This 300 Hz to 3.4 kHz filter was found in the May 1989 Radio Electronics magazine. The circuit requires a symmetrical power supply.
This circuit produces a clef sound when a pulse is applied to its input. The damping effect is...
This circuit was obtained from Linear Technology's own component manual of the 1990s. The circuit...
This circuit was suggested by Motorola's 1993 Linear Interface ICs. Equivalent operational amplifiers...