This configuration found in GE documentation from the 90s, can also be seen elsewhere in this section. It can operate with voltages from 1 to 6 V and consumes only 6 mW at 1.5 V.
This simple alarm circuit was found in a 1998 documentation. When the sensors are activated, the...
This circuit was found in an old American documentation. The integrated circuit used is uncommon...
Found in a 90s Electronic Design, this suggestion to have a higher voltage in a fixed regulator...