This circuit was found in a 1970 IEEE publication. The circuit functions as a voltage controlled variable resistor and can be used with audio signals. Transistors admit current equivalents.
We found this circuit in the November 1992 issue of Radio Electronics magazine. The circuit has...
We found this filter in a documentation for radio amateurs from 1974. The transistors could be the...
Texas Instruments TMS320F28069 Piccolo Microcontrollers provide the power of the C28x™ core and...