This circuit makes use of a 741 single source operational amplifier to measure resistors on a linear scale. The circuit may use as an indicator a common multimeter on a low current range.
Found in a 1969 documentation on neon lamps, it actually takes advantage of the durability of the neon...
This filter is intended for 60 Hz noise suppression in amplifiers. We found it in American...
This circuit was obtained in an American publication of 1989, but the components are current. The...