New simple 555 integrated digital tachometer circuit
Source: InternetPublisher:qoistoochee128 Updated: 2020/03/11
As shown in the figure, the turntable is the rotating wheel to be tested. The sensor used for detection adopts SH13 Hall integrated circuit. When the installed small magnetic steel turntable rotates, the Hall device will sense the magnetic signal and record it. After amplification, the F1 NOT gate inverts the phase, and is added to the NAND gate F5.555 and R3, RP1, C2, etc. to form a typical NAND gate. Steady state multivibrator.
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