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 sophisticated source is low voltage and low current. The circuit found in old documentation may have...
We found this circuit in a 1997 documentation. Its purpose is to fan an inverter for fluorescent lamp...
This isolated shield uses a common optical coupler that supports several equivalents. The resistor in...