This circuit is from a 70s Burr Brown documentation. The components are from the time and the waveforms given next to the diagram.
Using a 741 op-amp this circuit high-pass to 10 kHz was found in the February 1995 issue of...
This control for a heating element was found in an old documentation. The current in the element...
This circuit was obtained from an old Signalite documentation. Neon lamps are special types of the...