Based on an OTA LM3600 operational amplifier, this circuit was found in the July 1988 issue of Radio Electronics magazine. The range is 6 Hz to 6 kHz and can be changed.
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...