Current measurement device, e.g. for measurement of electric motor loading, has a serial measurement resistance together with a pulse width modulator, the output of which is proportional to the voltage across the resistance

摘要

Circuit arrangement for measuring the current through a load (Last) has a measurement resistance (Rs) connected in series after the load and a pulse width modulator (PWM) attached to the measurement resistance that generates a pulse width modulated signal (PWout) that is dependent on the voltage (Us) across the measurement resistance.