We found this bridge circuit in Electronics Now magazine from September 1995. The instrument can be from 50 uA to 1 mA. The trimpot value depends on this instrument.
This circuit has an interesting application. If a device with the selector switch in the 110 V...
The basic idea of this circuit is to convert the indication of a magnetic sensor to an audio tone...
This circuit can control the power from 0 to 70% of the maximum power on a load. The circuit was...