation", its meaning implies communication, the oscillator contains a process and function that never oscillates to oscillate. Such a device can be converted from DC power to AC power, and such a device can be called an "oscillator."
The role of the oscillator is to convert the direct current to alternating current. It has many uses: to generate electromagnetic waves in radio broadcast and communication equipment; to generate clock signals in microcomputers; to generate high-frequency alternating currents in voltage-stabilizing circuits.

Use of the oscillator

1. Load the test bottle and keep it balanced. If it is a dual-function model, set the oscillation mode;
2, turn on the power, set the timing according to the surface scale of the machine, if you need to work for a long time, adjust the timer to the "normally open" position;
3. Turn on the power switch and set the constant temperature:
(1) Put the control small switch in the “Setting” section. At this time, the temperature displayed on the display is the set temperature. Adjust the knob and set it to the temperature you need to work. (The operating temperature you set should be higher than Ambient temperature, when the machine starts to heat up, the yellow indicator light is on, otherwise the machine does not work);
(2) Put the small switch of the control part on the “measurement” end. At this time, the temperature displayed on the display screen is the actual temperature of the air in the test chamber. As the temperature inside the box changes, the displayed number will change accordingly.
(3) When heated to the temperature you need, the heating will stop automatically and the green indicator light will be on; when the heat in the test chamber is dissipated below the temperature you set, a new round of heating will start again;
4. Turn on the oscillation device:
(1) Open the oscillation switch on the control panel and the indicator light is on;
(2) Adjust the oscillation speed knob to the desired oscillation frequency;
5. After the work is finished, cut off the power supply, set the speed control knob and the temperature control knob to the lowest point;
6. Clean the machine and keep it clean.

Oscillator use precautions

1. The oscillator should be placed on a relatively firm work surface, the environment should be clean and tidy, and the ventilation is good;
2. The power socket provided by the user should have good grounding measures;
3. It is strictly forbidden to move the oscillator during normal operation;
4. It is strictly forbidden to hit the oscillator;
5. It is strictly forbidden for children to approach the oscillator to prevent accidents;
6. Make sure the power supply is cut off before replacing the fuse;
7. Please clean the oscillator after use, and do not leave any water droplets or dirt.