Home >
Optoelectronic Circuits >Optoelectronic Display Circuits > Simple electronic doorbell circuit
Simple electronic doorbell circuit
Source: InternetPublisher:失踪的猫 Keywords: Doorbell circuit electronic doorbell piezoelectric ceramics Updated: 2021/12/29
Shown is a simple electronic doorbell circuit , which mainly uses a piezoelectric ceramic sensor BH. The piezoelectric ceramic sensor
is connected to the base circuit of VT1. When it is vibrated by sound waves, it will generate a voltage signal , which will be amplified by VT1 and Vr2, and then drive
the audio circuit KD128. The music signal generated by KD128 drives the speaker to emit music sound through VT3.
Latest Optoelectronic Circuits Circuits
- Build a Bluetooth-controlled wireless scoreboard
- Audio level LED and digital dual display circuit
- Circuit diagram of game score display using 7-segment LED
- Design and production of rain control and light control timing controller based on P87LPC764
- Design and production of digital number answering machine
- Gas flameout alarm circuit
- Electronic rapid starter for fluorescent lamps
- Mains undervoltage and overvoltage alarm circuit 2
- Bedside lamp controller circuit
- Small current anti-theft alarm circuit
Popular Circuits
- Electronic video doorbell circuit
- Two-way flashing light string circuit with music
- Visual doorbell circuit
- One of the dual-tone electronic doorbell circuits
- Display music doorbell circuit
- Flash doorbell circuit
- Turntable music doorbell circuit
- Luminous doorbell circuit
- Electronic doorbell that can speak and sing
- Electronic doorbell circuit with two trigger functions
京公网安备 11010802033920号