This input circuit for an oscilloscope was found in Radio Electronics from the 90s. The operating circuit is from that time, and a modern equivalent can be tried out.
The presence of C1 in this circuit from a 1977 publication, reduces surges. The circuit is for 30 V...
This circuit was obtained in a Popular Electronics magazine in March 1991. The circuit generates...
The circuit shown has the advantage over the reductions with resistors to have a much higher...