The circuit shown in the figure can be designed with more modern operational amplifiers, as it is from 1994 documentation by National Semiconductor. The power supply must be symmetrical.
This circuit generates pulses whose duration determines the position of a remote-control servo. The...
This circuit uses a piezoelectric tweeter to emit a powerful continuous sound above the audible...
This circuit generates sinusoidal signals that depend on the input oscillator. The circuit is from...