def METHOD_NAME(self):
    """
    Retrieves present electric current supplied by PSU
    Returns:
        A float number, electric current in amperes,
        e.g. 15.4
    """
    curr_reading = self._get_dps_register(self.psu_current_reg)
    try:
        current = int(curr_reading)/1000
    except Exception:
        return None
    return "{:.1f}".format(current)