Sound Sensing Control Switch Module Applause Voice Sound Activated 5v Led Switch Kit Circuit Electronics Pcb for Arduino
Sound Sensing Control Switch Module Applause Voice Sound Activated 5v Led Switch Kit Circuit Electronics Pcb for Arduino
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$0.99 USD
ราคาปกติ
$1.48 USD
ราคาโปรโมชัน
$0.99 USD
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ต่อ
ไม่สามารถโหลดความพร้อมในการรับสินค้าด้วยตนเองได้
Hign-concerned Chemical : None
Package : SMD
1
Operating Temperature : 1
Dissipation Power : 1
Supply Voltage : 1
Application : 1
Condition : New
Type : Module
HUISHENGYUFA
Specification
This product is actually delivered in pieces,which need to be welded and assembled by the buyer Parameters: Kit name: Clapper switch kit Operating voltage: 4.5-5.5V PCB size: 48.9*26.8mm Kit function: clap a hand,LED light,then clap off,and so on cycle Features: high sensitivity,about 4 meters clapping can be controlled Working principle: Q1 and Q2 constitute a two-stage audio amplifier circuit. The audio signal received by MK1 is coupled to the base of Q1 through C1,and directly fed to the base of Q2 from the collector after amplification. A negative square wave is obtained at the collector of Q2,which is used to trigger the bistable circuit. R1 and C1 limit the frequency response of the circuit to about 3kHz,which is a high sensitivity range. When power is switched on,the bistable circuit is in Q4 cut-off state,Q3 saturated,D3 not bright. When MK1 receives the control signal,a negative wave is output after two-stage amplification. After differential processing,the negative tip pulse is added to the base of Q3 through D1,making the circuit flip rapidly and D3 is lit up. When MK1 receives the control signal again,the circuit reverses again and D3 goes out. Note: In the electret MIC,one foot is connected with the shell is the negative pole,the luminous diode and the electrolytic capacitor long foot is the positive pole (long positive short negative),the transistor is installed in the direction of the real object,and there is no polarity between the resistor and the ceramic capacitor.
ดูรายละเอียดทั้งหมด
Package : SMD
1
Operating Temperature : 1
Dissipation Power : 1
Supply Voltage : 1
Application : 1
Condition : New
Type : Module
HUISHENGYUFA
Specification
This product is actually delivered in pieces,which need to be welded and assembled by the buyer Parameters: Kit name: Clapper switch kit Operating voltage: 4.5-5.5V PCB size: 48.9*26.8mm Kit function: clap a hand,LED light,then clap off,and so on cycle Features: high sensitivity,about 4 meters clapping can be controlled Working principle: Q1 and Q2 constitute a two-stage audio amplifier circuit. The audio signal received by MK1 is coupled to the base of Q1 through C1,and directly fed to the base of Q2 from the collector after amplification. A negative square wave is obtained at the collector of Q2,which is used to trigger the bistable circuit. R1 and C1 limit the frequency response of the circuit to about 3kHz,which is a high sensitivity range. When power is switched on,the bistable circuit is in Q4 cut-off state,Q3 saturated,D3 not bright. When MK1 receives the control signal,a negative wave is output after two-stage amplification. After differential processing,the negative tip pulse is added to the base of Q3 through D1,making the circuit flip rapidly and D3 is lit up. When MK1 receives the control signal again,the circuit reverses again and D3 goes out. Note: In the electret MIC,one foot is connected with the shell is the negative pole,the luminous diode and the electrolytic capacitor long foot is the positive pole (long positive short negative),the transistor is installed in the direction of the real object,and there is no polarity between the resistor and the ceramic capacitor.
