POWER SUPPLY CIRCUIT, MOTOR DRIVE CIRCUIT EQUIPPED WITH SAME, AND REFRIGERATION APPLIANCE EQUIPPED WITH POWER SUPPLY CIRCUIT OR MOTOR DRIVE CIRCUIT

摘要

In order to prevent destruction of components induced by an inrush current, this power supply circuit (20) is configured such that even when a heat source-side microcomputer (42) is booted up while a capacitor (22) is not fully charged, a main relay (87) is not turned ON and no electricity is supplied through a power-supply line. As a result, initiation of charging of the capacitor (22) without having a current limitation applied thereto is prevented, and thereby destruction of components due to an inrush current is prevented.