This circuit was obtained from an American documentation from 1976. The circuit has a dynamic range of 100 kHz. FETs may be replaced by current equivalents.
This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used...
In the figure we have the way to make the connection of voltage regulators in series to obtain a...
This circuit was found in a 90s Popular Electronics. The sensor can be any phototransistor. ...