This crowbar circuit for alternating current causes a quick fuse to blow when the load current exceeds a certain value. The circuit is from an American 80's documentation.
EDN magazine in a 90's issue published this TTL technology debouncer flip flop circuit, in this...
This circuit is from Radio Shack documentation from 1977. It aims to demonstrate the principle of...
We found this circuit in a 1991 publication. It indicates when an analog phone line is busy by...