This circuit uses a 555 (according to the diagram) to generate 50 ms tone bursts at a frequency of 1.5 kHz. The circuit is from an 80's Electronic Design.
August 2016 - It can be obtained from Mouser Electronics the new pressure transducer M5600 from TE...
This circuit is from the American magazine that no longer exists Science & Electronics,...
This circuit was obtained from Signetics documentation from the 1980s. The circuit can be...