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.
An interesting basic circuit for projects is shown in the figure. It consists of a digital...
This circuit provides a signal when dialing occurs. The circuit is powered by the telephone line...
This circuit, for a bulb of 6 V up to 200 mA, was found in an old Argentine publication of the...