The TAA865 integrated circuit used in this 1986 project is no longer common today. The circuit is a documentation of the time and the time is given by RC that has indicated the maximum values.
This circuit was found in a 1981 documentation. The circuit produces intermittent beeps serving two...
This circuit for the ionization chamber was found in an Electronics Now from the 90's. The circuit...
This circuit is based on a double operational amplifier of type NE5512 and is suggested by Philips...