This different circuit was patented and described in the Radio Electronics magazine of March 1958. In that section it used to present different configurations that received patents.
This circuit was found in a 2005 Linear Technology manual. It senses the two-way current,...
This circuit was found in an Electronics Now from the 90's. See the previous article for the...
This is the basic configuration of a monostable TTL with the 74121. The trip is done with an NC...