This 1969 Mullar circuit appears elsewhere on this site. The circuit uses germanium diodes and the indicator is microammeter with zero in the center of the scale.
This circuit is from an old publication, from 1992, being indicated to test the old joysticks of...
This circuit simulates lightning using a small white lux type fluorescent lamp. The circuit is...
The frequency of this astable multivibrator depends not only on the capacitors, but also on the...