This reinforcing stages from a 1960s documentation. No information is given about the transformer and the transistor admits equivalents.
This bistable circuit that drives a relay with a pushbutton was found in the March 1pp6 issue of...
We find this battery charger in a 90's Hands-On Electronics. The charging current is 2 A and when...
Found in an Electronic Design this circuit controls a headlamp by triggering a time determined by the...