i am using an inductive amplifier to identify when tones between 500hz and 3000hz are present on an audio cable. i cant make contact with the cable hence the use of an inductive amplifer.
On detecting the presence of a tone between 500hz and 3000hz i need to provide an output suitable for a device with 1.5v - 4.5v nominal voltage range and current 175mA, its a little motor.
hope this explains abit more about the project, thanks for your replys
OK, a bandpass filter then, or a highpass filter (at 500Hz) followed by a lowpass one (at 3000hz). Bear in mind filters don't instantly chop everything off, they roll the response off at so many dB's per octave.
OK, a bandpass filter then, or a highpass filter (at 500Hz) followed by a lowpass one (at 3000hz). Bear in mind filters don't instantly chop everything off, they roll the response off at so many dB's per octave.
im at the level of pickin up a soldering iron and thats about it, i wouldn't know where to start, specifying components etc... any pointers for circuit diagrams?? apart from the filters what would i need to provide an 'ouput' when a tone between 500hz and 3000hz is 'heard'
im at the level of pickin up a soldering iron and thats about it, i wouldn't know where to start, specifying components etc... any pointers for circuit diagrams??