Electronics123.com, Inc. Siren Sound Generator COB

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. The pinouts is 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 (Click here for suggested drive circuit) (CG06) Download data sheet here: http://electronics123.net/amazon/datasheet/sg11-circuit.jpg