Hi all, this is my first post and hoping to get some advice from you knowledgeable people.
basically i have what is known as a bite alarm (for fishing). normally bite alarms beep as the fishing line passes over a wheel which usually has notches in it to allow some sort of optical switching making it go beep-beep-beep until the wheel stops.
however i have been given some particularly cheap alarms which quite often get stuck with the buzzer constantly on and i have to physically move the wheel to silence the buzzer.
I have discovered that this alarm uses a reed switch with magnets on the wheel, so if the magnet gets stuck next to the reed switch the buzzer sounds constantly.
I am hoping someone can advise me how to modify this circuit so that if the magnet does hold the reed switch closed the buzzer will only beep once.
This is the existing circuit
sorry for the bad drawing
Thanks in advance.
Doug
basically i have what is known as a bite alarm (for fishing). normally bite alarms beep as the fishing line passes over a wheel which usually has notches in it to allow some sort of optical switching making it go beep-beep-beep until the wheel stops.
however i have been given some particularly cheap alarms which quite often get stuck with the buzzer constantly on and i have to physically move the wheel to silence the buzzer.
I have discovered that this alarm uses a reed switch with magnets on the wheel, so if the magnet gets stuck next to the reed switch the buzzer sounds constantly.
I am hoping someone can advise me how to modify this circuit so that if the magnet does hold the reed switch closed the buzzer will only beep once.
This is the existing circuit
sorry for the bad drawing
Thanks in advance.
Doug