Electronic Door Buzzer

When SI is depressed, an initial positive voltage is placed on C2 and the noninverting terminal of Ul. The circuit o
Electronic Door Buzzer - schematic

scillates at a low frequency. As C2 charges up through R3, a rapid increase in frequency of oscillation results, producing (at SPKR1) a rapidly rising pitched sound. This sound is easily recognized over ambient noise.

Recommended videos

  • Purpose of the Diode in Doorbell Circuits? Test circuit and Experiment!
    Duration: 13:18.
  • How to Make a Simple Door Alarm
    Duration: 6:58.
  • How to Make an IR Proximity Sensor | Touchless Door Bell
    Duration: 7:46.

Leave Comment

characters left:

New Circuits