How do you deliver constant power when the load impedance isn't constant? That problem arises, for example, in trying to maintain a warm LCD display on an outdoor gas pump in cold climates. As the ...

Constant voltage regulation and constant current regulation are well known and familiar, but constant power regulation is a bit less common. The concept is demonstrated in the following two sketches ...

The circuits in Figures 1 and 2 show how you can emulate a constant-power load for cases when a simple load resistor is unacceptable. For example, using a simple resistor as a load is unacceptable for ...

Constant current limiting circuits are commonplace, but sometimes a constant power limiting function is desired instead. This can be because downstream loads, like DC/DC converters, present a constant ...

Actuators and sensor systems sometimes include a resistive load that requires a controllable, constant-power drive, regardless of the load's resistance value. If that value changes with operating ...