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.
The amplifier gain shown in the figure is given by R1. The circuit is valid for other photodiodes and is...
This circuit is from the 1977 RCA CMOS Integrated Circuit from the RCA of 1977. The power supply of...
This circuit is a driver for R-2R network of AD converters. We found it in manufacturer...