Using a 4046 PLL, which is not very common nowadays, this circuit was found in the October 1994 issue of Electronics Now magazine. The power is provided by the transistor and is small in this case.
This simple version of a function generator with the XR2206 was found in the May 1977 issue of...
We found this circuit in Radio Electronics magazine from June 1960. The four-transistor circuit is...
This circuit is one of many that can be found in this section using the 555. This circuit was...