BCtyN0wD7y

555 Sounder_Electronic Information Engineering_Shen Liqiao

Overview

The frequency of the multivibrator is calculated as f=1.43/0.1*10^(-6)*(R1+2*R2). When R2 is at different frequencies, replace it with R2 to R9. The eight frequencies corresponding to the eight frequencies can be calculated. A sound.
The selected components are all currently available and available in Lichuang Mall. After the teacher’s explanation in the morning, I replaced some components, but the basic idea of the circuit has not changed.

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Update:2025-06-19 01:24:05

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