The figure shows how to associate flip-flops in a shift register to obtain a lower frequency sinusoidal signal. The circuit is from a Radio Electronics from November 1976.
Texas Instruments' low power operational amplifiers OPAx196 can be found on Mouser Electronics....
This circuit operates with input voltages from 50 to 140 V providing an output of 12 V under...
This circuit mimics the sound of a siren when we turn the axis of the small DC motor. The...