This circuit is a four-quadrant multiplier using an LM3900. The circuit was found in the July 1988 Radio Electronics magazine.
The CA3020 integrated circuit was one of the first commercial types, sold in the 1960s. The...
This circuit generates a linear sawtooth signal with frequency that depends on the capacitor next...
This circuit has a maximum frequency of 10 kHz and a linearity better than 0.01%. The circuit is...