Fast log generator (CB7595E)

We found this circuit in a 90s Popular Electronics. The operational amplifier can be replaced by current equivalents.

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Sinusoidal Generator (CB14356E)
The circuit shown is from the 1994 Linear Applications Handbook by National Semiconductor. Some of...
1-Transistor MW Radio (CB18839E)
This simple transistorized radio for listening on a crystal phone was found in a Japanese...
MP23AB01DH Analog and Digital Audio MEMs Microphone - STMicroelctronics
In the MEMs line of the ST available on Mouser Electronics we highlight the MP23AB01DH audio...