As shown in the figure is the radio automatic shutdown circuit. The circuit mainly uses the new power switching device TWH8778, which is easy to manufacture and requires no debugging. The shape of the TWH8778 and the function of each foot are shown in the figure. The 5th pin is the control terminal. When the voltage of the foot is turned on (about 1.6V), the electronic switch is closed, and the 1st and 2nd pins are turned on. When the touch of the touch switch between the BG1 and the power source is touched by hand, BG1 is turned on, and the voltage drop on R1 causes the TWH8778 to be closed, and the tape recorder operates normally due to the power-on. If the radio is playing, the audio signal is coupled to the base of BG3 via C3, turning BG2 on, BG2 has a base current, and is in a conducting state, and the voltage drop on R1 locks the switch of TWH8778. When there is no audio signal, both BG1 and BG2 are cut off, TWH8778 is disconnected due to the loss of voltage on pin 5, and the radio is automatically turned off.
·Basic precautions
Do not put expensive oil into low-quality cartridges to avoid wastage. Most pre-filled oil cartridges have the so-called 510 thread. The oil cartridge screws onto a rechargeable battery. Some of these batteries have buttons and some heat up automatically when you pump the oil. Some batteries have multiple temperature settings and some heat up to a preset temperature; these features need to be known in advance.
·Cleaning notes
Use a suitable cleaning tool to clean them, such as activated charcoal or dried tea leaves in a used pipe to absorb the oil. It is important not to use alcohol or other boiling water to clean the pipe, and to wait until it has cooled down completely before cleaning. Otherwise, the hot stem will come into contact with the watery liquid and cause the mouthpiece tenon to loosen, thus shortening the life of the 510 cartridges.
This is what you should be aware of when using 510 cartridges. At the same time, when using 510 cartridges, there are still some vaping tips, for example, when using them, be careful not to suck too hard, will not produce smoke. When you inhale too hard, the smoke is sucked directly into your mouth and not atomized by the atomizer, so gently inhaling is more powerful and gives you a better vaping experience.
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