This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.
When a small air current reaches the piezoelectric sensor, a small audio signal is generated and...
This circuit was found on an application note from Linear Technology of the 1990s. The source must...
This circuit is used as a magnetic field sensor and is based on a Texas Instruments HaII Effect...