This high impedance step suggested by an English publication can operate up to 1 MHz with 1 V rms output. Input impedance is 1 M ohm.
This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger...
This noise generator uses the thermal noise of a common diode junction. The circuit is from an...
This configuration, already found in other articles in this section and on this site, was obtained...