Hi all, as the result of a dare, I am trying to build a shooting Timer. ( a timer that responds to the sound of a firearm being fired and records the times thereof).
The timing is done by an ATMEL micro. the Start signal (from the Atmel) is a .5sec pulse. I have been using this to switch on a transitor to connect the 9V battery directy to the Piezo buzzer. this works fine except the volume/db of the buzzer is far to low. the Buzzer is rated 85Db with a supply voltage of 24V, another problem is that a buzzer of less than .25 Sec is too quick can any one assist in pointing me in the right direction re the following: a) Will a voltage doubler circuit (diode/capacitor network) work in this instance? b) must this "increased voltage" be stored in a capacitor before being able to be used ? c) if so, how do i connect it up to "release" the stored voltage - similiar to flash trigger , connecting to ground? d) given a 9v supply and a 5v trigger, could someone supply me a rough schematic ? e) the circuits i have been looking at (via google) typically use a 555 as an oscilator but they produce 200-300Volts! am i on the right track here? any Response is appreciated