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.
Rumble is a low frequency noise between 25 and 200 Hz that appears in old turntables, affecting...
The integrated circuit 4136 consists of operational amplifiers of type 741 in the same enclosure and...
This circuit was obtained in an Argentine publication from 1973. The original version uses...