Hi I would like to build a simple buzzer circuit which beeps for some 5sec then die off when AC power comes on. I know circuit is kinda simple but i cant seem to figure out :frowning: here is wat I came up with... AC to DC rectification (say 6v) then a capacitor in series with resistor in series …

Buzzer Circuit

system November 4, 2010, 2:11am 5

This circuit will work? Its Buzzer which works at around 4V.
http://www.mediafire.com/i/?3gb6so3p8ck90pr
Shouldn't I add something to discharge the cap???

Topic		Replies	Views
Newbie needs help with simple project. Project Guidance	14	3066	May 5, 2021
Need help with finding a buzzer / audio device Audio	2	1373	May 6, 2021
Filter out DC component General Electronics	13	5440	May 6, 2021
Driving a loud buzzer... Project Guidance	12	3614	May 5, 2021
boosting my smoke alarm Project Guidance	5	643	May 5, 2021