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.
The circuit used is not common today, as the configuration is from 1994. The circuit is from the...
This circuit was found in old documentation from Analog Devices. The integrated circuit is from...
Suggested by General Electric in 1980s documentation, this circuit makes use of PUTs that are not...