We found this configuration in a 1974 publication. Transistors can be replaced with equivalents such as 2N2222. The circuit has a dynamic range of 60 dB.
We found this circuit in an English documentation from 1995. With it it is possible to measure a...
The circuit shown below was obtained from an Italian magazine Sperimentare from 1977. All...
The integrated circuit used in this circuit is not common today, because it is a configuration obtained in...