This circuit was found in a 1980s American documentation. The circuit is based on integrated CMOS 4001 that are common today. The load is a relay according to the power supply from 6 to 12 V.
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...