This sophisticated moving bar indicator circuit with the LM3915 is from a Radio Electronics magazine from May 1985. The two-channel circuit includes the power supply.
July 2017 - The Texas Instruments TAS5782M Closed Feedback- Class D Amplfier Evaluation Module can now...
This circuit can be controlled by pin 1 through the output of a microcontroller functioning as a...
Found in a documentation for radio amateurs from the 90s, this circuit is suitable for RF...