This circuit generates a sinusoidal signal with only -80 dB THD. The circuit was found in a 90's EDN. The frequency is 25 kHz and the components used are from that time.
This circuit was found in an article in Radio Electronics magazine from May 1975. The circuit has...
We found this circuit in the February 1987 issue of Radio Electronics magazine. It is based on an...
This interesting circuit, which can be used as an alarm, was found in a 1997 documentation. It...