hi,
i have just gone out and got a cable tester from maplins, works like an inductive amplifier, detecting a tone present in the cable. Im detecting tones from 500hz to 3000hz.
I want to take to audio speaker output of this tester and put it through some kind of filter, when a tone between 500hz and 3000hz is detected i want to light an led, the unit is powered by a pp3 battery.
Any suggestions
thanks
freddy
i have just gone out and got a cable tester from maplins, works like an inductive amplifier, detecting a tone present in the cable. Im detecting tones from 500hz to 3000hz.
I want to take to audio speaker output of this tester and put it through some kind of filter, when a tone between 500hz and 3000hz is detected i want to light an led, the unit is powered by a pp3 battery.
Any suggestions
thanks
freddy