This circuit was found in an Experimenters Handbook of the 1990s. The purpose of this circuit is to keep constant the audio signal level of a system, increasing the lower signals.
We found this circuit in an old American publication. It can be mounted with TIC106 type SCRs and...
This simple circuit has good gain and can be implemented with any general-purpose transistor. The...
This circuit was obtained from an Application Note from Linear Technology that manufactures the used...