This resistance meter circuit was found in the February 1984 issue of Radio Electronics magazine. It is based on a digital module from that time. The power supply is 5 V.
This circuit uses a symmetrical power supply, and the motor is for the voltage indicated in the...
We found this circuit in an old documentation, but it is still current. General purpose...
The circuit exemplified in figure 8 is suggested by National Semiconductor and is based on an...