The heart of the device that [Kerry] designed is based on 6 power MOSFETs, a few operational amplifiers ... the latter allows a constant power load mode (as power = current * voltage).

Typically, pulse width modulated amplifiers are used to emulate linear constant voltage amplifiers or linear constant current amplifiers. PWM amplifier chips consume less power than these linear ...

The Dytran model 4110C is a line –operated constant current power unit designed to power IEPE sensors and in –line charge amplifiers. This unit provides 2 to 20 ...