The circuit shown was found in Intersil documentation from the 90s. The formula allows to calculate the voltage obtained as a function of the values of the resistors.
This circuit can measure frequencies up to just over 1 MHz and uses CMOS technology. The circuit is...
This circuit, found in 2002 documentation, generates a strong audio tone when the light in the...
The integrated circuit used in this 80's application is not common today. However, modern...