This repellent operates with frequencies from 30 to 45 kHz, serving for insects and rodents. The circuit is from 80s documentation. The transducer is a piezoelectric type.
This circuit is from old American documentation, using a regulator integrated circuit that is...
The purpose of this circuit is to pass an audio signal from one channel to another in a...
This circuit consists of an adapter that allows the reading of low currents at various scales. A...