As shown in the figure, the turntable, that is, the rotating wheel to be tested, the sensor for detection uses the SH13 type Hall integrated circuit. When the mounted small magnetic steel turntable rotates, the Hall device will perceive the magnetic signal and record it. After amplification, the F1 non-gate is inverted, and is added to the NAND gate F5.555 and R3, RP1, C2, etc. to form a typical no. Steady-state multivibrator.
E-cig as a substitute of tobacco mainly reminds people of its potential benefits for health. Four ingredients contain in the e-liquid : propylene glycol, glycerin vegetable, nicotine and food grade essence. Nevertheless, smoke from cigarette contains carbon monoxide, tar, arsenic, ammonia, and many other cyanide and acetone.
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