This high input impedance circuit was found in American documentation from the 1980s. The power supply must be symmetrical. The circuit applies to modern operational.
We found this circuit in the Radio Electronics magazine of February 1993. The main integrated...
Found in old American documentation, this circuit that can be used as a shield, activates two...
This circuit is more sensitive than the previous one (CB4118E) for using a full wave detector. The...