R
RobZ
- Jan 1, 1970
- 0
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
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