From an audio signal, this circuit gets two signals of the same amplitude and opposite phases. This setting is widely used in bridge amplifiers (BTL). Transistors may be commonly used as BC series.
The circuit shown in the figure can be used to detect vibrations or to provide amplified acoustic...
Found in a 90’s Popular Electronics, this circuit applies to almost any operational amplifier. With...
We found this circuit in an old American documentation. The table gives the values of the...