This circuit is from an article that teaches how to assemble it in the magazine Electronics Now from July 1993. It uses a liquid crystal display module from the time with 3 and a half digits.
We found this amplifier in a publication of 1990, but it can be mounted today with some exchanged...
This low-power circuit was found in the March 1990 issue of Radio Electronics magazine. It...
This traditionally configured power supply provides +12, -12 V and 5 V voltages for operating and...