This circuit can be used as an answering password system in a store, office, or other location. The circuit is from Intersil using components of the time. The circuit is from the 80's.
This circuit was obtained from a Popular Electronics of the 90s. The SCR is of any type and the...
June 2016 – Mouser Electronics already have in stock the TPS56C215 converter from Texas...
We found this circuit in an old American documentation. The circuit is simple by making use of an...