As shown in the figure, the circuit consists of two 555 and some RC components. ICl and RP1, Rl, and Cl form an astable multivibrator with an oscillation frequency of about 5-10 Hz, which can be changed by adjusting RPl. IC2 and RP2, R2, C2 oscillator frequency between 1~10kHz, can adjust RP2 to change frequency, but IC2 is a controllable voltage oscillator, its control terminal 5 is controlled by triangular voltage wave, The triangular wave is obtained by integrating the lC1 output through the R4 and C3 integration circuits. The oscillation frequency of IC2 is changed with the control voltage, and various analog sounds are emitted, such as howling, howling of various birds, and the like.
Breaker Mcb,Mcb Circuit Breaker,32A Circuit Breaker,Miniature Circuit Breaker
ZHEJIANG QIANNA ELECTRIC CO.,LTD , https://www.traner-elec.com