This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used as a basis for modern designs with equivalent transistors.
Found in a Popular Electronics from 1992, this circuit uses a PLL567 in an audio meter bridge that...
This circuit was found in an old European documentation. When R2 is cut off the circuit triggers...
This circuit for the positive front of a rectangular signal was found in an old documentation, but applies...