But from there he moves on to the juicy bits. He builds a transistor-based constant current driver, then adds voltage regulation for the circuit as seen in the schematic on the left.

Maintaining a constant current in Q1 requires that it be thermally coupled to Q2, since Q2 will dissipate most of the power in the circuit. The easiest way to do this is make Q1 the same transistor as ...

Current monitoring has become simpler because of the availability of dedicated integrated circuits. Current monitoring integrated circuits are readily available and under most circumstances do an ...

This circuit uses a few standard discrete components to provide a user-settable current-limit function with closed-loop performance. In addition, the limiter function can be turned on and off via ...

A major current law has been rewritten thanks to the three-port transistor laser. Data the transistor laser generated did not fit neatly within established circuit laws governing electrical ...

This quantum electronics component switches electrical current by controlled repositioning of a single atom, now also in the solid state in a gel electrolyte.

Transistors based on graphene ribbons could result in much faster, more efficient computers and other devices. Researchers use a magnetic field to control current flow.

This dummy-load circuit, which is useful for testing power supplies and power amplifiers, is based on the Maxim MAX6006 voltage-reference IC and MAX480 operational amplifier.