This alarm circuit has a trigger delay system. The circuit was found in a Popular Electronics of the 90s. The components are common.
The Texas Instruments TPS7A92 integrated circuit consists of a low-voltage (LDO) linear voltage...
This circuit inverts the signal of any logic using a general purpose PNP transistor. The supply...
This circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other...