This stereo meter-indicator was found in the August 1971 issue of Radio Electronics magazine. The transistors are known types and BC548 equivalents can be used.
This circuit was found in an Electronics World of 1969. The circuit has a drain current of...
This circuit makes use of the Linear Technology LT6100. We find it in a 2005 company manual. The...
I found this circuit in an English publication from 1989. This configuration can be mounted with...