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.
One 4018 is used to divide the frequency of a digital signal by ten as shown here. The maximum...
This circuit is from a Poptronics, American magazine of August 2000. The circuit can be assembled with...
The circuit presented is from an old magazine having been translated and published in a national...