Found in the March 1992 Radio Electronics magazine, this circuit has two supply voltages. The maximum input voltage is 14 V.
The operational amplifier used in this application is uncommon today. This Raytheon circuit can be...
The operational amplifier used on this Raytheon circuit is similar to the 741. The circuit is from...
The circuit presented was found in a 2009 publication, and is based on the TDA1515 integrated...