5020/7525/8530/9650/1230/9032 patch buzzer active passive electromagnetic 3 v3. 6 v5

PRODUCT DESCRIPTION
Electromagnetic buzzer is composed of oscillator, electromagnetic coil, magnet, vibration diaphragm and shell, etc. After switching on the power supply, the audio signal current generated by the oscillator passes through the electromagnetic coil, so that the electromagnetic coil produces a magnetic field, and the vibration diaphragm vibrates periodically under the interaction between the electromagnetic coil and the magnet. Buzzers are represented by the letters "H "or "HA" in the circuit (older standards use "FM", "ZZG ", "LB", "JD ", etc.). Widely used in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers and other electronic products in the sound device.