Sub-ultrasonic fan speed regulating controller circuit

Published:2011/9/13 8:36:00 Author:nelly | Keyword: Sub-ultrasonic, fan, speed regulating, controller | From:SeekIC

Sub-ultrasonic fan speed regulating controller can control the switch and speed of the fan, and it also can control the other appliances. The emitting end applies the sub-ultrasonic emitter, which is the main feature of this device. It also has no limitation about direction, and it is durable and do not need power source. The sub-ultrasonic received by the piezoelectric buzzer is amplified by V1, frequency selected by L, C4, and then amplified by V2m. it outputs pulse. You can mold the emitter when operating. The collector V2 will output a positive pulse triggering signal which is counted by the decimalism counter CD4017. It applies the Q1, Q2, Q3 gears of CD4017.



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