This circuit was found in the March 1984 issue of Radio Electronics magazine. The sensor is a transistor. The module is a common type at the time.
The circuit of the figure serves the same purpose as the previous one (CB5057E), but has a...
In the figure below we have a typical circuit for applying a current sensor that can be used in...
The figure shows a way to apply gain control to the LM3600 OTA. The circuit is from a Radio...