The circuit shown is from the November 1996 Electronics Now magazine. The basic circuit is in the previous 3 sections of this section. The circuit measures resistances up to 2M ohms.
The oscillator shown in the figure generates a 1 kHz tone that is reproduced on the speaker with...
In the figure we have the photo-conductive way of using a photocell to control a small motor with...
This circuit was found in the June 1991 issue of Radio Electronics magazine. The circuit uses two...