Patent ID: 6947239

Claim:
A magnetic storage device that records information on a recording medium by applying recording current to a magnetic head provided at a bridging part of an “H-bridge” circuit formed between a first power source and a second power source, the magnetic storage device comprising: a current source provided at each corresponding one of the four sides of the “H-bridge” circuit, the current sources outputting current flowing from the first power source toward the second power source, the current sources forming two pairs of current sources, one of the pairs of current sources being switched on when the other pair of current sources is switched off, and being switched off when the other pair is switched on, so that the recording current flows into the bridging part only in one direction at a time; and a series circuit including a capacitor and a resistor provided between the ground and a connection point of the bridging part and the four sides of the “H-bridge” circuit, each said connecting point being provided with a separate one of said series circuits.