This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
Found in an old Elektor, this circuit uses two 7-segment displays to indicate the volume of an...
L1 and C1 determine the frequency of this Colpitts Oscillator. Refer to our section Mathematics...
This circuit is from Mullard 1969 documentation. The circuit operates at a relatively high supply...