🔈 Passive Buzzer – Sound Module 🔈
The passive buzzer requires an external oscillating signal (such as PWM) to produce sound. Unlike active buzzers, it won’t emit any tone when powered directly, making it ideal for applications where tone frequency and pattern need to be controlled programmatically. Commonly used in musical tone generation and programmable alert systems.
- ✅ Specifications:
- Type: Passive Buzzer
- Operating Voltage: 3V – 12V
- Current Draw: 5 – 20mA
- Input Signal Frequency: 1kHz – 5kHz (adjustable tone)
- Terminals: 2 pins (Signal + and -)
- Mounting Type: Through-Hole (THT)
- Diameter: Approx. 9 – 12mm
🔹 Key Features:
✔ Emits sound only when driven by PWM
✔ Programmable tone frequency and duration
✔ Compact and easy to mount on PCBs
✔ Ideal for embedded systems and learning kits
✔ Low power consumption and durable design
📌 Common Applications:
- Programmable alert systems
- Arduino tone and sound projects
- Sound effects generation
- Musical buzzer applications
- Training and prototyping tools
🔹 Approximate Weight: 1.2g
