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.
The circuit we use makes use of Linear Technology's LT3080 (www.linear.com) which consists of a...
This circuit, suggested by Philips Components, uses as a base a voltage comparator of the type...
This circuit for the 3 to 6 MHz band was found in a 90s Popular Electronics. The components of the...