This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is based on the 566 PLL and generates signals up to about 200 kHz.
This 1/2 hertz high selectivity filter was found in the December 1990 issue of Radio Electronics...
This circuit was found in the October 1994 issue of Electronics Now magazine. The 40446 IC is a...
This is one of many Morse code audio oscillators that can be found in this section. The circuit...