This circuit has a full scale of 1 kW, being indicated for the 110 V power grid. Adaptations can be made for operation in other networks.
This circuit shows how to get 5 V under low current from an operating amplifier 741. I got this...
This circuit uses two JFET such as the BF244 or BF245 and has an excellent gain with small...
This circuit was found in the March 1995 issue of Electronics Now magazine. The circuit requires a...