Patent ID: 8415893

Claim:
A load control device comprising: an inverter circuit equipped with switching elements for driving a load; a first conversion device which converts analogue current value passing through the on-state switching element into digital amount corresponding to a current sampling frequency; a predicting device which predicts timing that a value of current passing through the switching element reaches a peak, under a difference between the digital amount converted according to a prescribed timing by the first conversion device and a digital amount of a timing is below a prescribed threshold; a switch selection circuit which turns off the switching elements at the predicted timing by the prediction device driven with a frequency higher than the sampling frequency for the first conversion device, and turns on the switching element which was under off-state; a second conversion device which converts an amount of electricity from the load into a digital amount; and a correction device which detects a peak value of electricity coming from the load by a digital amount converted by the second conversion device and based on this detected peak value, corrects prediction of timing.