The expansion rate of this circuit is determined by R. The circuit can use any operational amplifier and the power supply must be symmetrical. Resistor R must be less than 10k.
Found in Popular Electronics from March 1957, this circuit is based on transistors from the time....
The voltage gain of this circuit found in the 1982 SGS Linear Integrated Circuits manual is 10...
This circuit, found in an English publication in 1982, has an inverted sequential effect, as the...