This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at the end of the timer, erasing the other. The timing can be increased by increasing C1.
This circuit controls loads powered by the power grid, remembering that it is a half wave...
This circuit was found in an old Electronic Design. It makes use of sidacs and operational not very...
In the figure we have the way to compensate an operational amplifier. The circuit is valid for...