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.
We found this circuit in the Linear Applications Handbook of the National Semiconductor of 1994....
This circuit for antiparallel control of thyristors was found in a Philips publication from 1967....
The purpose of this circuit found in a 1995 magazine is to monitor an alarm via telephone. When we...