We found this circuit in the September 1995 issue of Electronics Now magazine. The circuit has 6 scales for resistance measurements and uses an analog indicator from 50 uA to 1 mA.
This interesting constant current source circuit was found in the September 1989 issue of Radio...
We find this circuit in a 1970 publication. Transistors can be replaced by current equivalents and LDR is...
Employing a unijunction and a triac of the era, this 1964 Electronic Design circuit uses a diac to...