A friend of mine who is quite deaf
has asked me modify his alarm clock to make it much much louder
Its a battery quartz Bell type but it just rattles instead of ringing
the bells are driven by a small electric motor and I was going to remove that and connect the output to drive a small piezo alarm sounder
however the output voltage is only 1.5volts
the alarm sounder has a built in 9volt battery and works as a make/brake door bell type circuit
so I have +and- 1.5 volt coming out of the clock
and +and – 9volt input on the sounder
I had intended to use a small relay on the clock to switch on the sounder but not enough volts to drive one.
Your help would be very much appreciated
has asked me modify his alarm clock to make it much much louder
Its a battery quartz Bell type but it just rattles instead of ringing
the bells are driven by a small electric motor and I was going to remove that and connect the output to drive a small piezo alarm sounder
however the output voltage is only 1.5volts
the alarm sounder has a built in 9volt battery and works as a make/brake door bell type circuit
so I have +and- 1.5 volt coming out of the clock
and +and – 9volt input on the sounder
I had intended to use a small relay on the clock to switch on the sounder but not enough volts to drive one.
Your help would be very much appreciated