This third-order filter was found in a 1975 publication. The circuit must be powered by a symmetrical source. The components can be changed for operation on other frequencies.
This circuit can control the power from 0 to 70% of the maximum power on a load. The circuit was...
This circuit detects when a signal reaches its peak value. The source must be symmetrical and...
This circuit, from 2001 documentation, uses a phototransistor as a sensor and an operational...