This is the analog part of the previous circuit with the pressure sensor for the altimeter. The circuit is from a Radio Electronics from October 1990.
Found in Popular Electronics, this '90s circuit generates harmonic-rich signals for testing audio...
Another dimmer circuit. This dimmer for incandescent lamps was found in the July 1970 issue of...
This version of the preamplifier is one of many that the reader will find on this website using the...