Based on an OTA LM3600 operational amplifier, this circuit was found in the July 1988 issue of Radio Electronics magazine. The range is 6 Hz to 6 kHz and can be changed.
We found this circuit in an article in Radio Electronics magazine from November 1971. The circuit has...
This filter was obtained from Radio Electronics from the 80's. The configuration applies to any...
This receiver was obtained in a documentation from the 90's and is of the super-regenerative type....