We found this circuit for musical instruments in the March 1992 Radio Electronics magazine. The circuit has outputs according to the desired scale from a crystal oscillator at the indicated frequency.
This interesting automotive alarm was found in an English publication from the 1980s. The circuit...
This modem circuit using a 4046 PLL was found in the October 1994 issue of Electronics Now. The...
This traditional timer setting can provide time intervals up to a few tens of minutes. The...