This 800 Hz sinusoidal oscillator was found in a 1970s American documentation. The transistor supports a modern general-purpose equivalent. The frequency is given by the RC network that can be changed.
This filter was obtained from the Texas Instruments Linear Circuits Applications. It makes use of...
This circuit is from a 1980 publication. The circuit has high gain with weak signals and lower gain...
This circuit was originally suggested in a 1968 publication to generate a white mark (frame) on a...