The presented circuit measures currents and voltages with precision that depends on the tolerance of the resistors used. The instrument is a microammeter and more scales can be added.
This circuit is from an April 2000 Poptronics. The magazine no longer exists, but the circuit can...
This circuit, with output of 1.5 A, was found in a magazine 73 of the 90s. The integrated circuit is from...
This circuit, well known, since it is already present in other points of this website, is from an...