This circuit, with 1 A output, was found in a 1975 documentation. The transistors admit equivalents and the transformer has windings according to the voltages being worked.
This circuit, from an old Argentine publication, makes it possible to use a 1 mA full-scale...
We found this circuit in a 1997 documentation. It uses a common analog indicator, measuring...
The operational amplifier used in this application obtained in a technical documentation from the...