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Siren Sound Generator COB

Siren Sound Generator COB

$ 0.52

Availability: 52 in stock
  • All returns accepted: Returns Accepted
  • Condition: New
  • Return shipping will be paid by: Seller
  • Item must be returned within: 30 Days
  • Refund will be given as: Money back or replacement (buyer's choice)
  • Brand: Unbranded
  • MPN: Does not Apply

    Description

    Description:
    This 18mm x 15mm Chip-on-Board PCB contains a standard alarm siren as used in personal alarms, drivers for piezo horn sirens, cars & toys. It has a wide power supply of between 2V to 5V. (However, one factory does use it with a 9V battery in a personal alarm with no apparent failures.) It has automatic power down & a standby current is less than 2 uA.
    The chip will tolerate a wide range of component values. A suggested circuit is given below. R1, The oscillator resistor was 47K; R2 3K3 and R3 5K6. With a good choke coil or transformer, and a good piezo resonating chamber sound outputs of over 105dB at 1 meter are obtainable.
    This is the first time these die form IC's have been generally available to the hobbyist market.
    Specifications:
    Siren sound generator PCB size: 18mm x 15mm
    2V to 5V operation
    Standby current of < 2uA
    Contains a standard siren driver
    The pinouts are as follows:
    Pin Position        Pin Function
    --------------            ----------------
    1                       VDD Positive 2 to 6V
    2                       Oscillator Resistor
    3                       Oscillator Resistor
    4                       Not connected
    5                       Push button trigger to Ground
    6                       Ground
    7                       Buzzer Output