Found in an Electronic Design from the 90s, this circuit makes use of integrated regulators of the time. These components must be provided with heat sinks.
The circuit presented is from a 2006 documentation. It can turn a set of lamps on or off when...
This second-order filter was found in a 1978 publication and can use common operational amplifiers like...
This simple tone control using two transistors was found in an Electronics Today International of the 90s....