Results tagged #Tone Detector in Circuits
Homebuilt Hellschreibers
The circuitry for the tone detector, solenoid driver, and motor speed control (paper transport and spindle) is rather straightforward. A sol...
Tone detector
The detector circuit is made up a two-amplifier multiple feedback bandpass filter followed by an ac-to-dc detector section and a Schmitt Tri...
Tone detector / Sound Activated switch
The detector (below) is a bit more complex. It amplifies a microphone and sends the resulting signal to an NE567 tone decoder. The amplifie...