This circuit triggers a warning if there is a need to interrupt a process. The circuit has a 1 second delay. The circuit is from old American documentation.
This circuit was found in documentation from 1977. Its purpose is to diode-switch the frequency of a VFO....
This circuit is from a 1974 Ferranti transistor manual. The circuit is analog, and the components used...
Found in a 90s Popular Electronics, this circuit generates high voltage for radiation detecting...